Bearing Protection - WWOA.org | WWOA · carbon brushes brush holders bearing protection helwig...
Transcript of Bearing Protection - WWOA.org | WWOA · carbon brushes brush holders bearing protection helwig...
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Bearing Protection
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• Family-Owned Company since 1928
• Dominant Source for Replacement Carbon
Brushes and Brush Holders in North America
• Major OEM Brush Supplier
• Supplier of Brush holders, Springs, Bearing
Protection, and Mechanical Carbons
• One of the last major American owned carbon
companies
• Diverse, Dedicated Workforce of over 250 Caring
People
HELWIG CARBON PRODUCTS, INC.
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
MODERN PRODUCTION FACILITY IN MILWAUKEE, WI, USA
135,000 sq. Feet 12,500 sq. Meters
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
CARBON BRUSHES
BRUSH HOLDERS
BEARING PROTECTION
HELWIG CARBON’S PRODUCT LINE
• VANES
• SEALS
• BEARINGS
• BUSHINGS
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
QUALITY ISO 9001:2008
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
WWOA – Southeast Regional Meeting
March 2019
BEARING PROTECTION
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
The leading cause of electric motor failures are the bearings, followed by the
stator windings.
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• VFDs induce common mode voltage on the
motor shaft
• Current passes from the motor shaft to the
bearings to ground
• Pitting and Fluting leads to bearing failure
and costly repairs
PROBLEM:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• Accumulated voltage seeks path of least
resistance to ground
• Often path leads through motor bearings
and bearing race
• Voltage discharges greater than 2V will
cause bearing damage.
PROBLEM:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
This damage is often a fluted pattern, pitting, etc. The
resulting irregular surface on the bearing causes noise,
vibration, and premature bearing failure.
DAMAGE:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
ROOT CAUSES FOR BEARING CURRENT:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• Insulated Bearings: Very expensive with significant lead times
• Inductive Choke: Expensive & only partially effective
• Conductive Grease: Not an accepted viable solution
• Shaft Grounding Fiber Ring: Only reduces the current flow. Difficult to install
• Helwig Carbon Bearing Protection Kit: Affordable. Provides low resistant path to
ground – less than 1 volt.
OPTIONS:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
HELWIG CARBON BPK SOLUTIONS:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• Silver Graphite Brush provides least
resistant path to ground
• Constant Force Spring keeps brush in
contact with the shaft
• Very little electrical wear – almost all
mechanical
• Extra long life!
• Engineered Silver Graphite material is self-
lubricating, low maintenance
HOW DOES IT WORK?
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
UNPROTECTED VFD MOTOR
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
FIBER RING INSTALLED
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
BPK INSTALLED
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
SUMMARY and COMPARISON
Technology CostEase of
InstallationComments
Insulated Bearings $$$$ Difficult Motor needs to be designed to facilitate insulation
Ceramic Bearings $$$$ Difficult Best done on new motor
Conductive Grease $ Simple Conductive particles increase bearing wear
Metal Fiber Brushes $$$Moderate to
Simple
Can have very high wear rates
Debris between fibers render useless
Can carry significant current
Carbon Fiber Brushes $$$ Moderate
Motor needs to be uncoupled to mount
Need different size for each shaft size
Needs silver epoxy to enhance the performance
Cannot carry higher current
Leaves some potential on shaft
Helwig Bearing Protector $$Moderate to
Simple
Can mount without removing motor
Universal shaft size
Unlimited current carrying capacity
Lower inventory
Many years of service from a single brush
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• This brush is running 24-7 for
last 10 years
• With ZERO bearing failures
reported
• Still has some brush life left
LONGEVITY TESTING:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
ULR COMPLIANT
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
MOUNTING OPTIONS
* Drill & Tap
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
MOUNTING OPTION
* 3M Dual Lock with Ground Wire
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
More than 1 kit used on larger shafts than 4”
(Avoid 180 degree mounting)
• This option is used by GE
• On Industrial Motors for 24 years
• And still remains successful
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
MOUNTING OPTION
* Internal Mount
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
SLEEVE & SHIM
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
SELECTING THE RIGHT BPK
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
CUSTOM MOUNTING BRACKETS
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
APPLICATION: FAN/BLOWER
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
APPLICATION: HYDRONIC PUMP
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
APPLICATION: WIND PITCH MOTOR
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
TRANE – Lexington Facility
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
OEM: BALDOR ABB
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
OEM: WEG
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
OEM: WEG
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
OEM: BROOK CROMPTON
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
OEM: WORLDWIDE HYUNDAI
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
OEM: WORLDWIDE HYUNDAI
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• The brush should ride perpendicular to the shaft
• The Kit should be as close as possible to the bearing
• The brush track should be free of keyways, scratches, nicks, or defects of any kind
• Ideal shaft surface should have a finish between 10 and 63 RMS
• For 2 or more kits, mount at 90° not 180°
• Do not use any external lubrication
• There is no need to apply silver epoxy on the shaft
• Per Electric motor industry standards insulated bearing is needed on ODE (Opposite
Drive End) for motors above 100 HP
RECOMMENDATIONS:
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
BPK LABELS
* Included with every BPK kit.
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T H E L E A D E R I N C A R B O N T E C H N O L O G Y ( 8 0 0 ) 9 6 2 - 4 8 5 1 | ( 4 1 4 ) 3 5 4 - 2 4 1 1
• Effective and reliable long-term performance
• One size fits a wide range of motor frame sizes
• Easy to install
• Maintains positive contact through life of the silver graphite brush
• Long life – almost no electrical wear just mechanical. Silver Graphite material provides
low friction and no need for silver epoxy paint on shaft
• Cost effective alternative to other options
Helwig Bearing Protection Kit Advantages:
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THANK YOU
Jay Koenitzer
Sales & Service Representative414-362-6256Jay.koenitzer@helwigcarbon.comwww.helwigcarbon.com