Servicing of worm wheel reducers - KBK Engineering

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Servicing of worm wheel reducers

Wormwheel newly manufactured and restored

A request was received to service a reduction gearbox used for lifting. When disassembled, the worm wheel teeth were worn out and could no longer rotate. The bearing mating part was also cracked, so the casting case was repaired and the worm wheel was newly manufactured, so that the machine could be used again.

Commencement of maintenance

分解前の様子
Bearings are badly fouled

Check condition of components

By properly repairing the mating parts, which are important for rotation, and the inside of the case, which is important for transport capacity, even large machines can be brought back to their original The side lid was damaged, one of the two was missing, the shaft was sound but the case bearing mating was cracked and the worm wheel, which is important for the drive, had worn out teeth and was not re-usable..

Checking the worm wheel shows tooth thinning. The material is soft to begin with, but years of use and loading have made it impossible to re-use
The same aspect is present all round
Cracks in the bearing section of the cast case
There are cracks all along the length of the mating area

Gear production, repair of case cracks

The repaired parts were brought together and assembled. Once assembled, the vehicle was painted to coThe gears are examined in various ways, the same gears are manufactured, and then fitted to a diverted gear boss to stop it from turning. Cracks in the case are repaired, and then the mating parts are repaired to ensure that the original functionality is maintained.

Worm wheels are reverse engineered
The cracks in the case have been properly treated to prevent further progression, and the mating parts have been repaired

Servicing complete

Painted and maintenance completed.

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