Crusher Swing Jaw Repair Case Study

Customer Challenge

The bearing on the swing jaw of a key piece of operational equipment in a large quarry was failing too regularly during operation. Frequent downtime for crusher repairs had failed to resolve the issues.

DMMeng’s Innovative Solution

Repeated failures indicated that the root cause had not been identified, and hence past remediation attempts had not resolved the problem. DMMeng was engaged to perform a thorough technical examination of the swing jaw bearing surfaces, including accurate measurement of critical clearances. The deep engineering expertise of our team enabled us to identify that the thermal growth clearances were incorrectly set and the bearing faces were not parallel. This resulted in the housing being out of round, leading to premature failure.

Service Delivered

The correct thermal growth clearances were reestablished, the bearing faces were rebored and aligned in parallel, and the housing was installed correctly. These tasks were completed in the DMMeng workshop. The jaw was then reassembled, transported to site and safely installed.

Customer Benefit

Crusher uptime and reliability were reestablished, delivering major productivity gains for the operator and significant cost savings on crusher swing jaw repair, labour and bearing replacements.