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24-Hour Rush Repair
Gearbox repair · Steel plants
Gearbox Repair for Steel Plants in Fontana
Steel plants — including the mills and processors right here in Fontana's industrial corridor — punish gearboxes like almost nothing else: reversing mill torque, crane hoist cycles, scale and heat. When a mill, crane or conveyor drive wears past its limit, LA Trucks and Tractors rebuilds it at 14166 Whittram Ave, Fontana: large gearing measured at teardown, fatigued teeth renewed by in-house gear cutting, and the finished box run-checked before it returns to the floor.
Gearbox repair · Steel plants
How steel plant gearboxes wear — and what we do about it
Steel-plant drives that reach our bench most often show mill-drive tooth fatigue from reversing torque, bearing brinelling under peak loads, hoist gear wear from constant lift cycles, and coupling-side shaft fretting on older iron. At teardown we record backlash, contact patterns, bearing condition, shaft wear and housing bores before anything is quoted — then renew bearings and seals as a set, restore bearing seats, and cut replacement gearing in-house when the original is worn past saving or discontinued.
Brands we serviceSteel plantsFalkFlenderSEW-EurodriveHansenNordSumitomo
Gearbox Repair for Steel Plants in Fontana · Fontana, CAOne Fontana shop for gears, machining and rebuilds
Gear cutting, machining, rebuilding and testing all happen at 14166 Whittram Ave, Fontana, CA 92335. Regular hours are Monday to Friday, 6 AM to 5 PM, with 24-hour rush and emergency service every day of the year. Talk to John Clark's team on (800) 821-3404 or (949) 400-2937, or write to [email protected], for a free quote.
- Mill, crane and conveyor drive rebuilds for steel plants
- Large replacement gears manufactured in-house
- Bearing seats and shafts restored from measurements
- Backlash and preload set and run-checked before release
- 24-hour rush and emergency gearbox service, 365 days
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 rebuild a large mill drive with no drawings?
Yes — custom work is measured as-found: gears are reverse-measured, replacements cut in-house to the measured geometry, and housing condition corrected before assembly.
Do you rebuild overhead crane gearboxes?
Yes — hoist and travel drives are measured, renewed and run-checked, with backlash reset so loads lift and hold without drift.
Do you offer rush repair?
Yes — 24-hour rush and emergency service runs every day of the year. Call (800) 821-3404 or (949) 400-2937.
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.