Previous Jobs

The shaft stub on both ends of this agricultural roller had worn beyond tolerance, causing the bearings to run loose and the roller to become unserviceable. The repair involved stripping the complete assembly, building up the worn shaft journals with weld, dressing back to size, and fitting new bearing units and housings throughout. Both ends of the roller were repaired and the machine returned to service.

Replacing the full set of roller discs was assessed but ruled out on cost grounds, as a new set would have been uneconomical given the overall condition of the machine. Instead, custom spacers were designed and 3D printed in nylon filament to take up the lateral tolerance and any wear present in the existing disc bores. Nylon was selected for its high abrasion resistance, toughness and suitability for this type of application. The spacers were fitted to the shaft ends to eliminate any play, bringing the assembly back within acceptable tolerances without the cost of a full disc replacement.