Mill Pinion Assembly Repair, Price & Specs
Forged pinion shaft assembly · ratios custom · mill drives. Every number you need before you commit: new, wholesale, used, scrap, competitor repair estimates — and our price, cheaper with a shorter lead time. Or sell your surplus Mill Pinion Assembly for cash today.
Have this unit? Snap the nameplate for an instant quote →
Mill Pinion Assembly — full price & lead-time picture
| New / retail (OEM list)new unit, factory order | $42,000–$180,000 |
| Wholesale / dealervolume or distributor pricing | $33,600–$147,600 |
| Used (tested, working)secondhand market range | $16,800–$129,600 |
| Scrap valueweight-based, changes daily | $765–$1,870 |
Researched estimates anchored to OEM list pricing and live surplus-market data; new-unit factory lead time commonly runs 16–30 weeks for comparison. Send your nameplate for a confirmed number.
Why repair your Mill Pinion Assembly with us
Real numbers before teardown
Most shops quote only after your unit is in pieces on their bench. We publish the whole market — new, used, scrap, competitor repair — up front, so you negotiate from strength.
Cheaper and faster
Our network rate beats standard shop pricing by roughly 18–25% on the Mill Pinion Assembly, with turnaround 2–3 days shorter — and 24–72 hour emergency rush when the line is down.
Two-way market maker
If repair isn't the smart move we say so, buy your unit for cash, and can supply a tested used replacement. No other gear shop gives you all three exits.
20+ years of industrial iron
Industrial Surplus World has bought, sold, and rebuilt Horsburgh & Scott equipment for decades — grinding mills drives are daily work, not an experiment.
About the Mill Pinion Assembly
The Mill Pinion Assembly is a forged pinion shaft assembly from the Girth gears, pinions, custom drives line, rated mill drives across ratios of custom, and most commonly found on grinding mills. Horsburgh & Scott builds and rebuilds the biggest open gearing in America — mill girth gears, pinions, and custom heavy boxes since 1886.
When a Mill Pinion Assembly fails, the real decision is economic: a new unit lists at $42,000–$180,000 with a 16–30 week factory queue, a tested used unit trades at $16,800–$129,600 when you can find one, and a standard shop rebuild runs $19,300–$108,000 over 8–16 weeks. Our in-house network rate of $15,100–$88,600 in 4–10 weeks beats all of those paths on total cost of downtime — and if the unit is beyond economic repair, its scrap weight alone is worth $765–$1,870, while we'll pay $2,020–$31,100 for the core as-is.
Typical failure modes on this family are bearing wear, shaft-seal leakage, and tooth-surface distress from degraded or contaminated oil. A correct rebuild means full teardown, hot-tank cleaning, magnetic-particle inspection of all gearing, verification of bearing-bore tolerances, all-new bearings, seals, shims and gaskets, reassembly to factory clearances, and a loaded run-test with warranty up to 24 months. Done right, it restores full service life at a fraction of replacement cost.
Mill Pinion Assembly specifications
| Brand / line | Horsburgh & Scott — Girth gears, pinions, custom drives |
| Model / part number | Mill Pinion Assembly |
| Type | Forged pinion shaft assembly |
| Nominal ratios | custom |
| Power / duty | mill drives |
| Approx. weight | 8,500 lb |
| Typical applications | grinding mills |
| Manufacturer base | Cleveland, OH |
Confirm exact ratio and rating from your nameplate — we service and buy all configurations of the Mill Pinion Assembly.
What a Mill Pinion Assembly rebuild includes
Teardown & clean
Full disassembly, hot-tank strip, oil passages cleared.
Inspect & magnaflux
All gearing NDT-checked for hidden cracks; bores measured.
New wear parts
All-new bearings, seals, shims, gaskets; seal surfaces reground.
Assemble & run-test
Set to factory clearances, painted, loaded run-test, warranty.