Goodyear Belts

7/27/2019 Goodyear Belts

1/44

P O W E R T R A N S M I S S I O N P R O D U C T S

INSTALLATION, MAINTENANCEANDTROUBLESHOOTING GUIDE

POWER TRANSMISSION BELT DRIVE SYSTEM


2/44

DO NOT USE THE PRODUCTS IN THIS GUIDE IN AIRCRAFT APPLICATIONS.THE PRODUCTS IN THIS GUIDE ARE NOT INTENDED FOR USE INAIRCRAFT APPLICATIONS.

DO NOT USE THE PRODUCTS IN THIS GUIDE IN LIFT OR BRAKE SYSTEMSWHICH DO NOT HAVE AN INDEPENDENT SAFETY BACKUP SYSTEM. THEPRODUCTS IN THIS GUIDE ARE NOT INTENDED FOR USE IN LIFT ORBRAKE SYSTEMS WHICH DO NOT HAVE AN INDEPENDENT SAFETY

BACKUP SYSTEM.

FAILURE TO FOLLOW THESE WARNINGS AND THE PROPER PROCEDURESFOR SELECTION, INSTALLATION, CARE, MAINTENANCE AND STORAGE OFBELTS MAY RESULT IN THE BELTS FAILURE TO PERFORM PROPERLYAND MAY RESULT IN DAMAGE TO PROPERTY AND/OR SERIOUS INJURYOR DEATH.

The products in this Guide have been tested under controlled laboratoryconditions to meet specific test criteria. These tests are not intended to reflectperformance of the product or any other material in any specific application,but are intended to provide the user with application guidelines. The productsare intended for use by knowledgeable persons having the technical skillsnecessary to evaluate their suitability for specific applications. Goodyearassumes no responsibility for the accuracy of this information under variedconditions found in field use. The user has responsibility for exercising care inthe use of these products.

WARNING


3/44

IN STALLATIO N G U IDE

Troubleshootingof Synchronous Belt Systems

Contents

INSTALLATION

V-BELTS

V-Belts ..............................................................4

BANDED BELTS

Torque Team V-Belts .........................................13Poly-V Belts .....................................................20

SPECIALTY BELTS

Variable Speed Belts .........................................26

SYNCHRONOUS BELTSSynchronous Belts ............................................28

MAINTENANCE

What To Look For ..............................................35What To Listen For ............................................36

TROUBLESHOOTING

V-Belt Performance Analysis ...............................37V-Belt Troubleshooting Chart ..............................39Synchronous Troubleshooting Chart ....................40

Poly-V and Torque Team are registered trademarks of The Goodyear Tire and Rubber Company


4/444

V-BeltINSTALLATIO N GU IDE

3TANDARD'ROOVE$IMENSIONS $RIVE$ESIGN&ACTORS

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COMBINATION

a

GrooveAngle

File Break AllSharp C orners

Standard Groove Dimensions

Sg S e

h g

R B

d B

b g

Outside

Diameter

Datum

Diameter

Industry Standard Groove Dimensionsfor V-Belt Sheaves

Check sheaves for cleanliness, damage and wear each time belt

maintenance is performed and whenever belts are changed. The

inspection procedure is described on page 6 of this Guide.

U se the tables (Tables 1 and 2) and tolerance data below

as a reference to determine if excessive sheave wear has

occurred. They can also aid in replacement belt cross-section

selection, if necessary.

The tables are based on industry standard dimensions for V-beltsheaves. Always check the original sheave specifications if

possible. Variances from industry standards can occur to provide

for special design or performance requirements.

(1) Diameters shown for combination grooves are outside diameters.A specific datum diameter does not exist for either A or B belts in

combination grooves.

(2) The a values shown for the A/B combination sheaves are thegeometrically derived values. T hese values may be different than

those shown in manufacturers catalogs.

Summation of the deviations from Sg for all grooves in any one

sheave shall not exceed 0.050 inches.

The variation in datum diameter between the grooves in any one

sheave must be within the following limits:

U p through 19.9 inches outside diameter and up through 6 grooves:

0.010 i nches (add 0. 0005 inches for each additional groove.)

20.0 inches and over on outside diameter and up through 10

grooves: 0.015 inches (add 0.0005 inches for each additional groove.)

This variation can be obtained easily by measuring the distance across

two measuring balls or rods placed diametrically opposite each other

in a groove. Comparing this diameter over balls or rods measurement

between grooves will give the variation in datum diameter.

Deep groove sheaves are intended for drives with belt offset such as

quarter-turn or vertical shaft drives. (See RM A Power Transmission B elt

Technical Information B ulletin IP -3 -10, V-belt drives with twist) .

Joined belts will not operate in deep groove sheaves.

Also, A andAX joined belts will not operate in A /AX and B /BX combination grooves.

OTHER SHEAVE TOLERANCES

Outside DiameterU p through 8.0 inches

outside diameter.....0.020 inches

For each additional inch of outside

diameter add.....0.005 inches

Radial Runout**U p through 10.0 inches




Axial Runout**U p through 5.0 inches




**Total Indicator Reading

TABLE 1 GROOVE DIMENSIONS INCHES

Face Width of Standard

and D eep Groove Sheaves

Face Width = Sg (N g 1) + 2 Se

Where:

Ng= Number of G rooves


5/44

V-BeltIN STALLATIO N GU IDE

CrossSection

Standard GrooveO u t sid e D iam et e r

G ro o veAngle

0.25D e g r e e s

bg

0.005

b e

Ref.

hg

m in

RB

m in

dB

0.0005

Sg

0.015Se

Min imumR e c o m m e n d e d

O utsideD i a m e t e r 2a

CrossSection

Standard GrooveO u t si d e D i am et e r

G ro o ve

Angle0.25

D e g r e e s

bg

0.005

b e

Ref.

hg

m in

RB

m in

d B

0.0005

Sg

0.015Se

Min imum

R e c o m m e n d e dOutside

D i a m e t e r 2a 2he

Standa rd Groove Dime nsions Design Fac tors

Dee p G ro o ve D ime n sio n s De sign Fa ctors

3V

5V

8V

3V

5V

8V

Up Through 3.49

Over 3.49 To And

Including 6.00

Over 6.00 To And

Including 12.00

Over 12.00

Up Through 9.99

Over 9.99 To And

Including 16.00

Over 16.00

Up Through 15.99

Over 15.99 To And

Including 22.40

Over 22.40

Up Through 3.71

Over 3.71 To And

Including 6.22

Over 6.22 To And

Including 12.22

Over 12.22

Up Through 10.31

Over 10.31 To And

Including 16.32

Over 16.32

Up Through 16.51

Over 16.51 To And

Including 22.92

Over 22.92

36

38

40

42

38

40

42

38

40

42

36

38

40

42

38

40

42

38

40

42

0.350

0.600

1.000

0.350

0.600

1.000

0.340

0.590

1.990

0.181

0.183

0.186

0.188

0.329

0.332

0.336

0.575

0.580

0.585

0.3438

0.5938

1.0000

0.406

0.688

1.125

0.344

+0.094

-0.031

0.500

+0.125

-0.047

0.750

+0.250

-0.062

2.65

7.10

12.50

0

0

0

0.421

0.425

0.429

0.434

0.710

0.716

0.723

1.180

1.191

1.201

0.350

0.600

1.000

0.449

0.750

1.262

0.070

0.073

0.076

0.078

0.168

0.172

0.175

0.312

0.316

0.321

0.3438

0.5938

1.000

0.500

0.812

1.312

0.375

+0.094

-0.031

0.562

+0.125

-0.047

0.844

+0.250

-0.062

2.87

7.42

13.02

0.050

0.100

0.200

0.218

0.320

0.524

GrooveAngle

EffectiveandOutside

Diameter

Pitch

Diameter

a

File Break AllSharp

Corners

SgSe

hg

R B

dB

b e

b g

hg R B

Se Sg

dB

GrooveAngle

File Break AllSharp

Corners

b e

b g

a

h e

Effective

Diameter

Pitch

Diameter

Outside

Diameter

Deep Groove DimensionsStandard Groove Dimensions

Summation of the deviations from Sg for all grooves in any one sheaveshall not exceed 0. 031 inch. The variations in pitch diam eter between

the grooves in any one sheave must be within the following limits:

U p through 19.9 inches outside diameter and up through 6 grooves

0.010 inches (Add 0.0005 inches for each additional groove.)

20.0 inches and over on outside diameter and up through 10 grooves

0.015 i nches (add 0. 0005 inches for each additional groove.)

This variation can easily be obtained by measuring the distance across

two measuring balls or rods placed in the grooves diametrically opposite

each other. Comparing this diameter over balls or rods measurement

between grooves will give the variation in pitch diameter.

Deep groove sheaves are intended for drives with belt offset such

as quarter-turn or vertical shaft drives. ( See Power Transmission B elt

Technical Information Bulletin IP -3-10) They may also be necessary where

oscillations in the center distance may occur. Joined belts will not operate

in deep groove sheaves.

OTHER SHEAVE TOLERANCESOutside DiameterU p through 8.0 inches outside diameter... .. 0.020 inches

For each additional inch of outside diameter add.....0.005 inches

Radial Runout**U p through 10.0 inches outside diameter.. .. .0.010 inches


Axial Runout**U p through 5.0 inches outside diameter... .. 0.005 inches


**Total Indicator Reading

Industry Standard Groove Dimensions for Hy-T Wedge Belt Drives

Face Width of Standard

and D eep Groove Sheaves

Face Width = Sg (N g 1) + 2 SeWhere:Ng= Number of Grooves

TABLE 2 GROOVE DIMENSIONS INCHES


6/446


INSPECT SHEAVES

The following sections outline installation procedures that will

ensure maximum li fe and performance for your Goodyear V-belts.

Check sheaves for cleanliness, damage, and wear whether you

are replacing an existing belt, performing routine maintenance, or

installing a new drive.

Sheave Groove Gauge

PO

13.0t

o1

7.0

36

PO

Over17.0

38

PO12.0 to 12.99

34

StandardD

Sect ion

LIKE THIS N O T THIS

An alternative method for checking for sheave groove wear is to

place a new belt in the sheave groove. Note that the top of the belt

should be flush with or slightly above the outer diameter of the

sheave. R emember that if the belt top is below the sheaves outer

diameter, the groove is worn.

Perform further inspection if possible. Use the Groove Dimension

tables located on pages 4 and 5 of this manual to determine if

excessive wear has occurred or to select replacement belts and

sheave cross sections.

INSTALL HARDWARE

Always remember to select the correct sheave. T hen, after you

make the correct selection, be sure to install the sheaves correctly

B efore performi ng any installation, follow correct lockou

procedures to prevent any accidents.

IMPORTANT: Disconnect power supply to machine before doing

AN Y work.

QD Bushing

I f the sheaves are made with a Q D hub, follow these installation

and removal instructions.

HOW TOINSTALL A SHEAVE WITH A QDHUB

Insert the bushing in the hub and line up bolt holes.

Insert the pull-up bolts and turn unti l finger tight.

H old the loosely assembled uni t so the bushing flangepoints toward the shaft bearings. R everse mounting the QD

bushing can be advantageous for some applications.

Slip the unit onto the shaft and align the hub in the desired position.

Tighten the setscrew in the flange only enough to hold the assembly

in position.

Tighten each pull-up bolt alternately and evenly.

Recheck alignment and completely tighten the setscrew on the shaft

U se a stiff brush to remove rust and dirt. U se a soft cloth to wipe

off oil and grease. Select the proper sheave groove gauge and

template for the sheave diameter. Insert the gauge in the groove

and look for voids that indicate dishing or other uneven and

abnormal wear.

Thru Holes

Pull-Up Bolts

Flange

TappedHoles

Setscrew

Key

ShaftQ D BUSHING (C onve ntiona l M ount)

Sheave Hub

*QD is a registered Trademark of Emerson P ower Transmission M anufacturing, L. P.

WARNINGDisconnect power supply to the machine before removing

or installing sheaves or belts.

WARNINGDo not reinstall damaged or worn sheaves on equipment.


7/44


Split Taper Bushing

I f the sheaves are made for split taper bushings, follow these

installation and removal instructions.

HOW TOINSTALL SPLIT TAPER BUSHING SHEAVES

P ut the bushing loosely in the sheave and start the capscrews.

Place the assembly on the shaft. A lign both edges of the sheave with

the edges of its mating sheave ( i.e. the sheave on the driven shaft) .

Tighten the capscrews according to the instructions furnished withthe bushings.

HOW TOREMOVE SPLIT TAPER BUSHING SHEAVES

Remove all capscrews.

Put two of the capscrews in the tapped holes in the flange of the

bushing.

Turn the bolts alternately and evenly until the sheave has loosened.

Remove the sheave/flange assembly from the shaft.

Taper-Lock Bushing

HOW TOINSTALL A SHEAVE MADEWITH A TAPER-LOCK HUB

Look at the bushing and the hub. Each has a set of half-holes. T he

threaded holes in the hub are the mates to the non-threaded holes

in the bushing.

Insert the bushing in the hub and slide it onto the shaft. Align a

threaded hub hole with non-threaded bushing hole.

Start the setscrews into the holes that are threaded in the hub only

Do not tighten the setscrews yet.

Align both edges of the sheave with the edges of its mating sheave.

Tighten the screws alternately and evenly. T his procedure wil

wedge the bushing inward and cause it to contract evenly and grip

the shaft.

HOW TOREMOVE A SHEAVE MADEWITH A TAPER-LOCK HUB

Remove all the setscrews.

P lace two of the setscrews in the holes that are threaded in the

bushing only.

Turn the setscrews alternately and evenly. This movement wil

unlock the grip and permit easy removal of the assembly with no

shock to the bearings or machinery.

Non-Threaded Hub Hole

Threaded Bushing Hole(Used to remove sheave)

Bushing

Setscrews

*Taper-Lock: TM Reliance Electric Company

Sheave Hub

HOW TOREMOVE A SHEAVE WITH A QD HUB

P lace two of the pull-up bolts in the tapped holes in the sheave.

Turn the bolts alternately and evenly. They will push against the

bushing flange and act as jackscrews to break the grip between the

bushing and the hub.

Thru Holes

Capscrews

Bushing

Flange

Sheave

Tapped

Holes


8/448


CHECK ALIGNMENT

Proper alignment is essential for long V-belt life. Check belt

alignment whenever you maintain or replace belts or whenever you

remove or install sheaves.

The illustration above shows the correct way to check alignment

between two sheaves with a straight edge. Check both front and

back alignment. Straight edge should touch sheaves at the four

points indicated.

N on-parallel shafts or sheaves not aligned axially can cause

angular misalignment.

Laser Alignment Tool

Goodyears Laser Alignment Tool provides an alternative to checking

alignment with a straight edge. Each laser alignment tool comes

with a rugged carrying case and detailed instructions to get you

started with the quickest, easiest, and most versatile alignment tool

on the market today.

IDENTIFY CORRECT BELT

Always select belts to match sheave grooves. Use a sheave groove

gauge to determine the proper belt cross section. (Fig. A) .

U se a belt gauge to verify the old belt cross section when bel

identification is no longer legible. ( Fig. B) .

MATCHING BELTS

When using multiple grooved sheaves, be sure that all of the beltsare the same brand. Always replace complete sets of V-Belts even

if only one is worn or damaged.

HOW TOINSTALL BELTS

After you correctly install and align the sheaves, you can instal

the belts.

Always move the drive unit so you can easily slip the belts into

the grooves without force.

(Fig. A) . (Fig. B) .

1


9/44


Never force belts into a sheave with a tool such as a screwdr iver

or a wedge. D oing so may rupture the envelop fabric or break

the cords.

Refer to Tables 3 and 4 to determine if enough clearance exists

for belt installation and tak e-up.

For example, i f you are installing a B 75 H y-T plus belt, the

minimum allowable center distance for installation is 1.25 inches.

For belt take-up, the minimum allowance above center to maintain

tension is 2 inches.

M inim um A l low a nce BelowStand ard Ce nter Distanc e for Instal lat ion o f Belts

Up to and Incl. 35

Over 35 to and Inc l. 55


Over 300 to and Incl. 390

Over 390




M inum um A l low anceA b o v e St a n d a r d C e n te r

Distanc e for Ma intaining Tension

All Cross SectionsStandard

Le ng th De sig na tio n A B

BTorqueTea m C

CTorqueTeam D

DTorqueTeam E




0.75

0.75

0.75

1.00

1.00

1.25

1.50

1.50

1.60

1.50

1.50

2.00

2.00

1.00

1.00

1.25

1.25

1.25

1.60

1.80

1.80

1.50

1.50

2.00

2.00

2.10

2.20

2.00

2.00

2.90

3.00 2.50

1.50

1.50

1.50

1.90

2.00

2.20

2.00

2.00

2.00

2.30

2.50

2.50

2.00

2.50

2.50

3.20

3.20

3.50

2.50

2.50

3.00

2.00

2.50

2.70

2.90

2.60

3.00

3.60

4.10

3.00

3.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

6.00

1.5% of belt length

Table 3 Hy-T Plus V-Belts

M inim um A l low a nce Below S tanda rd C enter D istancefor Installa tion of Be lts, Inche s

Up to and Incl. 475

Over 475 to a nd Inc l. 710





M i n u m u m A ll o w a n c eA bove Standa rd C enter D istance

for Maintaining Tension, Inch esAll Cross Sections

StandardLeng th Designation 3V

3VTorqueTeam




0.5

0.8

0.8

1.2

1.4

1.4

1.0

1.0

2.1

2.1 1.5

0.8

0.8

1.4

1.4

1.0

1.0

1.0

2.1

2.1

2.1

1.5

1.5

1.8

1.2

1.2

1.2

2.4

2.4

2.4

1.8

1.8

1.8

1.0

1.2

1.5

1.8

2.2

2.5

3.0

3.2

3.5




1.2 2.4 2.0

2.0

2.0

4.0

4.5

5.5

5V

5VTorqueTeam 8V

8VTorqueTeam

3.4

3.4

3.4

3.6

3.6

3.6

3.6

4.0

4.0

4.0

Table 4 Hy-T Wedge V-Belts

3HORTER#ENTER$ISTANCEFOR6BELTINSTALLATION

,ONGER#ENTER$ISTANCEFOR6BELT4AKE5P


10/4410


Tensioning Methods

When you install belts at optimal tension, you save time and money

To i llustrate this point, this table compares the cost and accuracy o

various V-belt tensioning methods.

Choose one of three tensioning methods for V-Belts:

TensionRite

Two TensionR ite gauges are available: one for single belt drives

and another for banded belt drives.

For more detailed instructions for using TensionR ite, refer to the

instructions attached to gauge.

100%

80%

60%

40%

20%

0%

$1,500

$1,200

$900

$600

$300

$0

64%

90%

99%93%

$1,200

$80

Averag e % Ac curac y and Co st of Tensioning Devices

PERCENTACCURACY

CO

ST

Thumb test Plunger Frequency

Tester

TensionRite

Percent Accuracy Cost ($)

$0 $0

TENSION

Proper tension is essential for maximum belt life and efficiency.

Improper belt tension is the primary cause of premature

belt failure and increased costs. U nder-tensioned belts lead to

slippage, overheating, rollover and noise, all of which lead to

higher maintenance costs and inefficient transmission of power.

Also, over tensioning belts leads to premature wear, along with

bearing, shaft, and sheave problems. T he result is more frequent

replacement of drive components and costly downtime.

Common Sense Rules of VBelt Tensioning

The ideal tension is the lowest tension at which the belt will not slip

under peak load conditions.

Check the belt tension frequently during the first 24-48 hours of

run-in operation.

Do not over tension belts. Doing so will shorten belt and bearing life.

K eep belts free from foreign materials that may cause slippage.

Inspect the V-drive periodically. Re-tension the belts if they

are slipping.M aintain sheave alignment with a strong straight-edge tool while

tensioning V-belts.


11/44


TensionRite Belt Frequency Meter

The TensionR ite B elt Frequency M eter belt tensioning device

measures actual belt tension or frequency and works with all

industrial transmission belts including V-belts, synchronous belts,

and Poly-V belts.

Details about the TensionR ite B elt Frequency M eter can be

found on the web at www.goodyearindustrialproducts.com. O rcontact your local Goodyear authorized distributor.

Deflection Principle

Plunger-type gauges utilize the deflection principle to check the

tension of a belt drive.

Compare the actual deflection force with the values in Tables 5

and 6. A force below the target value indicates under-tension

A force above the target indicates over-tension.

The gauge deflects the center of the belt span and the force of this

deflection is compared to a target deflection force for the particular

span. T hen, one can adjust the belt tension unti l the actual

deflection force equals the target.

Deflection1/64 per

inch of span

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668

6

Table 5

Table 6

M easure the span length.

M ark the center of the span. At the center mark , use a tension

tester and apply a force perpendicular to the span large enough to

deflect the belt 1/64" for every inch of span length (Ex: a 100" span

requires a deflection of 100/64" or 1 9/16") .


12/44

V-BeltIN STALLATIO N G U IDE

12

The following few sections detail other issues that could ariseduring V-belt drive installation.

BELT GUARDS

V-belt drive guards ensure cleanliness and safety. Screened,

meshed, or grilled guards are preferable because they allow for

air circulation and heat escape.

IDLERS

Avoid the use of idlers if at all possible. A properly designed V-belt

drive will not require an idler to deliver fully rated horsepower.

Idlers put an additional bending stress point on belts, which

reduces a belts horsepower rating and i ts life. Also, remember the

smaller the idler, the greater the stress and the shorter a belts life.

However, if the drive design requires an idler, observe the following

design recommendations.

Inside Idler

A V-grooved idler located on the inside of the belts on the slack side

of the drive is preferable to a back side idler. Locate the idler near

the large sheave to avoid reduction of the arc of contact with

the small sheave. N ote that the size of the V-idler pulley should beequal to or larger (preferably) than the diameter of the small sheave.

4

5

Back Side Idler

A back side idler increases the arc of contact on both sheaves

However, such an idler also forces a backward bend in the V-bel

which contributes to unwanted wear such as bottom cracking

and premature failure. If a back side idler is the only option, follow

two guidelines: ( 1) mak e sure the diameter of the flat idler pulle

is at least 1.5 times the diameter of the small sheave and (2

locate the back side idler as close as possible to the small sheave o

the slack side.

Kiss Idler

Unlik e the back side idler, the kiss idler does not penetrate the be

span and create a back bend. Consequently, the kiss idler does no

contribute to premature failure. T he kiss idler can help control be

vibration and whip on drives subject to shock and pulsating loads

When using a k iss idler, make sure the diameter of the flat pulley is a

least 1.5 times the diameter of the small sheave on the slack side.


13/44

INSTALLATIO N G UI DE

Torque Team V-Belt

INSPECT SHEAVES

The following sections outline installation procedures that will en-

sure maximum life and performance for your Goodyear Torque

Team V-Belts.




Sheave Groove Gauge

PO

13.0t

o1

7.0

36

PO

Over17.0

38

PO12.0 to 12.99

34

Standard

DSect ion

U se a stiff brush to remove rust and dirt. U se a soft cloth to wipe

off oil and grease. Select the proper sheave groove gauge and

template for the sheave diameter. Insert the gauge in the groove

and look for voids that indicate dishing or other uneven and

abnormal wear.

INSTALL HARDWARE

Always remember to select the correct sheave. Then, after you

make the correct selection, be sure to install the sheaves correctly

Before performing any installation, follow correct lockou

procedures to prevent any accidents.


AN Y work.

QD Bushing



HOW TOINSTALL A SHEAVE WITH A QD HUB


Insert the pull-up bolts and turn unti l finger tight.

Hold the loosely assembled unit so the bushing flange points

toward the shaft bearings. Reverse mounting the QD

bushing can

be advantageous for some applications.

Slip the unit onto the shaft and align the hub in the desired position


in position.


R echeck ali gnment and completely tighten the setscrew on

the shaft.

Thru Holes

Pull-Up Bolts

Flange

TappedHoles

Setscrew

Key

ShaftQ D BUSHING ( Co nventional M ount)

Sheave Hub

*QD is a registered Trademark of Em erson Power Transmission M anufacturing, L. P.





14/4414

Torque Team V-BeltINSTALLATIO N G U IDE

Split Taper Bushing

If the sheaves are made for split taper bushings, follow these



Put the bushing loosely in the sheave and start the capscrews.

Place the assembly on the shaft. A lign both edges of the sheave with

the edges of its mating sheave ( i. e. the sheave on the driven shaft) .

Tighten the capscrews according to the instructions furnished withthe bushings.



P ut two of the capscrews in the tapped holes in the flange of

the bushing.

Turn the bolts alternately and evenly until the sheave has loosened.


Taper-Lock Bushing




in the bushing.



Start the setscrews into the holes that are threaded in the hub only


Align both edges of the sheave with the edges of its matingsheave.

Tighten the screws alternately and evenly. T his procedure wil


the shaft.



P lace two of the setscrews in the holes that are threaded in the

bushing only.

Turn the setscrews alternately and evenly. T his movement wil

unlock the grip and permit easy removal of the assembly with noshock to the bearings or machinery.

Non-Threaded Hub Hole

Threaded Bushing Hole(Used to remove sheave)

Bushing

Setscrews

*Taper-Lock: TM Reliance Electric Company

Sheave Hub

Thru Holes

Capscrews

Bushing

Flange

Sheave

Tapped

Holes



Turn the bolts alternately and evenly. T hey will push against the




15/44

INSTALLATIO N G U IDE

Torque Team V-Belt

CHECK ALIGNMENT

Proper alignment is essential for long Torque Team V-Belt life.

Check belt alignment whenever you maintain or replace belts or

whenever you remove or install sheaves.

The illustration above shows the correct way to check alignment


back alignment. Straight edge should touch sheaves at the four

points indicated.

N on-parallel shafts or sheaves not aligned axially can cause



Goodyears Laser Alignment Tool provides an alternative to checking

alignment with a straight edge. Each laser alignment tool comes

with a rugged carrying case and detailed instructions to get you

started with the quickest, easiest, and most versatile alignment tool

on the market today.


Always select belts to match sheave grooves. Use a sheave groove

gauge to determine the proper belt cross section (Fig. A ) . M ake

sure that the space between the grooves in the sheaves matches

the spacing between belt ribs. Do not use Torque Team belts in

deep groove sheaves; such sheaves could cut through the back ing

that holds the ribs together.U se a belt gauge to verify the old belt cross section when bel

identification is no longer legible (Fig. B ) .

(Fig. A). (Fig. B) .

MATCHING BELTS

Banded Torque Team V-belts eliminate belt whip and turnove

problems experienced with multiple V-belt sets under certain drive

conditions. The individual ribs in the Torque Team Belts are

produced at the same time and bonded together. T hus, ordering

matched sets of individual V- belts is unnecessary.

U sing more than one set of Torque Team belts on the same drive

is possible. For example, 2/5V1250 and 3/5V1250 Torque Team

belts will transmit the same power as five individual 5V1250

V-belts. T he 2/5V1250 identifi cation describes a Torque Team bel

with two 5V1250 individual V-belts joined together.

Dont M ix Belt Brands.

DO NOT use sets from different manufacturers together as they

may have different performance characteristics.

Dont M ix N ew and Used Belts.

Like single V-belts, DO NOT use new and used Torque Team belt

in combined sets.

Dont use Torque Team Plus belts in combined sets unless they are

matched by the factory.

1


16/4416


HOW TOINSTALL TORQUE TEAM BELTS

Never force Torque Team belts into a sheave. Instead, decrease

the center distance between the sheaves, allowing the belt to slip

easily into the sheave grooves.

To tension a newly installed Torque Team belt, increase the

center distance between the sheaves. Tables 7 and 8 detail center

distance allowances for installation and tensioning of Classical andHY-T Wedge Torque Team belts. For example, a 5/5V1250 Torque

Team belt requires decreasing the center distance 2.1 inches to

install the belt and increasing the center distance 1.8 inches to

maintain sufficient tension.

M inim um A l low a nce BelowStand ard Ce nter Distanc e for Insta l lat ion of Belts

Up to and Incl. 35




Over 390




M inum um A l low anceA b o v e St a n d a r d C e n t e r

Distanc e for M aintaining Tension

All Cross Sec tionsStandard

Le ng th De sig na tio n A B

BTorqueTea m C

CTorqueTeam D

DTorqueTeam E




0.75

0.75

0.75

1.00

1.00

1.25

1.50

1.50

1.60

1.50

1.50

2.00

2.00

1.00

1.00

1.25

1.25

1.25

1.60

1.80

1.80

1.50

1.50

2.00

2.00

2.10

2.20

2.00

2.00

2.90

3.00 2.50

1.50

1.50

1.50

1.90

2.00

2.20

2.00

2.00

2.00

2.30

2.50

2.50

2.00

2.50

2.50

3.20

3.20

3.50

2.50

2.50

3.00

2.00

2.50

2.70

2.90

2.60

3.00

3.60

4.10

3.00

3.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

6.00

1.5% of belt length

Table 7 Hy-T Plus V-Belts

M inim um A l low a nce Below S tand ard C enter D istancefor Installation of Belts, Inches

Up to and Incl. 475






M inum um A l low anceA bove Standa rd C enter D istance

for Maintaining Tension, Inche sAll Cross Sections

StandardLeng th Designation 3V

3VTorqueTeam


Over 2360 to and Incl. 2650Over 2650 to and Incl. 3000

0.5

0.8

0.8

1.2

1.4

1.4

1.0

1.0

2.1

2.1 1.5

0.8

0.8

1.4

1.4

1.0

1.0

1.0

2.1

2.1

2.1

1.5

1.5

1.8

1.2

1.21.2

2.4

2.42.4

1.8

1.81.8

1.0

1.2

1.5

1.8

2.2

2.5

3.0

3.23.5




1.2 2.4 2.0

2.0

2.0

4.0

4.5

5.5

5V

5VTorqueTeam 8V

8VTorqueTeam

3.4

3.4

3.4

3.6

3.6

3.63.6

4.0

4.0

4.0

Table 8 Hy-T Wedge V-Belts

3HORTER#ENTER$ISTANCEFOR6BELTINSTALLATION

,ONGER#ENTER$ISTANCEFOR6BELT4AKE5P


17/44


Torque Team V-Belt

TENSION


Improper belt tension is the primary cause of premature belt failure

and i ncreased costs. U nder-tensioned belts lead to slippage,

overheating, and noise, all of which lead to higher maintenance

costs and inefficient transmission of power. A lso, over tensioning

belts leads to premature wear, along with bearing, shaft, and sheaveproblems. The result is more frequent replacement of drive components

and costly downtime.

Common Sense Rules of Torque TeambeltTensioning




run-in operation.

Do not over tension belts. Doing so will shorten belt and bearing life.

K eep belts free from foreign materials that may cause slippage.

Inspect the Torque Team drive periodically. Re-tension the belts ifthey are slipping.

M aintain sheave alignment with a strong straight-edge tool while

tensioning Torque Team belts.

Tensioning Methods

When you install belts at optimal tension, you save time and money.

To illustrate this point, the figure below compares the cost and

accuracy of various V-belt drive tensioning methods.

100%

80%

60%

40%

20%

0%

$1,500

$1,200

$900

$600

$300

$0

64%

90%

99%93%

$1,200

$80

Averag e % Ac curac y and C ost of Tensioning Devices

PERCENTACCURACY

CO

ST

Thumb test Plunger Frequency

Tester

TensionRite

Percent Accuracy Cost ($)

$0 $0


T he TensionR ite B elt Frequency M eter belt tensioning device

measures actual belt tension or frequency and works with a

industrial transmission belts including V-belts, synchronous belts

and P oly-V belts.

Details about the TensionR ite Belt Frequency M eter can be

found on the web at www.goodyearindustrialproducts.com. Ocontact your local Goodyear authorized distributor.


Plunger-type gauges utilize the deflection principle to check th


Choose one of four tensioning methods for V-Belts:

TensionRite

Two TensionR ite gauges are available: one for single belt drives

and another for banded belt drives.

For more detailed instructions for using TensionR ite, refer to the

instructions attached to gauge.

The gauge deflects the center of the belt span and the force of thi

deflection is compared to a target deflection force for the particula

span. T hen, one can adjust the belt tension unti l the actua


1


18/4418


#ROSS3ECTION


!!8

20-2ANGE

5SED"ELT

.EW"ELT

5SED"ELT

.EW"ELT

5NCOGGED(Y4"ELTSAND5NCOGGED

(Y44ORQUE4EAM

#OGGED4ORQUE&LEX

AND-ACHINED%DGE4ORQUE4EAM"ELTS


""8

##8

$

#ROSS3ECTION


668

20-2ANGE

5SED"ELT

.EW"ELT

5SED"ELT

.EW"ELT

5NCOGGED(Y47EDGE"ELTSAND5NCOGGED(Y47EDGE4ORQUE4EAM

#OGGED(Y47EDGE"ELTS

AND(Y47EDGE-ACHINE%DGE4ORQUE4EAM


668

6

Elongation Method

When the deflection force required for the Deflection M ethod

becomes impractical for large Torque Team belts, use the

elongation method.

Imagine the Torque Team belt as a very stiff spring, where a

known amount of tension results in a known amount of elongation

The modulus of the Torque Team belt is like the spring constant o

a spring and is used to relate the elongation to the tension in thebelt. The Elongation M ethod calculates the belt length associated

with the required installation tension.

A gage length is defined and used as a point of reference for

measuring belt elongation. The gage length could be the outside

circumference of the belt or the span ( or part of the span) length

The ini tial gage length is measured with no belt tension.

The relationship between belt elongation and strand tension fo

one rib in a Torque Team B elt can be found by using the formula

below, where the M odulus Factors are given in Table 11.

Cross Sec tion

Modulus Fac tor

(lbs/in/in)

3V, 3VX

14270

5V, 5VX

25622

8V

55548

B, BX

28547

C, CX

43440

D

58882

Deflection1/64 per

inch of span

M easure the span length.

M ark the center of the span. At the center mark , use a tension

tester and apply a force perpendicular to the span large enough to

deflect the belt 1/64" for every inch of span length (Ex: a 100" span

requires a deflection of 100/64" or 1 9/16") .

Compare the actual deflection force with the values in Tables

9 and 10. A force below the target value indicates under-tension. A

force above the target indicates over-tension.

TABLE 9 - BELT DEFLECTION FORCE

TABLE 10 - BELT DEFLECTION FORCE

TABLE 11

Strand Tension per rib

M odulus Factor1 +Belt Length M ultiplier =


19/44


Torque Team V-Belt

Enter the required strand installation tension per rib into the

formula, along with the M odulus Factor that corresponds to the

cross section of the Torque Team belt, to determine the Belt Length

M ultiplier.

M ultiply the gage length by the Belt Length M ultiplier to determine

the final gage length at the installation tension.

Example:

A 5/5V1250 belt is to be installed at 1400 lbs. The M odulus Factor

is 25622 lbs/in/in from table 11. The installation force is divided by

the number of ribs in the Torque Team (1400/5 = 280 lbs) . The

Belt Length M ultiplier is calculated next.

Belt Length M ultiplier = 1 + 280/25622 = 1.0109

Outside B elt Circumference at installation tension = 1.0109 x 125

= 126.4 inches.

In other words, the belt is elongated 1.4 inches at installation tension.

These multipliers do not apply to Torque Team P lus belts.

Inside Idler

A V-grooved idler located on the inside of the belts on the slack

side of the drive is preferable to a back side idler. Locate the idle

near the large sheave to avoid reduction of the arc of contact with

the small sheave. Note that the size of the V-idler pulley should

be equal to or larger (preferably) than the diameter of the sma

sheave.

Back Side Idler

A back side idler increases the arc of contact on both sheaves

However, such an idler also forces a backward bend in the V-belt

which contributes to unwanted wear such as bottom cracking and

premature failure. If a back side idler is the only option, follow two

guidelines: (1) make sure the diameter of the flat idler pulley is

at least 1.5 times the diameter of the small sheave and (2) locate

the back side idler as close as possible to the small sheave on the

slack side.

The following few sections detail other issues that could arise

during Torque Team V-Belt drive installation.

BELT GUARDS

IDLERS

Avoid the use of idlers if at all possible. A properly designed Torque

Team V-belt drive will not require an idler to deliver fully rated

horsepower. Idlers put an additional bending stress point on

belts, which reduces a belts horsepower rating and its life. Also,

remember the smaller the idler, the greater the stress and the

shorter a belts life. H owever, if the drive design requires an idler,

observe the following design recommendations.

Kiss Idler

U nlik e the back side idler, the kiss idler does not penetrate the

belt span and create a back bend. Consequently, the kiss idler doe

not contribute to premature failure. T he kiss idler can help contro

belt vibration and whip on drives subject to shock and pulsating

loads. When using a k iss idler, mak e sure the diameter of the

flat pulley is at least 1.5 times the diameter of the small sheave on

the slack side.

V-belt drive guards ensure cleanliness and safety. Screened,

meshed, or grilled guards are preferable because they allow for aircirculation and heat escape.


20/4420

Poly-V BeltIN STALLATIO N GU IDE

Inspect Sheaves


ensure maximum life and performance for your Goodyear Poly-V belts.




M o t o rN a m e p l a t e

H orsepow er

M INIM UM RECO M M ENDED SMA LL SHEAVE DIAM ETERSFOR ELECTRIC M O TORS (FOR POLY-V & V -BELT DRIVES)

1.251.251.502.002.252.25

STAND ARD M OTOR R.P.M .

3450

.12 or less

.25

.33

.50

.751

1.52357.5

1015202530

405060

75100

125150200250300

1750 1160 870 675 57 5

2.252.502.502.503.00

3.003.754.504.50

1.251.251.502.002.252.25

2.502.502.503.003.00

3.754.504.504.505.25

6.007.007.63

9.0010.00

11.00

1.501.502.002.502.502.50

2.502.503.003.003.75

4.504.505.256.006.75

6.758.389.00

10.0013.00

13.0013.00

3.003.00

3.003.003.003.754.50

4.505.256.006.756.75

8.259.0010.00

10.0013.00

15.0018.0022.00

3.003.00

3.003.003.754.504.50

5.256.006.758.259.00

10.0010.0011.00

13.0015.00

18.0020.0022.0022.0027.00

3.003.00

3.003.754.504.505.25

6.006.758.259.0010.00

10.0011.0012.00

14.0018.00

20.0022.0022.0022.0027.00

Sm a l l Shea ve D iam eters - Inche s

MinimumSheave Diameter

If the sheave driver is a standard electric motor, refer to Table 12 to

be sure that the sheave diameter selected will meet the Nationa

Electrical M anufacturers Association Standard for minimum sheav

diameters for electric motors. If the motor sheave is smaller than

the minimum diameter shown in this table, increase the sheave

diameter so that the motor sheave will conform with the charunless either an oversize or outboard bearing is installed.

Perform further inspection if possible. U se the Groove Dimension

table below (Table 13) to determine if excessive wear has occurred

or to select replacement belts and sprocket cross sections.

Table 12

d B

r b

r t

Sg S e

a

h g

Outside

Diam

eter

Pitch

Diam

eter

Diam

eter

Ove

rBalls

CrossSect ion

Minimum

R e c o m m e n d e dOutside

D i a m e t e rI n c h e s

0.50

AngleG roov e

0.50

D e g r e e s

Sg

rt

+0.005-0.000Inc he s

a

Inc he s

rb

I nc h e s In c he s

hg

Minimum

I n c h e s

dB

0.0004

Inc he s

Se

Inc he s

H

J

K

L

M

0.80

1.50

3.00

7.00

40

40

40

40

40

0.0630.001

0.0920.001

0.1400.002

0.1850.002

0.3700.002

0.005

0.008

0.010

0.015

0.030

0.020

0.030

0.038

0.058

0.116

0.013+0.0000.005

0.015+0.0000.005

0.020+0.0000.005

0.015+0.0000.005

0.030+0.0000.010

0.041

0.071

0.122

0.183

0.377

0.0469

0.0625

0.1093

0.1406

0.2812

0.080+0.0200.010

0.125+0.0300.015

0.125+0.0500.000

0.375+0.0750.030

0.500+0.1000.040

*Summation of the deviations from Sg for all gooves in any one sheave shall not exceed 0.010 inches.

Table 13 Groove Dimensions





21/44

Poly-V BeltINSTALLATIO N G U IDE

INSTALLATION

Before performing any installation, follow correct lockout procedures

to prevent any accidents.


ANY work.

QD Bushing

If the sheaves are made with a Q D hub, follow these installation


HOW TOINSTALL A SHEAVE WITH A QD

HUB


Insert the pull-up bolts and turn until finger tight.

Hold the loosely assembled unit so the bushing flange pointstoward the shaft bearings. R everse mounting the QD bushing can

be advantageous for some applications.

Slip the unit onto the shaft and align the hub in the desired position.


in position.


Recheck alignment and completely tighten the setscrew on the shaft.






Split Taper BushingI f the sheaves are made for spli t taper bushings, follow these



P ut the bushing loosely in the sheave and start the capscrews

Place the assembly on the shaft. Align both edges of the sheave

with the edges of its mati ng sheave ( i. e. the sheave on the

driven shaft).

Tighten the capscrews according to the instructions furnished with

the bushings.




bushing.

Turn the bolts alternately and evenly until the sheave has loosened


4HRU(OLES

0ULL5P"OLTS

&LANGE

4APPED(OLES

3ETSCREW

+EY

3HAFT1$"53().'#ONVENTIONAL-OUNT

3HEAVE(UB

Thru Holes

Capscrews

Bushing

Flange

Sheave

TappedHoles

*QD is a registered Trademark of Em erson Power Transmission M anufacturing, L. P.


22/4422


CHECK ALIGNMENT

Proper alignment is essential for long Poly-V belt life. Check bel

alignment whenever you maintain or replace belts or whenever you

remove or install sheaves.

The illustration above shows the correct way to check alignmen


back alignment. Straight edge should touch sheaves at the fou

points indicated.

N on-parallel shafts or sheaves not aligned axi ally can cause



G oodyears Laser A lignment Tool provides an alternative t

checking alignment with a straight edge. Each laser alignment too

comes with a rugged carrying case and detailed instructions to ge

you started with the quickest, easiest, and most versatile alignmen

tool on the market today.

Taper-Lock Bushing




in the bushing.



Start the setscrews into the holes that are threaded in the hub only.


Align both edges of the sheave with the edges of its mating sheave.

Tighten the screws alternately and evenly. This procedure willwedge the bushing inward and cause it to contract evenly and grip

the shaft.



Place two of the setscrews in the holes that are threaded in the

bushing only.

Turn the setscrews alternately and evenly. T his movement will



4HREADED(UB(OLE5SEDTO)NSTALLSHEAVE

4HREADED"USHING(OLE5SEDTOREMOVESHEAVE

"USHING

3ETSCREWS

(UB

4APER,OCK4-2ELIANCE%LECTRIC#OMPANY


23/44



Always select belts to match sheave grooves.

SIZE DESIGNATION

BELT675 6L

6 48L

67.5 inchPitch Length

LSection

6Ribs

6Grooves

LSection

4.8Pulley Diameter

PULLEY

MATCHING BELTS

M atching multiple belts is not necessary for most Poly-V belt drives.

If you encounter a special application calling for matching, specify

matched belts on the order.

HOW TOINSTALL BELTS

After you correctly install and align the sheaves, you can install

the belts.



Never force belts into a sheave with a tool such as a screwdriver or

a wedge. Doing so may damage the ribs or break the cords.

2

Refer to table 14 to determine if enough clearance exists for be

installation and take-up.

For example, i f you are installing a 220J8, the minimum allowanc

below center distance is inch. If you are working to maintain

tension, the minimum allowance above center distance for bel

take-up is also inch.

M inim um A l low a nce BelowStandard Center Distance

for Installation of Belts, Inches

Up To and Incl. 20.0

Over 20.0 To a nd Inc l. 40.0



Over 80.0 To and Inc l. 100.0

M inum um A l low anceA bove S tandard

C enter D istance forMaintaining

Tension, inche sAll Cross Selections

Stand ard Effec tiveLe ng th , Inc he s J L M

0.4

0.5

0.6

0.6

0.7








Over 420.0 To and Inc l. 480.0Over 480.0 To and Inc l. 540.0


0.8

0.9

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.2

2.3

2.6

2.93.2

3.6

0.3

0.5

0.7

0.9

1.1

1.3

1.7

2.2

2.6

3.3

3.9

4.6

5.25.8

6.5

TENSION

Proper tension is essential for maximum belt life and efficiency


and increased costs. U nder-tensioned belts lead to slippage

overheating, and noise, all of which lead to higher maintenance

costs and inefficient transmission of power. A lso, over tensioning

belts leads to premature wear, along with bearing, shaft, and pulle

problems. T he result is more frequent replacement of driv

components and costly downtime.

Table 14 POLY -V BELT RECOMMENDEDINSTALLATION AND TAKE-UP ALLOWANCES

3

Shorter Center Distanc e for Poly-V belt installation

Longer Center Distance for Poly-V belt Take-Up


24/4424


Common Sense Rules of Poly-V Belt Tensioning




run-in operation.

Do not over tension belts. Doing so will shorten belt and bearing life.K eep belts free from foreign materials that may cause slippage.

Inspect the Poly-V drive periodically. Re-tension the belts if they are

slipping.

M aintain sheave alignment with a strong straight-edge tool while

tensioning Poly-V belts.

Tensioning Methods

Choose one of two tensioning methods for Poly-V belts:


The TensionR ite B elt Frequency M eter belt tensioning device

measures actual belt tension or frequency and works with all

industrial transmission belts including V-belts, synchronous belts,

and P oly-V belts.

Details about the TensionR ite Belt Frequency M eter can be found

on the web at www.goodyearindustrialproducts.com, or contact your

local Goodyear authorized distributor.




The gauge deflects the center of the belt span and the force of

this deflection is compared to a target deflection force for the

particular span. Then, one can adjust the belt tension until the actual


J

J

J

L

L

L

M

M

M

BeltCross Section

Small SheaveD iam eter Rang e

Force Flbs. pe r rib

1.32 1.67

1.77 2.20

2.36 2.95

2.95 3.74

3.94 4.92

5.20 6.69

7.09 8.82

9.29 11.81

12.40 15.75

0.4

0.5

0.6

1.7

2.1

2.5

6.4

7.7

8.8

Run the drive briefly to properly seat the belt. A t least one sheav

should rotate freely during the tensioning procedure.

M easure the span length. (See illustration)

M ark the center of span. At the center point, use a tension teste

and apply a force perpendicular to the span large enough to deflec

the belt 1/64" for every inch of span length. ( Ex: a 100" span

requires a deflection of 100/64" or 1 9/16")

Compare the actual deflection force with the values in Table 15

A force below the target value indicates under-tension. A forc

above the target indicates over-tension.

The following few sections detail other issues that could aris

during a Poly-V belt drive installation.

BELT GUARDS

Poly-V belt drive guards ensure cleanliness and safety. Screened

meshed, or grilled guards are preferable because they allow for ai

circulation and heat escape.

Table 15 - BELT DEFLECTION FORCE


25/44


IDLERS

Even though Poly-V belts are designed to handle idlers better than

most other power transmission belts, idlers will reduce belt life and

should be avoided. Idlers put an additional bending stress point on

the belts, which reduces the belts horsepower rating and its life.

The smaller the idler, the greater this stress and the shorter the

belts life. I f the drive design requires an idler, observe the followingdesign recommendations.

Inside IdlerA V-grooved idler located on the inside of the belts on the slack

side of the drive is preferable to a back side idler. Locate the idler

near the large sheave to avoid reduction of the arc of contact with

the small sheave. Note that the size of the V-idler pulley should

be equal to or larger (preferably) than the diameter of the small

sheave.

Back Side Idler

A back side idler increases the arc of contact on both sheaves.

However, such an idler also forces a backward bend in the P oly-V

belt, which contributes to unwanted wear such as rib cracking and

premature failure. If a back side idler is the only option, follow two

guidelines: ( 1) mak e sure the diameter of the flat idler pulley is at

least 1.5 times the diameter of the small sheave and ( 2) locate the

back side idler as close as possible to the small sheave.

Kiss Idler

U nlik e the back side idler, the k iss idler does not penetrate the bel

span and create a back bend. Consequently, the kiss idler does no

contribute to premature failure. The kiss idler can help control bel

vibration and whip on drives subject to shock and pulsating loads

When using a kiss idler, mak e sure the diameter of the flat pulley is

at least 1.5 times the diameter of the small sheave.


26/4426

Variable SpeedIN STALLATIO N GU IDE

INSPECT SHEAVES


ensure maximum life and performance for your Goodyear Variable

Speed belts.




Worn sidewalls also interfere with the shifting action. N icks or

gouges can cut the belt. Dirt on the belt and in the grooves can

abrade the belt and oil can attack the belt materials. Use a stiff

brush to clean off rust and dirt. Wipe off any oil and grease. Worn

moving parts cause vibration and reduce belt life.

.

CHECK ALIGNMENT

Proper alignment is more critical for Variable Speed Drive sheaves

than for conventional V-belt drives. Check belt alignment wheneve

you maintain or replace belts or whenever you remove or instal

sheaves.

T his illustration ( Fi g A) , shows the correct way to check

alignment between two variable speed sheaves.A nother illustration ( Fi g B) , shows a belt mi saligned. To

correct the alignment, move one sheave so that the straight edge is

equidistant from both sides of the narrow sheave. The belt edges

should also be equidistant from the straight edge.

RIGHT - The belt is parallelto the straight edge

Fig B


To select the correct belt, refer to the drive manufacturers

recommendations. T he belt length is most critical on fixed cente

drives with both pulleys variable since accurate length is required

to achieve precise drive speed variations. Belt length with one

variable and one fixed pulley is also critical as it affects the

allowable increase and decrease in center distances.

Types of Variable Speed Drives

Both Sheaves Variable

Variable to Fixed Sheave





27/44

Variable SpeedINSTALLATIO N G UI DE

HOW TOINSTALL BELTS

Take special care during the installation of variable speed belts to

avoid damage to the belts and sheaves. You may have to open

variator sheaves fully to facilitate installation. You may also have to

shorten the drive center distance to allow for easy installation. You

may have to remove sheaves, as well. A fter assembly, return the

drive center distance to normal and recheck drive alignment.

TENSION

Spring loaded sheaves, which apply the tension required to handle

the design load, govern variable speed belt tensioning.

BELT GUARDS

Belt guards ensure cleanliness and safety. Screened, meshed, or

grilled guards are preferable because they allow for air circulation

and heat escape. Note: R efer to www.osha.org.

IDLERS

Idlers are not recommended for variable speed drives.


28/44

Synchronous BeltsIN STALLATIO N G U IDE

28

INSPECT SPROCKETS

The following sections outline installation procedures that

will ensure maximum life and performance for your

Goodyear synchronous belts such as H awk Pd, Falcon Pd,

and Eagle Pd belts.

Worn teeth will cause belt wear and/or damage. N icks or gouges

can cut the belt. Dirt on the teeth and in the grooves can abrade the

belt and oil can attack belt materials.

Use a stiff brush to remove rust and dirt. U se a soft cloth to wipe

off oil and grease.

M ake sure the components are ready for installation. C lean all

shafts, removing any nicks or burrs. Clean all mating surfaces of the

sprocket, bushing, and shaft. Do not use lubrication or anti-seize

solution on any of these surfaces.

M ake sure the shafts are true and parallel by accurately measuring

the distance between the shafts at three points along the shaft.

The distance between the shafts should be the same at all three

points as shown.

Also, make sure the shafts are rigidly mounted. Shafts should not

deflect when the belt is tensioned.

CHECK1

C HEC K2

C HEC K3

SHAFT 1

SHAFT 2

INSTALL HARDWARE

Correct sprocket selection and installation is important. Before

performing any installation, follow correct lockout procedures to

prevent any accidents.


AN Y work.

QD Bushing



HOW TOINSTALL A SPROCKET WITH A QD HUB

For conventional mounting, insert bushing into the sprocket

aligning the tapped holes in the bushing flange with the thru holes

in the sprocket hub.

Insert capscrews through the thru holes and into the tapped

holes.

Insert the key into the keyseat of the shaft.

With capscrews to the outside, place the sprocket and bushing

assembly on the shaft, positioning the assembly with the bushing

flange towards the shaft bearings. Reverse mounting the QD

bushing can be advantageous for some applications.

M ount the other sprocket in a similar manner.

Check that the teeth of both sprockets are pointing in the same

direction when installing Eagle Pd sprockets.

Snug the capscrews so that the sprocket /bushing assembly canstill move on the shaft.

Align the sprockets using a straight edge. Check for contact in fou

places as shown. Do not use bearings or drive shafts as reference

points for sprocket alignment.

4HRU(OLES

0ULL5P"OLTS

&LANGE

4APPED(OLES

3ETSCREW

+EY

3HAFT1$"53().'#ONVENTIONAL-OUNT

3PROCKET(UB

*QD is a registered Trademark of Emerson P ower Transmission M anufacturing, L. P.

WARNINGDisconnect power supply to the machine before removingor installing sheaves or belts.



29/44

Synchronous BeltsINSTALLATIO N GU IDE

U sing a torque wrench, tighten the capscrews to the torque values

listed below. If there is not a gap of 1/8" to 1/4" between the

bushing flange and the sprocket hub then disassemble the parts

and determine the reason for the faulty assembly.

The sprocket will draw onto the bushing during tightening. Always

recheck alignment after tightening the capscrews. If alignment has

changed, loosen the capscrews and move sprocket/bushing

assembly on shaft to re-align. Tighten the setscrews over the

keyway to the torque values listed in the table.

If the sprockets are straight bore, use the above alignment procedure

and then tighten the setscrews to the correct torque for thesetscrew size as listed in the Torque Specifications table below

(Table 16).

Bushing

CapscrewTorque

SetscrewTorque

SetscrewSize

(in-lb) (ft-lb) (in-lb) (in)

H

SH

SDS

SK

SF

E

F

J

M

N

108

108

108

180

360

720

900

1620

2700

3600

9

9

9

15

30

60

75

135

225

300

87

87

87

165

290

290

290

290

620

1/4

1/4

1/4

5/16

3/8

3/8

3/8

3/8

1/2

QD bushings can be installed with the capscrews on either side,

excluding H , M , and N sizes. Drives with opposing shafts require

one of the sprockets be mounted with the capscrews on the flange

side and one with the capscrews on the hub side.

Split Taper Bushing

I f the sprockets are made for split taper bushings, follow these


HOW TOINSTALL SPLIT TAPER BUSHING SPROCKETS

Put the bushing loosely in the sprocket and start the capscrews

Place the assembly on the shaft. Align both edges of the sprocke

with the edges of its mating sprocket ( i. e. the sprocket on the

driven shaft).

Tighten the capscrews according to the instructions furnished with

the bushings.

HOW TOREMOVE SPLIT TAPER BUSHING SPROCKETS



bushing.

Turn the bolts alternately and evenly until the sprocket has loosened

Remove the sprocket/bushing assembly from the shaft.

#/.4!#40/).43

HOW TOREMOVE A SPROCKET WITH A QD HUB

Place two of the pull-up bolts in the tapped holes in the sprocket.




Table 16 - TORQUE SPECIFICATIONS

Thru Holes

Capscrews

Bushing

Flange

Sheave

TappedHoles


30/44


30

Taper-Lock Bushing

The following instructions illustrate how to install a sprocket made

with a Taper-Lock hub.

HOW TOINSTALL A SPROCKET MADEWITH A TAPER-LOCK HUB



in the bushing.



Start the setscrews into the holes that are threaded in the hub only.


Align both edges of the sprocket with the edges of its mating

sprocket.

Tighten the screws alternately and evenly. T his procedure will


the shaft.

HOW TOREMOVE A SPROCKET MADEWITH A TAPER-LOCK HUB


Place two of the setscrews in the holes that are threaded in the

bushing only.

Turn the setscrews alternately and evenly. T his movement will



CHECK ALIGNMENT

Drive Alignment

Synchronous belts are very sensitive to misalignment. The tension

carrying member has a high tensile strength and resistance to

elongation, resulting in a very stable belt product. Any misalignmen

will lead to inconsistent belt wear, uneven load distribution and

premature tensile failure. In general, synchronous drives should

not be used where misalignment is a problem. Limit misalignmen

to 1/3 degree or 1/16" per foot of center distance. With paralle

shafts, misalignment occurs when there is an offset between the

sprocket faces as in Fig A. M isalignment also occurs when the

shafts are not pararllel as in Fig B.


Always select belts to match sprocket profile. Eagle Pd belts

and sprockets from G oodyear are identified with a unique Colo

Spectrum System. The seven colors used for identification are

Yellow, White, Purple, Blue, Green, O range, and Red. Each colo

represents a different size so that Blue belts are made to operate

with Blue sprockets. M ake sure to obtain the same color belt and

sprockets. When installing other Goodyear synchronous belts, use

the correct sprocket width.


Goodyears Laser Alignment Tool provides an alternative to

checking alignment with a straight edge. Each laser alignment too

comes with a rugged carrying case and detailed instructions to ge

you started with the quickest, easiest, and most versatile alignment

tool on the market today.

Figure A

Figure B

1

4HREADED(UB(OLE5SEDTO)NSTALLSHEAVE

4HREADED"USHING(OLE5SEDTOREMOVESHEAVE

"USHING

3ETSCREWS

(UB

4APER,OCK4-2ELIANCE%LECTRIC#OMPANY


31/44


MATCHING BELTS

Drives using synchronous belts are not recommended to run in

matched sets. I f a special application requires matching, specify

matched belts on the order. N ote: such requests require

additional order lead time. Also, matching code numbers will not

appear on the belts.

HOW TOINSTALL BELTS

Before installation, inspect the belt for damage. B elts should never

appear crimped or bent to a diameter less than the minimum

recommended sprocket diameter.



Shorten the center distance or release the tensioning idler to

install the belt. Do not pry the belt on the sprocket. R efer to the

following Center D istance Allowance tables for the required center

distance adjustment.

P lace the belt on each sprocket and ensure proper engagement

between the sprocket and belt teeth.

Lengthen the center distance or adjust the tensioning idler to

remove any belt slack.

Shorter Center Distance for Synchronous belt installation

Longer Center Distance for Synchronous belt Take-Up

I f you install a belt over one flanged sprocket and one unflanged

sprocket with the sprockets already installed on the drive, allow the

following decrease in center distance for installation and increase

in center distance for tensioning.

Apply the following center distance allowances for Hawk P d and

Falcon P d. A center distance adjustment, or decrease in

center distance, is necessary to install a belt. In addition, an

increase in center distance will be necessary for proper tensioning

If you install a belt together with sprockets, allow the following

decrease in center distance for installation and an increase in

center distance for tensioning.

PitchLengthRange(mm)

Allowance (Decrease)For Installation8M, 14M Belts

(mm/in)

Allowance (Increase)For Take-Up

8M, 14M Belts(mm/in)

Less than 1525

1525-3050

Greater than 3050

2.5/0.1

5.0/0.2

7.5/0.3

2.5/0.1

5.0/0.2

7.5/0.3

I f you install the belt over two flanged sprockets that are

already installed on the drive, allow the following decrease in

center distance for installation and increase in center distance for

tensioning.


Allowance (Decrease)For Installation



Less than 1525

1525-3050

Greater than 3050

22.5/0.9

25.0/1.0

27.5/1.1

2.5/0.1

5.0/0.2

7.5/0.3

8MBelts

14MBelts

(mm/in)

36.5/1.4

39.0/1.5

41.5/1.6

Consider the following center distance allowances when installing

Eagle Pd sprockets.

Since flanges are not necessary on Eagle Pd drives, only one

table of center distance allowances is provided.


Allowance (Decrease)For Installation



Less than 1525

1525-3050

Greater than 3050

34.5/1.4

37.0/1.5

39.5/1.6

2.5/0.1

5.0/0.2

7.5/0.3

8MBelts

14MBelts

(mm/in)

59.2/2.3

62.0/2.4

64.5/2.5


Allowance (Decrease)For Installation Allowance (Increase)

For Take-Up8M, 14M Belts

(mm/in)

Less than 1525

Greater than 1525

10.1/0.4

15.2/0.6

2.5/0.1

5.0/0.2

Yellow, White,Purple Belts

(mm/in)

15.2/0.6

17.8/0.7

Blue, Green,Orange,

Red Belts


32/44


32

TENSION

Install and tension Goodyear synchronous belts properly to ensure

optimum performance.



and increased costs. U nder-tensioned belts lead to ratcheting and

excessive tooth loading, both of which lead to higher maintenancecosts and inefficient transmission of power. Also, over tensioning

belts leads to premature wear, along with bearing, shaft, and

sprocket problems. The result is more frequent replacement of

drive components and costly downtime.

Tensioning Methods

Choose one of two tensioning methods:


The TensionR ite B elt Frequency M eter belt tensioning device mea-

sures actual belt tension and works with all industrial transmission

belts including V-belts, synchronous belts, and Poly-V belts.

Details about the TensionR ite B elt Frequency M eter can befound on the web at www.goodyeari ndustrialproducts.com. O r

contact your local Goodyear authorized distributor.




First, determine the proper deflection force to tension the belt

Deflection forces are listed in Table 17. Deflection forces are also

given on the output of the M aximizer computer drive analysis.

D, Diameter (in)

D, Diameter (in)Q, Deflection (in)F, Force (lbs)

P, Span Length

C, C enter Distance (in)

BeltType

0-100 RPM

New Belt Used Belt

Yellow

White

Purple

Blue

Green

Orange

Red

8GTR 12

8GTR 21

8GTR 36

8GTR 62

14GTR 20

14GTR 37

14GTR 68

14GTR 90

14GTR 125

8M 20

8M 30

8M 50

8M 85

14 M 40

14 M 55

14 M 85

14 M 115

14 M 170

101-1000 RPM

New Belt Used Belt

1000-up RPM

New Belt Used Belt

15

30

60

54

80

107

161

24

42

72

124

38

70

129

171

238

15

23

39

69

47

70

116

162

249

11

21

43

38

57

76

115

17

30

51

88

29

54

99

131

181

11

17

29

50

34

51

84

118

181

12

24

47

44

66

88

131

14

25

42

72

31

57

105

140

194

13

20

35

61

38

56

93

130

201

8

17

34

31

47

63

94

10

18

30

52

23

43

78

104

144

10

15

26

45

28

41

68

95

146

9

19

38

38

57

76

115

7

12

21

36

28

52

95

126

175

12

19

32

56

32

48

79

110

171

7

13

27

27

41

55

82

5

9

15

26

21

39

71

95

131

9

14

24

41

24

35

58

80

125

EAGLEPd

FALCON

Pd

HAWKPd

TABLE 17 - DEFLECTION FORCES FORBELT TENSIONING (LBS)

where: P = span length, inches

C= Center distance, inches

D = Large pulley pitch diameter, inches

d = Small pulley pitch diameter, inches

The gauge deflects the center of the belt span and the force of this

deflection is compared to a target deflection force for the particular

span. Then, one can adjust the belt tension unti l the actual deflection

force equals the target.


33/44


I f using a tension gauge, the deflection scale is calibrated in inches

of span length. Check the force required to deflect the belt the

proper amount. There is an O-ring to help record the force. I f the

measured force is less than the required deflection force, lengthen

the center distance. If the measured force is greater than the

required deflection force, shorten the center distance.

If using other means to apply force to the belt, adjust the center

distance so that the belt is deflected 1/64" per inch of span length

when the proper force is applied.After the belt is properly tensioned,

lock down the center distance adjustments and recheck the

sprocket alignment. If possible, run the drive for approximately 5

minutes with or without load. Stop the drive and lock out the power

source and examine alignment, capscrew torque and belt tension

of the drive. A djust the center distance to increase the belt tension

to the N ew Value in the Deflection Force Tables. Lock down the

drive adjustments and recheck tension. R echeck the belt tension,

alignment, and capscrew torque after eight hours of operation to

ensure the drive has not shifted.

The following few sections detail other issues that could arise during

Synchronous belt installation.

USING A FIXED CENTER DISTANCE

A fixed center distance drive has no adjustment for tensioning or

installing the belt. D ue to the tolerances of drive components,

including sprocket, belt, and drive geometry, a drive with a Fixed

Center Distance is not recommended as adequate belt tension

cannot be assured. P roper belt installation requires a minimum

center to center adjustment. Refer to belt installation for center to

center adjustment. In some cases, fixed center drives cannot beavoided and should be used only with the understanding that belt

life will be reduced.

DESIGN FACTORS

To ensure proper belt selection, consult the appropriate design

manual for Eagle P d, Falcon P d, or Hawk Pd. Due to the

high load capacity of these belts, mak e sure that all of the drive

components are adequately designed. Consult sprocket and other

component manufacturers for design assistance or if verification of

application is needed.

BELT GUARDS

Belt guards ensure cleanliness and safety. Screened, meshed, orgrilled guards are preferable because they allow for air circulation

and heat escape.

5

IDLERS

U se idlers either inside or outside of the belt, preferably outside

Idlers often fu

Goodyear Belts

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