The sprockets that had been used previously had a short lifespan of just seven months, so we wanted to reduce the amount of work required for replacement while also lengthening their lifespan to reduce the frequency of replacement itself.

The tooth replacement ring type allows you to replace only the teeth without removing the sprocket from the shaft, and is equipped with Indicator pins (replacement notification mark), reducing the labor required to inspect and replace the sprocket.

In addition to the highly wear-resistant thermal spray coating (*), tests were also conducted on sprockets coated with epoxy resin paint as a corrosion prevention measure. This extended the lifespan to two years, more than double the previous model.

Furthermore, by using the shaft assembly service, the sprocket was delivered already assembled, which made it easy to install on the conveyor.

*Special hardening treatment has been applied to dramatically extend the wear life.

Replacing sprockets for bucket elevators requires high-altitude work, so achieving a longer life reduces the frequency of replacement, which is also very helpful from a safety perspective.

We are also considering replacing other lines in due course.