Troubleshooting  Reducers

Worm Gear Reducers

1Abnormal temperature rise
2Noisy
Large vibration
3Oil leak
4Output shaft does not rotate
5Both input and output shafts do not rotate
Answers
1Abnormal temperature rise
Cause 1Overload operation Solution Check and apply the correct load
Cause 2Insufficient or too much lubricant Solution Fill with the appropriate volume
Cause 3Oil contamination or wrong oil Solution Replaced with new and correct oil
Cause 4Bearings are overtightened Solution Contact Tsubaki for adjustment
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2Noisy
Large vibration
Cause 1Damaged bearings Solution Contact Tsubaki for repair
Cause 2Bad tooth contact Solution Contact Tsubaki for repair
Cause 3Bearings are overtightened Solution Contact Tsubaki for repair
Cause 4Damage to the teeth Solution Contact Tsubaki for repair
Cause 5Insufficient oil Solution Contact Tsubaki for repair and lubrication
Cause 6Contaminated with foreign objects Solution Contact Tsubaki for repair and lubrication
Cause 7No shaft alignment Solution Center the shaft accurately so it is in alignment with the system
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3Oil leak
Cause 1Wear and damage to the oil seal Solution Replace the oil seal (including filter, depending on model )
Cause 2Damaged oil gauge Solution Replace the oil gauge
Cause 3Bolts/plugs have loosened Solution Retighten loose bolts/plugs
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4Output shaft does not rotate
Cause 1Wear of worm wheel Solution Contact Tsubaki for repair
Cause 2Breakage of worm shaft or worm wheel Solution Contact Tsubaki for repair
Cause 3Breakage of worm wheel hub and output shaft key Solution Contact Tsubaki for repair
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5Both input and output shafts do not rotate
Cause 1Jammed with foreign objects Solution Contact Tsubaki for repair
Cause 2Damaged or broken bearings Solution Contact Tsubaki for repair
Cause 3Seized gear tooth surfaces Solution Contact Tsubaki for repair
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The above table shows the most common problems in daily operation, and their countermeasures.
For problems other than these, please contact your dealer.
When you make an inquiry, provide the dealer with the following information from the nameplate.

  • (1)Serial number (MFG NO.)
  • (2)Model No. (TYPE)
  • (3)Reduction ratio (RATIO)or Speed (OUTPUT SPEED)
  • (4)Drawing number (DRAWING NO.)