Contract crusher
Kimberley Mobile Jaw
Mobile seat notes that travelled between two sites.
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Jaw plant working between Kimberley sites
A contract crusher operating in the Kimberley area was moving their mobile jaw plant back and forth between two different sites. This meant long bakkie trips over gravel roads, plenty of Eskom power cuts, and the usual dust and vibration of the Northern Cape. The jaw crusher had started to show uneven wear on the swing and fixed jaw plates, especially at the ends. The closed side setting had also crept out of spec by the time it returned from the second site. That, combined with a tight campaign schedule, pushed the team to look for a more reliable wear-parts programme.
Jaw plate change and setup
We supplied a set of heavy-duty austenitic manganese jaw plates, finished to OEM profile, with proper lifting lugs and identification marks for correct orientation. Our technician travelled to site, confirming with the plant team that lockout and isolation had been done. The old plates were removed using a certified lifting beam. The seating areas were cleaned, with attention paid to removing any compacted fines that could cause seating issues or affect nip angle. Jaw plates were torqued up using the correct sequence, per OEM guidance. The closed side setting was measured and reset to restore the intended feed opening, and the cheek plates were checked for wear. We supplied fresh liner bolts, noting that old bolts had stretched after repeated campaigns and could no longer hold proper torque.
- Supplied OEM-profile jaw plates with lifting lugs
- Supervised safe lockout and isolation
- Reset closed side setting after installation
- Checked and replaced worn liner bolts
Aftercare and lessons for the next move
After the change, the plant crew implemented a regular closed side setting check at the start of each shift, watching for signs of nip angle shift. Wear profiling was simplified by marking the plates before installation, letting operators spot wear patterns before they turned into bigger problems. We recommended a more consistent feed distribution at both sites to reduce uneven wear. Next time, we would also supply a set of spare toggle plates to cover for unexpected tramp events, especially when the unit is moving between sites and could encounter foreign objects. The team kept a log of plate changes, torque checks, and campaign hours, making future planning easier and reducing the risk of running plates beyond safe limits.
- Regular closed side setting checks
- Plate wear profiling and recording
- Planned toggle plate stock for future campaigns
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