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24-Hour Rush Repair
Industrial gearbox bench · Fontana, CA
David Brown Gearbox Repair in Fontana
David Brown gearboxes — from the long-running British David Brown lines to today's David Brown Santasalo industrial drives — power mixers, conveyors, cranes, extruders and process machinery, and plenty of the older units have outlived their factory parts pipeline. Our Fontana shop rebuilds David Brown gearboxes in-house, including the worm gear sets these drives are known for: teardown, measurement, and manufacture of replacement worm wheels, worms and helical gearing in our own gear shop.
Industrial gearbox bench · Fontana, CA
Worm, helical and bevel David Brown drives
Worm drives live or die on mesh geometry — a worn worm wheel or a wheel cut to the wrong profile runs hot, noisy and short-lived. We measure the existing set at teardown, work out the original geometry, and cut the replacement to match, then set mesh and clearances on assembly. The same bench handles David Brown helical and bevel-helical units across their industrial ranges: bearings and seals renewed, shafts and housing bores checked and repaired, gearing replaced where wear has gone past limits.
Brands we serviceDavid BrownHansenFlenderFalkPhiladelphia GearCone DriveDodge
David Brown Gearbox Repair in Fontana · Fontana, CA
David Brown worm and helical gearbox gearing rebuilt at LA Trucks and Tractors in Fontana
Obsolete on paper is not obsolete on our bench
Many David Brown units in service today were installed decades ago and are still mechanically sound everywhere except the gearing — exactly the situation a gear-cutting shop exists for. Instead of re-engineering the machine around a modern replacement drive, the existing unit is rebuilt around its own housing and footprint with new gearing made to the original design. Regular hours Monday–Friday 6 AM–5 PM; rush service 24 hours a day, 365 days a year, with free quotes and free pick-up and delivery — you talk directly with John Clark.
- David Brown worm gearbox rebuilding
- Worm wheel and worm manufacture
- Helical and bevel-helical drive repair
- Replacement gears cut for obsolete units
- Bearing, seal and shaft renewal
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 cut a new worm wheel for a David Brown gearbox?
Yes. Worm gearing is a specialty of this shop — we measure the worn set, derive the original geometry, and manufacture the wheel and worm to match before setting the mesh on assembly.
Is an old David Brown drive worth rebuilding?
Very often. If the housing, shafts and bores are sound, new gearing restores the drive on its original footprint for far less disruption than replacing the unit and reworking its mounts.
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.