How to determine if the lubrication status of WPS70-10-A worm gear reducer is normal

To determine whether the lubrication status of WPS70-10-A worm gear reducer is normal, it is necessary to comprehensively judge from three aspects: visual inspection, operation parameter monitoring, and oil performance testing. The core is to confirm whether the lubricating oil meets the four functions of "lubrication, cooling, sealing, and rust prevention". The specific method is as follows:
1、 Visual inspection: preliminary judgment through "looking, checking, and touching"
1. Check the lubricating oil level and appearance (most basic)

Liquid level inspection:
Stop the machine for more than 30 minutes (allowing the oil to flow back to the casing), open the oil level plug/gauge on the side of the gearbox, and observe whether the oil is between the "lowest highest" scale:

If the oil level is below the "minimum mark": insufficient lubrication may cause dry friction on the tooth surface and bearings, and the same type of lubricating oil needs to be replenished;

If the oil level is higher than the "highest mark": the stirring resistance increases, the oil temperature rises, and it may also cause oil seal leakage, requiring the discharge of excess oil.

Appearance inspection:
Observe the color, transparency, and impurities of the oil:

Oil in dark black/ink color: indicates that the oil has oxidized and deteriorated (due to high temperature or expired use), leading to a decrease in lubrication performance;

The oil is turbid and contains white emulsion: there is a high probability that water will be mixed in (such as water entering due to oil seal damage or humid environment), which will damage the oil film and cause parts to rust;

There are metal debris/particles in the oil: it may be due to wear of the worm gear teeth and bearing peeling, and the machine needs to be stopped immediately to inspect the core components.

Normal state: New oil (usually mineral oil) appears light yellow/transparent, gradually turns light brown during use, and has no obvious impurities;

Abnormal state:

Oil in dark black/ink color: indicates that the oil has oxidized and deteriorated (due to high temperature or expired use), leading to a decrease in lubrication performance;

The oil is turbid and contains white emulsion: there is a high probability that water will be mixed in (such as water entering due to oil seal damage or humid environment), which will damage the oil film and cause parts to rust;

There are metal debris/particles in the oil: it may be due to wear of the worm gear teeth and bearing peeling, and the machine needs to be stopped immediately to inspect the core components.

2. Check if the seals are leaking (indirectly reflecting the lubrication status)

Focus on checking for oil stains on the input/output shaft oil seal, housing joint surface, and drain plug:

Slight leakage (small amount of oil marks): may be in the early stage of oil seal aging, can be temporarily observed;

Obvious Dripping/Oil Flow: If there is a large amount of oil leakage, the oil level will quickly decrease, indicating seal failure (oil seal/gasket needs to be replaced). It is necessary to replenish lubricating oil and investigate the cause of the leakage simultaneously.

2、 Monitoring of operating parameters: determining lubrication effectiveness through "listening and testing"
1. Listen to running noise (abnormal noise is often related to insufficient lubrication)