NGW-S52-11-1 How to determine whether the oil temperature is normal during daily operation of the planetary gear reducer

Determination criteria (applicable to NGW-S52-11-1)

• Upper oil temperature limit: ≤95 ℃ (equilibrium oil temperature).

• Surface temperature: ≤85 ℃.

• Temperature rise rate: A warning will be made if it rises rapidly within 15 minutes.

• Ambient temperature: -40~40 ℃; preheat or use low condensed oil when <0 ℃.

Daily judgment steps (can be directly executed)

1. Measure oil temperature: After shutdown for ≥10 minutes, insert the rod thermometer from the dipstick/sampling port for ≥2 minutes to read; during operation, the fixed temperature measurement point close to the oil tank shall prevail.

1. Review surface: Use an infrared thermometer to measure the middle part of the housing or bearing seat, ≤85 ℃; when the oil temperature is ≥85 ℃ and the oil temperature is close to 95 ℃, stop the machine immediately.

2. Calculate temperature rise: Temperature rise = actual measured oil temperature - ambient temperature; if it rises rapidly within > 40 K or within 15 minutes, reduce the load first or shut down the machine for inspection.

3. Synchronous observation: abnormal noise, vibration, oil level/oil quality, sealing and centering; priority is given to check lubrication and installation in case of abnormalities.

Key points and precautions

• The reading position is consistent with the timing to form a baseline; record 'Oil temperature/surface temperature/ambient temperature/working conditions/time'.

• Strengthen ventilation and sealing in high-temperature or high-dust environments; in summer, the surface temperature can be set to be a warning of ≥80 ℃.

• If otherwise specified in the instructions, the manufacturer's parameters shall prevail.