Worm Gear Reducers
6.3 Malfunctions
Table 3
Malfunctions
Causes
Solutions
Overheating
Improper connection between prime mover, reducer and the operation device
Adjust to proper position and connection
Overloading
Adjust to proper load
Over friction of seals
Reduce lubricant at oil seal
Lubricant overfi lled or shortage
Adjust to proper oil level as recommended
Oil contamination or inferior oil
Replace with new oil
Vibration
Prime mover, reducer and the operation device mounted poorly
Find loose connection and tighten
Tooth surface of worm gear is worn-out or damaged
Replace worm gear sets (We will cooperate with you when necessary)
Bearing worn-out
Replace bearing
Bolt loose
Tighten screw
Noise
Bearing damaged or too large of a clearance
Replace bearing
Worm gear sets mesh poorly
Mend tooth surface or replace worm gear sets(Please contact to us)
Lubricant shortage
Fill with correct amount of oil
Foreign object in box
Drain all the oil in order to remove foreign object and refi ll with clean oil
Oil leakage
Oil seal lip worn-out
Replace oil seal
Shaft of oil seal worn-out
Replace input or output shaft
Too much oil
Drain oil to correct level
Oil screw plug loose
Tighten oil screw plug
Oil gauge damaged
Replace oil gauge
Tooth surface of
worm gear sets wear
quickly
Over load
Adjust to proper loading
Lubricant not correct
Replace proper lubricant
Lubricant shortage
Fill with additional oil to the correct level
Did not replace lubricant in time, oil deteriorated
Replace oil according to maintenance schedule
Overheating while running
1. Refer to "Overheating" 2. Increase air fl ow around reducer
NOTE: Short-term oil/grease leakage at the oil seal is possible in the run-in phase(24 hours running time).
6
Summary of Contents for Shimpo Kuma NWM Series
Page 1: ...NWM NWS Operating Manual...