Cement Mill Gearbox Repair, Kiln Drive Gears and Plant Reducers
Cement and building-materials plants run continuously on drives that are often older than the current ownership. We manufacture replacement gearing for mills, kilns and handling equipment, and rebuild the gearboxes.
Cement, aggregates and gypsum drives we work on
High dust loading, continuous duty and very large slow-speed gearing make this sector unusually dependent on the original drive surviving.
- Raw mill and cement mill centre drives and girth gear pinions
- Rotary kiln main drive gearing and auxiliary drives
- Vertical roller mill gearboxes and classifier drives
- Clinker cooler drives and grate reducers
- Crusher and hammer mill drives
- Bucket elevator head shafts and drive gearing
- Pan conveyor, screw conveyor and air-slide drives
- Packing plant and palletiser gearboxes
- Gypsum board line drives and calciner gearing
- Stacker and reclaimer travel and slew drives
Mill and kiln gearing
Girth gear pinions, centre-drive gearing and kiln drive sets manufactured to the existing centres and measured tooth geometry.
Gearbox rebuild
Strip, inspect, report and rebuild. Dust ingress damage is usually confined to gearing and bearings, so housings normally stay in service.
Obsolete drive support
For units whose maker has withdrawn support, the internals are reverse engineered from the worn parts.
What usually arrives from a cement plant
Abrasive dust and continuous duty produce a short, predictable list.
| What fails | What we supply |
|---|---|
| Worn mill girth gear pinion | Replacement pinion cut to the existing girth gear |
| Kiln drive gearbox beyond repair limits | Rebuild with new gearing and restored journals |
| Clinker cooler drive failure | Replacement gear set and shafts |
| Bucket elevator head shaft cracked | Shaft machined complete with the original fits |
| Screw conveyor drive with no parts available | Internals reverse engineered from the removed unit |
| Stacker slew drive pinion damage | Replacement pinion to the measured geometry |
Working from no drawings
Most of the drive components we are asked for are no longer manufactured, and the original drawings are long gone. We reverse engineer from the worn part itself: the component is measured, the tooth geometry and fits are established, material is confirmed, and a replacement is cut to suit the existing housing, shafts and bearings so nothing else in the assembly has to change.
Where a gear has failed because of a design limitation rather than wear, we will say so and propose the change rather than reproduce the fault.
Quality and documentation
Euro Gear operates an ISO 9001:2015 certified quality management system. EN 10204 3.1 material certification is available on request, with mill traceability. Components bound for the United Kingdom or European Union ship as partly completed machinery with a Declaration of Incorporation.
Lead times
We are built around planned work: shutdowns, turnarounds and scheduled overhauls booked in advance, where the component has to be right and on site for a known date. Tell us the outage date and we will tell you honestly whether we can meet it. We do not offer field service or emergency breakdown attendance.
Common questions
- Can you cut a girth gear pinion to our existing mill gear?
- Yes. We measure the girth gear and the worn pinion to establish geometry and centre distance, then cut a replacement to suit.
- Our kiln drive is from a maker that no longer trades. Can it be rebuilt?
- Usually yes. If the housing and shafts are sound, the internals can be reverse engineered and the unit returned to service.
- Can you work to a planned kiln outage?
- Yes, and that is the work we are built for. Give us the outage date at enquiry.
- Do you supply complete new gearboxes?
- We manufacture gearing, shafts and assemblies to order. Whether a complete new unit or a rebuild is the better answer depends on the housing, and the inspection report will say.
- Do you attend site?
- No. We are a manufacturing shop and do not offer field service.
Send us the part
A photograph of the nameplate and the worn component is usually enough for us to tell you whether we can help. Drawings are welcome but not required.