What are the common faults of ZQ500-16-3 reducer in high humidity environment?

In high humidity environments, ordinary horizontal gear reducers like ZQ500-16-3 are most prone to faults such as moisture ingress, lubrication failure, corrosion, and aging seals.

1. Emulsification, whitening, and deterioration of lubricating oil (most common)
Phenomenon: the oil turns milky white, there are many foam, the oil level rises, and there is an odor

Reason: Moisture/condensate enters the casing and mixes with gear oil

Consequence: Oil film damage → Rapid wear of gears and bearings

2. Gear corrosion, pitting, and abnormal meshing noise
Phenomenon: Knocking and impact sound when restarting after stopping the machine

Reason: Internal condensation → Rusting of tooth surface → Decreased meshing accuracy

Typical: Low speed gears are most prone to rust

3. Early failure, heating, and locking of bearings
Phenomenon: High bearing temperature, large vibration, and inability to rotate

Reason: Moisture entering the raceway → rusting, wear, and sticking

The lifespan of bearings will be significantly shortened under high humidity conditions

4. Aging and oil leakage of shaft seals and oil seals
Phenomenon: Oil leakage and dripping at the output/input shaft end

Reason: Moisture+temperature changes → rubber hardening, loss of elasticity

Oil leakage, in turn, will cause more severe moisture absorption, creating a vicious cycle

5. Internal condensation and "water tank effect" inside the box
Phenomenon: Upon opening the lid, water droplets and mist can be seen on the inner wall

Reason: Shutdown for cooling → Internal air condensation

ZQ500 has a large casing, slow heat dissipation, and is particularly prone to condensation

6. Breathable cap/breathing valve for water and moisture intake
Phenomenon: The oil quality deteriorates rapidly, but no obvious leakage points can be found

Reason: Ordinary breathable caps are not moisture-proof, and rainwater and moisture can be directly inhaled

7. Fasteners, box body rust, and mating surface biting
Phenomenon: End cap screws rust and cannot be removed

Reason: high humidity+temperature difference → intensified corrosion

8. Increased vibration and unstable noise
Phenomenon: Normal sound under no-load/light load, sudden noise change after load

Reason: Corrosion causes uneven meshing clearance and increased bearing clearance