Horsburgh & Scott Gear & Gearbox Repair
Horsburgh & Scott builds and rebuilds the biggest open gearing in America — mill girth gears, pinions, and custom heavy boxes since 1886. We rebuild every Horsburgh & Scott model — published pricing, 8–12 day turnaround, 24–72 hr emergency — and we buy surplus Horsburgh & Scott units for cash.
Horsburgh & Scott repair at a glance
| Product lineswhat we service | Girth gears, pinions, custom drives |
| Typical rebuild costvs 30–60% of new | 18–25% below standard shops |
| Standard turnarounddock to dock | 8–12 business days |
| Emergency serviceline-down rush | 24–72 hours |
| Cash buybacksurplus or failed units | Same-day offers |
Manufacturer base: Cleveland, OH. Send any nameplate — we identify and price every vintage.
Horsburgh & Scott models with published pricing
Ball Mill Girth Gear (up to 40 ft)Published pricing · repair vs new vs cash offer
Kiln Girth Gear & Pinion SetPublished pricing · repair vs new vs cash offer
Mill Pinion AssemblyPublished pricing · repair vs new vs cash offer
Horsburgh & Scott questions
Our girth gear teeth show pitting — do we need a new gear?
Not necessarily. Early-stage pitting on mill girth gears is managed with tooth-flank regrinding and a gear reversal (flip the wear face) — standard practice that buys years. Replacement is only forced when cracks reach the root or the rim. On-site inspection tells you which side of the line you're on. Call (641) 519-6270 for a free teardown quote — or sell us the unit as-is for cash.