Rodamientos Print

Caractersticas Clculo Conguracin Retencin Tolerancias Montaje-desmontaje Lubricacin

Rodamientos

Samuel Snchez Caballero

[email protected]

Universitat Politcnica de Valncia

18 de marzo de 2015


Componentes

ME11-01a/04.00

Elemento de rodadura

Elemento derodadura

Pista exterior

Pista inferior

Pista interior

Pista superior

Jaula

Jaula

source: Niemann, Maschinenelemente


Componentes

Ball

Taper Roller Sphericall Roller (Asym.)

Cylindrical Roller Needle Roller

Sphericall Roller (Sym.)

ME11-02/04.00

source: FAG


Componentes

source: FAG

ME11-03a/04.00

Lug cagefor deep grooveball bearings

rivet cagefor deep grooveball bearings

Main functions of the cageSeparation of rolling elements to keep friction and heat development at a minimum.Keeping rolling elements at equal distances for uniform load distribution.Retaining rolling elements in separable bearings and in bearings which are swiveled out.Guiding rolling elements in the unloaded zone of the bearing.

Pressed Cages


Componentes

Riveted machined cagefor deep groove ballbearings

Brass window-type cagefor angular contact ballbearings

Machined brass cagewith integral cross-piece rivets

for cylindrical roller bearings.

Solid Cages -- Machined brass cages

source: FAG

ME11-03b/04.00


Componentes

window-type cagefor single-row angular contactball bearings

window-type cagefor cylindrical roller bearings

Solid Cages -- Moulded cages made of glass-fibre reinforced polyamide

source: FAG

ME11-03c/04.00


Proceso de diseo

Choice of the bearing type

Choice of the bearing arrangement

Determination of the bearing size

Definition of the bearing data

Structure of the surrounding parts

Lubrication and maintenance

Mounting and dismounting

ME11-05b/04.00

source: FAG


Prestaciones

Thrust bearings

Load carrying capacity

low medium high

low medium highnoneaxial

Alignment

none very low low medium

Load carrying capacity

low mediumnoneradial

Speed suitability

none very low low medium

Alignment

low medium highnone

Speed suitabilitylow medium high

low medium high

Radial bearings

Ball bearings

Ball bearings

Roller bearings

Roller bearings

axial

radial

ME11-04a/03.04


Tipos

ME11-04b/03.04

Deep groove ball bearing, single row Angular contact ball bearing, single row

Angular contact ball bearing, double row Four-point bearing source: FAG


Tipos

Self-aligning ball bearing Thrust ball bearing, single direction

Thrust ball bearing, double direction Angular contact thrust ball bearing, double direction

ME11-04c/03.04


Tipos

Cylindrical roller bearing, single row Cylindrical roller bearing, double row

Cylindrical roller bearing, double row, full complementTapered roller

bearing

ME11-04d/03.04

source: FAG


Tipos

Barrel roller bearing Spherical roller bearing

Cylindrical roller thrust bearing Spherical roller thrust bearing

ME11-04e/03.04

source: FAG


Capacidad de carga

Source: SKF

ME11-06/04.00


Velocidad

n [rpm]

ME11-07/04.00

source: SKF


Tabla comparativa


Designacin Normalizacin

La tabla muestra la denominacin de los rodamientos, su identificacin


Designacin

ME11-09d/04.00

ISO

Source: FAG PC-Catalogue

Cylindrical roller bearingFlanges on outer ringWidth series 2Diameter series 314x5 = 70mm bore dia.

NU2314

Spherical roller bearingWidth series 3Diameter series 0600mm bore dia.

230/600

Spherical thrust roller bearingWidth series 9Diameter series 412x5 = 60mm bore dia.

29412

Angular contact ball bearing, single rowWidth series 0Diameter series 305x5 = 25mm bore dia.

7305

Tapered roller bearingWidth series 0Diameter series 225x5 = 125mm bore dia.

30225

Deep groove ball bearingWidth series 0Diameter series 202 = 15mm bore(= 8, see

Dimensioning

Shaft

Shaft

Dimension

Dimension

Mass Load rating - Factor

Load rating - Factor

Drawing

Limiting

Limiting

Reference

Reference

Code

Code

Abutment dimension

Abutment dimension

~ speed

speed

speed

speed

dyn. stat.

d D B C T 1sr , r 2s r 3s , r 4s a J C e Y C 0 Y 0 Bearing D D D D D a a r g1,2 r g3,4min min ~ ~ DIN max

1

min2

min3

max3

min4

min1

min2

max maxmm kg kN kN min

-1FAG ISO 355 mm

15 15 35 11 10 11.75 0.6 0.6 8 26.4 0.054 15 0.35 1.73 14.3 0.95 24000 14000 30202 20 19 29 29 32 2 1.5 0.6 0.615 42 13 11 14.25 1 1 10 28.1 0.096 23.2 0.29 2.11 20.8 1.16 20000 13000 30302A T2FB015 22 21 36 36 38 2 3 1 1

17 17 40 12 11 13.25 1 1 10 29.1 0.082 19.3 0.35 1.74 19 0.96 20000 13000 30203A T2DB017 23 23 34 34 37 2 2 1 1

17 40 16 14 17.25 1 1 11 28.7 0.105 29 0.31 1.92 30 1.06 20000 11000 32203A T2DD017 22 23 34 34 37 3 3 1 117 47 14 12 15.25 1 1 11 31.8 0.129 28 0.29 2.11 25 1.16 18000 11000 30303A T2FB017 25 23 40 41 42 2 3 1 117 47 19 16 20.25 1 1 12 31.5 0.182 36.5 0.29 2.11 36.5 1.16 18000 11000 32303A T2FD017 24 23 39 41 43 3 4 1 1

20 20 42 15 12 15 0.6 0.6 10 33 0.108 24 0.37 1.6 29 0.88 18000 9500 32004X T3CC020 25 25 36 37 39 3 3 0.6 0.620 47 14 12 15.25 1 1 11 34.5 0.126 27.5 0.35 1.74 27.5 0.96 17000 11000 30204A T2DB020 27 26 40 41 43 2 3 1 1

20 52 15 11 16.25 1.5 1.5 16 37.8 0.174 31 0.73 0.82 30.5 0.45 14000 9500 31304 27 27 40 45 48 3 5 1.5 1.520 52 15 13 16.25 1.5 1.5 11 36.1 0.188 34.5 0.3 2 33.5 1.1 15000 10000 30304A T2FB020 28 27 44 45 47 2 3 1.5 1.520 52 21 18 22.25 1.5 1.5 14 35.3 0.241 46.5 0.3 2 48 1.1 15000 9500 32304A T2FD020 27 27 43 45 47 3 4 1.5 1.5

ME11-09e/03.04


Clculo dinmico

L =10h [hr]( )CP10

60.np6

L =10 [10 rev.]( )CPp 6

L10 Duracin en mill. de rev. L10h Duracin en horas

Capacidad de carga

Velocidad de giro (rpm)

Carga equivalente= X . F + Y . Fr a

Exponente (Hertz)

= 3= 10/3

Bolas

Rodillos

source: SKF/FAG

ISO

ME11-10a/04.00

P C

n

p

X:Y:F :F :

Factor radialFactor axialCarga radialCarga axial

ra


Factores de carga

Type of Bearing e X Y X Y X Y X Y

Deep groove ball bearingF / Ca 0 = 0.025 0.22 2.0

0.240.270.310.370.441.14= 40= 32 0.86

1.5tan1.5tan1.5tan

0.56

0.35

0.4

1.00

1.00

1

0.62

0.670.65

1.00

11

1.81.61.41.21.0

2.0

0.56 1.001.81.61.41.21.0

0.57

0.6/e

0 0

0

0

1.17

1/e0.975/e

0.73

0.675/e0.63/e

= 0.04= 0.07= 0.13= 0.25= 0.5

Self-aligning ball bearing

Angular contactball bearing

Spherical roller bearingTaper roller bearing

F / F > ea r F / F > ea rF / F ea r F / F ea r

Single Row Double Row

source: SKF/FAG

ME11-10c/04.00


Clculo dinmico

L = ana 1 2 3 10. a . a . L

L = ana 1 23 10. a . L

Lna

a1

a2

a3

a23

Duracin para tasa de fallo n

ISO

Factor ajuste confiab. (90%)

Factor de ajuste por material

Factor ajuste por cond. funcion.

Factor de ajuste combinado

Tasa de fallo [%] 10

L10a L5a L4a L3a L2a L1a

1.00 0.62 0.53 0.44 0.33 0.21

5 4 3 2 1

Duracin Lna

Factor a1

source: SKF/FAG

ME11-10b/04.00


Conguracin jo-libre

locating-floating bearing arrangement

Fa1

Fa1

Fr1

Fr1

Fr2

Fr2

F

F

Supporting bearing arrangement:

adjusted bearing or floating bearing arrangement

ME11-11a/04.00

Source: Franke, Maschinenelemente


Conguracin jo-libre

--

libre

libre

libre

libre

fijo

fijo

fijo

fijo

ME11-11b/04.00

Source: FAG


Conguracin jo-libre

--

ME11-11c/04.00

Source: FAG

floating

floating

floating

floating

locating

locating

locating

locating


Conguracin jo-libre

s s s

ME11-11d/04.00

Source: FAG


Conguracin jo-libre

ME11-11e/04.00

Source: FAG

:

X-Arrangement (Face to Face) O-Arrangement (Back to Back)


Conguracin jo-libre

ME11-11f/04.00

Source: FAG

X-Arrangement(Face to Face) O-Arrangement (Back to Back)

O-Arrangement (Back to Back)O-Arrangement (Back to Back)

L

L

:


Conguracin jo-libre

ME11-11g/04.00

Source: FAG


Conguracin jo-libre Montaje






Ejemplo: Motor elctrico

ME11-11h/04.00

Source: FAG


Ejemplo: Eje sierra

ME11-11i/04.00

Source: FAG


Ejemplo: Diferencial

ME11-11j/04.00

Source: FAG


Transmisin de la carga en rodamientos cnicos y de

contacto angular

FrA

LA

LB

L ab

FR

FrB

RB

rA FbaLbL

F

RA

rB FbaLaL

F

ME11-10d/04.01


Transmisin de la carga en rodamientos cnicos

Bearing A Bearing BAxial Load for equivalent dynamic load

Load Condition

FY

rA

A

FY

rA

A

F2 Y

rA

A

FrA

Ka

FrB

F2 Y

rA

A

F2 Y

rB

B

F2 Y

rA

A

F2 Y

rA

A

F2 Y

rB

B

FY

rA

A

FY

rA

A

FY

rB

B

FY

rB

B

FY

rB

B

FY

rB

B

Rodamientos Print

Documents

Transcript of Rodamientos Print