How to judge whether the tooth thickness wear of ZD10-31.5 gear reducer has reached 10%

‌If the tooth thickness wear reaches or exceeds 10% of the original tooth thickness, it is judged as serious wear, and the gear needs to be replaced in time‌.

To determine whether the tooth thickness wear of the ZD10-31.5 gear reducer reaches 10%, quantitative measurement can be carried out through the following steps:

1. Obtain the original design tooth thickness value.
Consult the equipment technical manual or gear drawing to determine the original tooth thickness of the reducer gear of this model at the graduation circle (usually in mm). For standard gears, the tooth thickness can be calculated according to the formula s=, where m is the module.

‌2. Actual tooth thickness measurement‌
Use special tools such as ‌Tooth thickness caliper‌ or ‌Common normal micrometer‌ to measure the current tooth thickness at the gear graduation circle position. It is recommended to select 3 to 5 evenly distributed teeth for measurement and take the average to reduce errors.

3‌. Compare and calculate the wear ratio

Calculation formula:

Wear ratio Original tooth thickness Actual measured tooth thickness Original tooth thickness %

If the result‌≥10%‌, it indicates that the tooth thickness wear has exceeded the standard.

4‌. Basis for auxiliary judgment‌

Abnormal noise and increased vibration occur during operation;

The meshing backlash increases significantly (more than 50% above the standard value);

After disassembly, it was observed that there were obvious grooves, pitting corrosion or metal peeling on the tooth surface.