As a key equipment in the mechanical transmission system, the stable operation of worm gear reducer directly affects the performance of the whole equipment. The following are the common types of worm-gear reducer failure, causes and corresponding elimination methods, hoping to help you quickly diagnose and solve the problem.
I. Reducer overheating
Failure causes:
Overloading: the equipment running load exceeds the design rated value.
Lubricant problem: too little/too much lubricant, poor quality or mismatch of models.
Excessive friction of oil seals: excessive friction between oil seals and shaft journals, generating heat.
Improper connection of the output shaft: Error in the installation position of the output shaft and the drive unit, resulting in extra load.
Troubleshooting:
Adjust to proper load or select a larger model to match actual load.
Add/replace appropriate lubricant according to equipment instructions (e.g., drain out old oil and fill with new oil to ensure proper oil volume).
Apply a small amount of lubricant to the oil seals to reduce friction; replace the seals if they are badly worn.
Re-adjust the connection position of the output shaft and transmission device to ensure coaxiality.
2.reducer murmur (abnormal noise)
Failure causes:
Poor meshing of worm gear and worm gear: uneven meshing gap due to wear of tooth surface or installation error.
Bearing damage or excessive clearance: bearing wear, damage, triggering vibration and noise.
Insufficient lubricant: poor lubrication exacerbates the wear of gears and bearings, resulting in abnormal noise.
Foreign matter intrusion: impurities enter into the reducer, and friction with transmission parts.
Troubleshooting:
Trim the tooth contact area of the worm wheel and worm gear to ensure meshing precision; replace the worn parts if necessary.
Check the bearings and replace them in time if they are damaged or the clearance exceeds the standard.
Replenish appropriate amount of lubricant according to instructions to ensure adequate lubrication.
Clean up internal foreign objects and replace contaminated lubricant.
3.abnormal vibration
Failure causes:
Poor fixing of transmission device: The reducer is loosely connected with transmission parts (e.g. motor, load equipment).
Worm gear / worm wear: long-term operation leads to wear of the worm gear, worm gear tooth surface, transmission accuracy decreases.
Worn or damaged bearings: bearing failure, causing vibration in the shaft system.
Loose bolts: Loose mounting bolts or fastening parts, resulting in structural instability.
Foreign matter intrusion: Impurities enter the interior and interfere with the transmission system.
Troubleshooting:
Re-fix the transmission to ensure a firm connection (check the coaxiality if couplings are used).
Replace worn worm gears and worm shafts to restore transmission accuracy.
Replace damaged bearings and check journal wear.
Tighten all loose bolts and use anti-loosening measures (e.g. lock nuts, spring washers) if necessary.
Clean up internal foreign matter and replace the lubricating oil.
4.Oil leakage
Failure causes:
Oil seal damage: aging, deformation or improper installation of the oil seal, resulting in seal failure.
Gasket damage: gasket (such as end caps, flange) aging or extrusion damage.
Excessive oil: Lubricant is overfilled and spills out of the seal during operation.
Loose oil plug: Oil plug at drain/fill port is not tightened or threads are damaged.
Damaged oil marker: Poor sealing of the oil marker (viewing window), resulting in oil leakage.
Troubleshooting:
Replace damaged oil seals and make sure they are in place (pay attention to the direction of the oil seals and lip lubrication).
Replace damaged gasket and apply sealant to enhance sealing (if applicable).
Drain excess lubricant to bring the oil level in line with the equipment oil level indication.
Tighten oil plug and repair or replace damaged oil plug threads.
Replace the broken oil marker and check the sealing of the oil marker installation.
5.into the force or out of the force shaft does not turn
Failure causes:
Worm gear, worm overheating: long-term overload or poor lubrication, resulting in worm gear, worm seized.
Bearing damage: bearing hold dead, so that the shaft system can not rotate.
Foreign matter intrusion: impurity stuck transmission parts (such as worm wheel, worm or bearing).
Excessive wear of the worm gear and worm shaft: the tooth surface is severely worn, unable to transmit torque.
Troubleshooting:
Repair the overheated worm wheel and worm gear (e.g., repair the tooth surface, replace the grease), or directly replace the parts.
Replace the damaged bearings and check the fit accuracy of journal and bearing seat.
Clean up internal foreign objects and replace contaminated lubricating oil.
Replace the excessive wear of the worm wheel or worm gear, restore transmission capacity.
6.Worm wheel excessive wear
Failure causes:
overloaded operation: long-term more than the rated load, accelerate the wear of worm gear tooth surface.
Poor lubricant: poor lubricant quality, type mismatch or not regularly replaced, aggravating wear.
Insufficient lubricant: inadequate lubrication, resulting in dry friction.
Bearing wear: bearing failure triggers vibration of the shaft system, which indirectly accelerates the wear of worm gear.
High running temperature: poor heat dissipation reduces the viscosity of the lubricant and weakens the lubrication effect.
Troubleshooting:
Adjust the load to the rated range, avoid overload operation.
Replace the lubricant with one suitable for the working condition (e.g. high viscosity, anti-wear type) and maintain it regularly (e.g. change the oil every 2000 hours).
Replenish the lubricant to the specified level to ensure adequate lubrication.
Replace worn bearings and check shaft concentricity.
Improve ventilation conditions (e.g., increase cooling fans, clean cooling channels) to reduce operating temperature.
Through the above fault analysis and troubleshooting methods, you can quickly locate the problem and take measures to ensure the stable operation of the worm gear reducer and prolong the service life of the equipment.