Sumitomo Cyclo BBB4 - Troubleshooting; Reducer Troubleshooting

Troubleshooting
Reducer Troubleshooting
Reducer Troubleshooting
This troubleshooting guide provides assistance in identifying and overcoming common problems with reducers and motors. If a
problem with the reducer and/or the motor is not listed below, please consult the factory for assistance.
Reducer Troubleshooting
Problem with the Reducer Possible Causes Suggested Remedy
Runs Hot
Overloading Load exceeds capacity of the reducer
Check the rated capacity of the reducer, replace with unit of sufficient capacity
or reduce the load
Improper lubrication
Insufficient lubricant Check lubricant level and increase to recommended level
Excessive lubricant Check lubricant level and reduce to recommended level
Incorrect lubricant Flush old lubricant from the unit and refill with correct recommended lubricant
Vibration or
Noise
Loose foundation bolts
Weak mounting structure
Inspect mounting of reducer. Tighten loose bolts and/or reinforce mounting &
structure
Loose hold-down bolts Tighten bolts
Worn disc and/or bevel
gearing
Load exceeds capacity of reducer
If bevel gearset is damaged, contact the factory.
If Cycloid discs are damaged, disassemble the Cyclo® portion and replace discs.
Re-check the rated capacity of the unit
Bearing failure
Insufficient lubricant
If output bearings are damaged, contact the factory
IfbearingsinCyclo®portionaredamaged,replacetheaectedbearings.Clean&
flush the reducer and fill with the correct type and quantity of lubricant
Load exceeds capacity of reducer
Check the rated capacity of the reducer. Replace with unit of sufficient capacity
or reduce the driven load
Insufficient lubricant Insufficient lubricant Check lubricant level and adjust to recommended level
Damaged Cyclo® pins
and rollers
Load exceeds capacity of reducer
Disassemble Cyclo® portion of reducer and replace ring
gear housing pins and rollers. Check load on reducer
Output
Shaft/Hub does
not turn
Motor shaft broken
Load exceeds capacity of reducer or
repetitive shock loading
Replace broken shaft. Check rated capacity of reducer
Key missing or sheared
ooninputshaft
Replace key
Eccentric bearing
broken
Insufficient lubricant
Replace the Eccentric Bearing in the Cyclo® portion. Flush
and refill the unit with the recommended lubricant
Motor does not turn Motor Refer to the “Motor” portion of this Troubleshooting guide
Oil Leakage
Worn seals
Caused by dirt or grit entering the seal
area
Replace the oil seals
Leakage into motor
Excessive lubricant Check the lubricant level and adjust to the recommended level
Air breather clogged
Clean or replace element, being sure to prevent any dirt from falling into the
reducer
Improper mounting position, such as
other than designed mounting angle
Mount the unit in its designed mounting angle
Operation & Maintenance Manual 63
Cyclo® BBB4