The oil leakage phenomenon of the reducer of the explosion-proof electric hoist crane may be caused by various reasons. The following is an analysis of these reasons and corresponding treatment methods:

1、 Reasons for oil leakage

Aging or damage of seals:

The seals inside the gearbox (such as oil seals, O-rings, etc.) may age, harden, or wear out after prolonged use, leading to a decrease in sealing performance and causing oil leakage.

Improper installation:

During the installation process of the gearbox, if the seals are not installed properly, the bolts are not tightened, or the installation angle is incorrect, it may lead to seal failure and cause oil leakage.

Oil level too high:

If too much lubricating oil is added to the gearbox, the oil may overflow due to splashing or excessive pressure when the gearbox is running, causing oil leakage.

Box damage:

The gearbox body may crack or break after long-term use or external impact, causing lubricating oil to leak from the damaged area.

Breather hole blockage:

Gearboxes are usually equipped with ventilation holes to maintain pressure balance inside the casing. If the ventilation hole is blocked, the pressure inside the box may increase, forcing lubricating oil to leak from the seal.

2、 Handling method

Replace the seal:

Regularly inspect and replace aging seals to ensure good sealing performance. At the same time, when installing new seals, strict adherence to operating procedures should be followed to ensure proper installation.

Correct installation:

When installing the gearbox, ensure that the seals are installed correctly, the bolts are tightened in place, and avoid seal failure caused by incorrect installation angles.

Adjust the oil level:

According to the instruction manual of the reducer, add lubricating oil to the specified oil level range to avoid oil leakage caused by high oil level.

Repair the box:

For gearbox bodies with cracks or damages, timely repair or replacement should be carried out to ensure the integrity and sealing of the casing.

Clean the ventilation holes:

Regularly inspect and clean the ventilation holes of the gearbox to ensure pressure balance inside the box and prevent oil leakage caused by excessive internal pressure.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment