What are the effects of temperature exceeding 80 ℃ on the output shaft of WPDKS100-25-1.1KW worm gear reducer

The impact of temperature exceeding 80 ℃ on the output shaft of WPDKS100-25-1.1KW worm gear reducer can be divided into the following aspects:
1、 Damage to core transmission components

Worm gear meshing failure
High temperature can cause local melting of the copper worm gear (ZCuSn10Pb1) tooth surface and bonding with the steel worm gear. If it continues for more than 30 seconds, irreversible metal fusion welding may occur, and the worm gear and worm gear need to be replaced as a whole (maintenance costs account for 40% -60% of the total cost). At the same time, the failure of high-temperature lubrication can accelerate the wear rate of the tooth surface to 5-10 times that of normal working conditions, causing tooth surface peeling or cracking.

Chain failure of bearing system
Output shaft bearings (such as tapered roller bearings) are prone to plastic deformation of rolling elements or breakage of retaining frames due to radial impact forces at high temperatures, ultimately leading to the phenomenon of "shaft hugging". If the motor is forcibly driven, sliding friction will occur between the inner ring of the bearing and the shaft neck, and between the outer ring and the housing hole, causing wear grooves on the shaft neck (depth>0.2mm) and enlargement of the housing hole (0.1-0.3mm).

2、 Mechanical performance degradation

Abnormal fit clearance of shaft system
The thermal expansion of metal components can cause an imbalance in the pre tightening force of bearings: excessive pre tightening force can cause friction heating of the bearings (temperature rise>20 ℃ within 1 hour), while insufficient pre tightening force can cause axial displacement (>0.1mm) and meshing impact noise. Long term high temperature can also cause wear on the mating surface between the journal and the bearing, leading to interference fit failure.

Accelerated aging of seals
The oil seal lip hardens at high temperatures, causing the friction coefficient with the shaft to increase from 0.05 to over 0.2. The temperature at the shaft extension end may be more than 30 ℃ higher than the environment, ultimately leading to oil seal burn marks or bright wear on the shaft surface.

3、 Safety and efficiency risks

Power transmission interruption
The problems of bonding and bearing jamming caused by high temperature can directly lead to the output shaft being inflexible or even stuck, causing the gearbox to lose its torque transmission ability.

Fire hazard
If lubricating oil leaks due to high-temperature coking or seal failure, it may ignite surrounding flammable materials, especially in enclosed environments where the risk is higher.

Note: The reducer of this model needs to be stopped immediately when the oil temperature exceeds 80 ℃, and the lubrication system (if the oil quality and iron content are greater than 100ppm, the oil needs to be replaced) and heat dissipation conditions (the spacing between heat sinks should be maintained at 5-8mm) should be checked.