Maximise Output. Minimise Plant Downtime.
Specialist on-site machining and repair services for mining, quarrying, cement and aggregates plant
Metalock Engineering provides precision on-site machining, repair, metrology and engineering support for crushers, mills, kilns, excavators and associated heavy plant.
From planned shutdowns and refurbishment projects to emergency breakdowns, we help operators and OEMs recover worn or damaged equipment without the delay, logistics and cost of unnecessary removal or replacement.
Our group has supported mining, quarrying, cement and aggregates operations for over 70 years, providing an around-the-clock, worldwide engineering response.
Specialist Mining and Quarrying Services
A complete range of on-site engineering services for production-critical plant and machinery.
On-Site Machining and Shaft Recovery
- Orbital machining and grinding of crusher, mill and drive-shaft journals
- Kiln tyre and support-roller regrinding
- Rotary-table and slew-ring location-face machining
- Machinery bedplate milling, flat and level
- Gearbox line boring and flange machining
- Excavator, dragline and bucket-wheel excavator machining support
Repairs and Restoration
- Cold Metalock repairs to cracked cast-iron and cast-steel components
- Girth-wheel and crusher gear-tooth replacement
- Welding repairs to kiln tyres, support rollers and associated plant
Metrology and Alignment
- Laser tracking and alignment surveys
- 3D scanning and reverse engineering
- Pre- and post-machining laser inspection
Supporting the Full Minerals Processing Sector
Our teams support operators, maintenance providers and OEMs across:
- Open-cast mining and quarrying
- Cement manufacturing
- Aggregates and crushing plants
- Mineral-processing facilities
- Bulk-handling and port equipment
Rapid Mobilisation. Proven Delivery.
Every hour of lost production matters. Our teams mobilise globally, integrate into shutdown programmes and carry out precision work in demanding plant environments.
We bring proven experience in:
- Planned shutdowns and kiln outages
- Emergency breakdown response
- In-situ shaft and journal recovery
- Confined and operational environments
- Repairs completed without removing major plant from site
Extend Plant Life. Control Repair Costs.
Our engineers develop practical in-situ solutions for large or difficult-to-remove equipment. Recovering the existing component can shorten the shutdown, remove complex lifting and transport requirements, and avoid the capital cost and lead time of replacement.
Talk to a Mining and Quarrying Specialist
Planning a shutdown, managing a refurbishment or dealing with a breakdown? Tell us which item of plant is affected and what has happened. Our team will review the requirement and identify the most practical repair approach.
- Discuss an urgent breakdown or planned repair
- Request technical capability information
- Share photographs, drawings or equipment details
Send us the information you have, even if the full scope is not yet confirmed.
Submit an Enquiry
Mining and Quarrying Projects Delivered Worldwide
Forth Ports – Cement Unloader Slew Ring and Lifting Rams
Metalock machined the upper and lower slew-ring faces on a 20-year-old cement unloader and rebored three pairs of worn hydraulic lifting-ram link locations.
The 3.28-metre lower ring was machined flat to within ±0.02mm and verified by laser, allowing the new slew ring to be installed and the unloader returned to efficient use.
Lafarge Cement – Mill Journal Shaft Restoration
A 914mm diameter mill journal was severely scored after a white-metal bearing failure. Removing it from the enclosed mill building would have required part of the roof to be opened.
Metalock recovered the journal in situ using orbital turning and polishing, completing the work in less time than dismantling alone would have taken. The mill was successfully recommissioned with a new bearing machined to suit.
Cement Plant – 8,000mm Gear Wheel Repair
Metalock Engineering Germany repaired a cracked segment in an 8,000mm diameter cement-plant gear wheel, reconstructing the damaged section instead of replacing the complete wheel.