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24-Hour Rush Repair
Gearbox repair · Plastics plants
Gearbox Repair for Plastics Plants in Fontana
Plastics plants live or die on their extruder gearboxes — and on pelletizer, puller, mixer and injection-molding drives that run hot and long across the Inland Empire. When a drive starts pitting, overheating or losing its thrust bearing, LA Trucks and Tractors rebuilds it at our Fontana shop at 14166 Whittram Ave: measured teardown, gears cut in-house when replacements are discontinued, and a run-checked box back on the line.
Gearbox repair · Plastics plants
How plastics plant gearboxes wear — and what we do about it
The plastics drives that reach our bench most often show extruder thrust-bearing wear from sustained screw pressure, gear pitting at low speed under high torque, and seals hardened by years beside a hot barrel. At teardown we record backlash, tooth contact, bearing condition, shaft wear and housing bores before anything is quoted — then renew what the measurements condemn, cut replacement gearing in-house where needed, and reset screw clearances to specification before the run-check.
Brands we servicePlastics plantsFalkFlenderSEW-EurodriveHansenNordSumitomo
Gearbox Repair for Plastics 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.
- Extruder, pelletizer and molding drive rebuilds
- Thrust assemblies renewed before catastrophic failure
- Replacement gears manufactured in-house, including discontinued gears
- 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 an extruder gearbox before the thrust bearing fails?
Yes — that is the right time to do it. Thrust assemblies are renewed, pitted gearing measured and re-cut in-house where needed, and clearances reset to specification.
Do you work on discontinued extruder drives?
Yes — manufacture from measurements is standard practice here, so a discontinued drive is not automatically scrap.
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.