Pick-up
Coordinate free equipment or component pick-up when applicable.
24-Hour Rush Repair
Gear shop · Fontana, CA
Gear & Gearbox Repair in Fontana
When a gearbox fails, the whole line, truck or machine behind it stops. Our Fontana gear shop rebuilds industrial gearboxes and driveline components, manufactures replacement gears and shafts in-house, and reverse engineers obsolete parts that nobody sells anymore — so a dead gearbox is a repair, not a retirement.
Gear shop · Fontana, CA
A real gear shop, not a parts-swapping bench
We rebuild industrial gearboxes, differentials and transmissions; we cut and re-cut gears, manufacture shafts, restore housings and bearing fits, and rebuild planetary and final drives. Components are disassembled, evaluated and documented with photos and video before you ever see a quote.
For plants running older equipment, reverse engineering is often the whole ballgame: if the manufacturer discontinued the gear, we measure the failed part and manufacture a replacement to spec.
Brands we serviceFalkEatonDana SpicerAllisonFullerMeritorFlenderSEW-EurodriveSumitomoCaterpillar
Gear & Gearbox Repair in Fontana · Fontana, CAGear work for Fontana and Southern California industry
Fontana’s steel, aggregate, recycling and manufacturing plants run gearboxes hard, and Southern California’s industrial base ships components to shops that can actually cut gears. Ours can — in-house, at 14166 Whittram Ave, with regular hours Monday–Friday 6 AM–5 PM and 24-hour rush service every day of the year. Free pick-up, delivery and quotes.
- Industrial gearbox rebuilding
- Gear manufacturing and re-cutting
- Shaft manufacturing and repair
- Differential and transmission rebuilding
- Planetary and final-drive repair
- Reverse engineering of obsolete gears
Our 8-step repair process
A clear path from the first call to a tested component or machine returned to work.
Inspection
Disassemble and evaluate the complete failure.
Photos & video
Document condition and findings for a clear repair conversation.
Repair quote
Define the recommended work and quote before proceeding.
Approval
Confirm scope, urgency and the practical path forward.
Manufacturing
Machine, weld, rebuild or reverse engineer required components.
Testing
Verify operation and workmanship before release.
Shipment
Return the completed component or equipment to service.
Frequently asked questions
Can you make a gear that is no longer sold?
Yes. Reverse engineering obsolete parts is a core part of this shop — we measure the failed gear and manufacture a replacement.
Do you rebuild differentials and transmissions too?
Yes — differentials, manual and automatic transmissions, planetary drives and final drives for trucks and heavy equipment.
How is the price set?
After teardown and inspection, with photos and video of the failure documented. The quote comes before the work and is free.
Do you take gear work from outside Fontana?
Yes — components are shipped to us from across Southern California and beyond. Free pick-up and delivery apply when applicable.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
Request a service call.
Include the make, model, symptoms, location, urgency and preferred service time. Your details open in a text to John so you can review them before sending.