The oil level requirements of different models of JS gear reducers are similar in principle but have different numerical values. The core differences are determined by model size, series, and installation method. The equipment nameplate and instructions must prevail.
1. Core differences and common standards
General principle: After shutting down and cooling to normal temperature, the oil level must be between the oil window/dipstick MIN and MAX, 2/3 is recommended (taking into account lubrication and oil churning losses).
Model impact:
The larger the size (such as JS132, JS160), the higher the oil pool volume and oil immersion depth requirements, and the oil needs to be filled to a higher level to cover the large gear (1–2 tooth heights).
The more stages there are (such as multi-stage JS), it is necessary to ensure that the gears at all stages are soaked by oil, and the oil level needs to match the oil pool design of the multi-stage structure.
Installation method: press the center line of the oil window for horizontal installation; for vertical/inclined installation, the oil level needs to be raised to ensure that the upper parts are immersed in oil.
2. Three-step method for quick judgment
Check the mark: Confirm the MIN/MAX scale of the oil window/dipstick. The reading must be within the range.
Look at the immersion oil: the low-speed large gear is immersed in 1-2 tooth heights (about 25-60mm, depending on the tooth height of the model).
Temperature rise measurement: oil temperature ≤80°C and temperature rise ≤40°C after 1 hour of operation. If abnormal, the oil level needs to be adjusted.
3. Practical operations and taboos
Inspection timing: Be sure to stop the machine and then measure after cooling to avoid reading deviations caused by oil splashing during operation.
Refueling specifications: Use a 80-100 mesh filter to prevent impurities from entering the tank.
Taboo points: It is strictly forbidden to run without oil; avoid exceeding the oil level (easy to stir up the oil, generate heat, and cause oil leakage); it is strictly forbidden to mix different types/brands of oil.
4. Summary
The general oil level rules for all models of the JS series are the same, but the specific values vary by model. Please refer to the manual or nameplate of the model.
