Gearbox Rebuilding & Overhauling
Industrial gearbox rebuilding and overhauling — a complete teardown, measurement and rebuild with new bearings, seals, gears and shafts, tested before it ships back. 24-month warranty.
Industrial Gearbox Rebuilding & Overhauling
A rebuild is not a patch. It is a complete teardown, cleaning and measurement of your gearbox, replacement of every worn part, and reassembly to the unit's original tolerances — so the gearbox that comes back is ready for another full service life, not just another few months.
Rebuilding vs. Overhauling
The two words overlap, and customers use them interchangeably. In our shop, a rebuild usually follows a failure: the unit stopped, broke or wore out, and we restore it. An overhaul is usually planned: the unit still runs, but it is due — seals weeping, bearings noisy, oil dark with metal — and you rebuild it during a shutdown on your schedule, before it fails during production.
Either way, the work is the same: full teardown, measurement, new wear parts, correct reassembly and testing. The difference is timing — and cost. A planned overhaul is almost always cheaper than an emergency rebuild after a catastrophic failure.
- Planned overhauls during shutdowns, before failure
- Failure rebuilds after breakdowns, including rush service
- Obsolete units rebuilt with gears we manufacture in-house
- 24-month warranty on our rebuild work
We have repair experience with Falk, Lufkin, Dodge and Philadelphia Gear gearboxes, among others. We are an independent repair shop, not an authorized agent for any manufacturer.
Our Rebuilding Process — Step by Step
Every gearbox goes through the same eight steps. No shortcuts, no skipped measurements.
1. Inspection
External check on arrival: nameplate data recorded, oil drained and examined, housing checked for cracks, leaks and damage.
2. Disassembly
Complete teardown. Every part is tagged and laid out in order so reassembly is exact — and so nothing is missed.
3. Cleaning
Parts and housing are cleaned of old oil, sludge and metal debris, so inspection shows real wear, not grime.
4. Measurement
Gears, shafts, bearings and housing bores are measured against original tolerances: tooth wear, backlash, shaft journals, bore sizes and fits.
5. Machining
Worn shafts are re-ground or sleeved, housings are line-bored or bushed as needed, and replacement gears are cut in-house when required.
6. New Components
New bearings, seals, gaskets and fasteners throughout, plus new or remanufactured gears, pinions and shafts where measurement calls for them.
7. Reassembly
Rebuilt with correct bearing preload, end play, backlash and gear mesh pattern, using the right lubricants and sealants.
8. Testing
A run check for noise, vibration, heat and leaks before the unit is painted, packed and shipped back to you.
Components We Replace in a Rebuild
Bearings
All rolling-element bearings, with correct fits and preload — the most common failure point in any gearbox.
Seals & Gaskets
Every seal and gasket, with shaft seal surfaces repaired so new seals hold oil in and contaminants out.
Gears & Pinions
Worn, pitted or broken gears replaced or manufactured in-house to match the original tooth form and ratio.
Shafts
Scored, bent or worn shafts repaired, re-ground or made new — including keyways, splines and seal journals.
Housings
Checked for cracks and worn bores; line-bored, bushed or repaired so bearings sit true and gears mesh correctly.
Fasteners & Hardware
Worn bolts, studs, keys and shims replaced as part of the rebuild, not reused past their life.
Turnaround depends on equipment condition, required parts, job complexity and availability. See also industrial gearbox repair and emergency gearbox repair.
Ready to rebuild your gearbox?
Call (714) 204-5167 — pickup & delivery to our shop, nationwide.
Get a Quote on Your Gearbox or Gear
Tell us the brand, model and nameplate information, and what the unit is doing — noise, leaking oil, overheating, lost drive, or stopped completely. We will review it and call you back with the next step.
Pickup & delivery to our Rialto, CA shop is available nationwide. Turnaround depends on equipment condition, required parts, job complexity and availability.