How to determine whether the WPS50-30-B worm gear reducer needs maintenance

To determine whether the WPS50-30-B worm gear reducer needs maintenance, a comprehensive evaluation should be conducted from three dimensions: monitoring the operating status, regular inspection items, and identifying abnormal signals. The core is to combine "listening, watching, touching, and testing" with regular data recording to timely discover potential faults and hidden dangers. The following are specific judgment methods and maintenance trigger criteria:
Daily operation status monitoring: Real time identification of abnormal signals
In daily operations, maintenance needs to be initiated if the following situations occur through sensory and basic tool monitoring:
1. "Listening": Abnormal noise - a direct signal of transmission system failure
During normal operation, the gearbox should only
Uniform and smooth "buzzing" transmission sound
No sharp, intermittent, or irregular noise. If the following sounds occur, stop the machine immediately for inspection:

Harsh metal friction sound: It may be due to wear and tear of the worm gear/worm gear tooth surface, cracking of the tooth tip, or excessive/insufficient meshing clearance (abnormal clearance caused by installation deviation or long-term operation);

Intermittent impact sound of "clang": It may be due to damage to the worm bearing (ball breakage, cage fracture), or loose connection between the worm wheel hub and the shaft;

High frequency "screaming" sound: mostly due to lubrication failure (low oil level, deteriorated oil quality), resulting in dry friction on the tooth surface or bearing wear due to lack of oil.

2. "Touch": Temperature abnormality - warning of excessive lubrication/heat dissipation/load
After shutdown (or real-time monitoring with an infrared thermometer), touch the gearbox
Box shell, bearing end cover, input/output shaft end
The normal temperature should be ≤ ambient temperature+40 ℃ (i.e. not exceeding 60-70 ℃ at room temperature, and not hot to touch). If the following situations occur:

Local overheating of the box (such as sudden temperature rise near the worm gear side): It may be due to poor meshing of the worm gear (such as tooth surface bonding, assembly misalignment), or long-term load exceeding the rated value (such as stuck driven equipment);

The temperature of the bearing end cover is too high (over 80 ℃): It is most likely due to bearing wear (raceway wear, ball deformation) or dry bearing grease, and the bearing condition needs to be disassembled and inspected.

3. "Look": Appearance and leakage - intuitive manifestation of structural/sealing failure
Regularly observe the exterior and surroundings of the gearbox, and maintain it if the following phenomena occur:

Lubricating oil leakage: Check the joint surface of the box body and the sealing ring (oil seal) of the input/output shaft. If there are oil stains dripping or surrounding equipment is contaminated with oil, it indicates that the sealing element is aging (such as oil seal lip wear, O-ring deformation) or the box bolts are loose. Replace the sealing element and tighten the bolts;

Box deformation/damage: If there are cracks or flange surface deformations in the box, it may be caused by uneven stress during installation (such as inconsistent tightness of the base fixing bolts) or long-term overload. The machine should be stopped to check the structural strength, and the box should be replaced if necessary;