Pick-up
Coordinate free equipment or component pick-up when applicable.
Industrial gearbox bench · Fontana, CA
Hansen industrial gear units — the Hansen Transmissions parallel-shaft and right-angle drives — sit under cooling towers, mixers, extruders, cranes and heavy conveyors, built for decades of continuous duty. When one finally needs more than oil and seals, our Fontana shop does the complete job in-house: teardown, measurement, rebuild, and manufacture of replacement gears and shafts for Hansen units that factory support no longer reaches quickly.
Industrial gearbox bench · Fontana, CA
We rebuild Hansen parallel-shaft and bevel gear units across their industrial ranges, renewing bearings, seals, shafts and gearing to the clearances the drive was built with. Every gear is measured at teardown; gearing worn beyond limits is re-cut or manufactured new in our own machine shop, matched to the original geometry so the rebuilt unit drops back onto its existing foundation and coupling without rework.

Hansen industrial gearbox gearing rebuilt at LA Trucks and Tractors in Fontana
Hansen drives earn their reputation on applications that never stop: cooling-tower fans, process mixers, plant conveyors. A rebuild for that duty is not a seal kit and a coat of paint — it is gearing measured tooth by tooth, housings checked for the bore wear that misaligns a shaft, and clearances set back to build spec. That is the work our bench does every day. Regular hours Monday–Friday 6 AM–5 PM; rush and emergency repair runs 24 hours a day, 365 days a year, with free quotes and free pick-up and delivery.
A clear path from the first call to a tested component or machine returned to work.
Coordinate free equipment or component pick-up when applicable.
Disassemble and evaluate the complete failure.
Document condition and findings for a clear repair conversation.
Define the recommended work and quote before proceeding.
Confirm scope, urgency and the practical path forward.
Machine, weld, rebuild or reverse engineer required components.
Verify operation and workmanship before release.
Return the completed component or equipment to service.
Where factory gearing is unavailable or too slow, we manufacture the gears and shafts ourselves from the original parts — that is the core of our gear shop.
Yes — cooling-tower fan drives are regular work here, from bearing and seal renewal to full gearing rebuilds.
Schedule service or open a repair order
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.