Maintenance of a large reduction gearbox made overseas, in which spiral bevel gears are used. A pinion shaft with a broken gear section was manufactured, and a spiral bevel gear, which is the mating part of the pinion shaft, was manufactured, and the drive parts were newly manufactured. The mating parts where bearings and oil seals are inserted were repaired, and parts that did not conform to standards were modified to reduce costs. The overseas manufacturer also went out of business due to a merger, so without a company that could service the machine, it had to be scrapped.
Receiving and disassembly
Inspecting the inside of the reduction gear
Having completed disassembly, each component was inspected. Various pieces of information, such as the intended use of the machine, the surrounding environment and the way the load is applied, are synthesised to determine which parts need repair.
Spiral bevel gear production, condition of parts after repair
Start of assembly
Don’t give up even when repairs are not possible
KBK Engineering has a track record of manufacturing components in Japan, procuring consumable parts from overseas and modifying them to domestic specifications so that machines can continue to be used without being scrapped, even if they are made overseas. If your machine is at a crossroads between scrapping and survival, for example because a gear tooth is missing or parts are not available from overseas, please contact us.