Industrial Gearbox Repair
Heavy-duty gearbox repair and rebuilding for plants, mines, mills and process lines across the United States — bearings, seals, shafts and gears replaced, housings checked, and every unit tested before it ships back.
Industrial Gearbox Repair, Done Properly
When a gearbox starts making noise, leaking oil, running hot or losing drive, the cause is rarely one part. We tear the unit down, measure everything against its original tolerances, and rebuild it — bearings, seals, shafts and gears included — so it goes back into service ready to work.
What a Rebuild Actually Fixes
Most gearbox failures trace back to a short list of worn parts: bearings that have lost preload, seals that have hardened and started leaking, shafts scored where the seal rides, and gear teeth pitted, spalled or broken from years of load. We replace what is worn, machine what can be saved, and manufacture replacement gears in-house when a part is obsolete or unavailable.
Every unit is cleaned, inspected and measured before we quote the repair, so you know what is wrong and what it will take to fix it — not a guess from the outside of the housing.
- Bearings & seals: full replacement with correct preload and end play
- Gears & pinions: replaced or manufactured to match the original
- Shafts: repaired, re-ground, sleeved or made new
- Housings: cleaned, checked for cracks and worn bores, line-bored as needed
- Complete overhauls: every wear part addressed in one teardown
- 24-month warranty on our rebuild work
We have repair experience with Falk, Lufkin, Dodge and Philadelphia Gear units, along with Hansen, Flender, Foote-Jones and Sumitomo. We are an independent repair shop — not an authorized agent for any manufacturer — and we work to the unit's original specifications.
Gearbox Types We Repair
One shop, one process: inspect, measure, rebuild, test — whatever the configuration.
Heavy-Duty Gearboxes
High-torque units from mills, crushers and process lines — rebuilt with new bearings, seals and gears.
Industrial Gearbox Rebuilding
Full teardown and rebuild: inspection, measurement, machining, new wear parts, reassembly and testing. See gearbox rebuilding.
Gearbox Overhauling
A planned overhaul before failure — replace wear parts, refresh seals and lubrication, and restore clearances while the line is down on your schedule.
Planetary Gearboxes
Compact, high-ratio sets. We inspect sun, planet and ring gears, carriers and bearings, and replace damaged members.
Parallel Shaft Gearboxes
The workhorse of conveyors and process equipment — shaft alignment, bearing bores and gear mesh checked and corrected.
Helical Gearboxes
Quiet, high-efficiency helical sets. We check tooth contact, backlash and bearings, and replace worn gearing.
Bevel Gearboxes
Straight, spiral and hypoid bevel sets — mesh pattern and backlash set carefully.
Worm Gear Reducers
Worm and wheel sets rebuilt with new bronze wheels, worms and bearings. See speed reducer repair.
Shaft Mounted Gearboxes
Shaft-mounted reducers removed, rebuilt and returned ready to slide back on — including torque arm and bushing condition.
Inline Gearboxes
Inline and coaxial units where motor and output share an axis; we check concentricity, bearing fit and gear alignment.
Vertical Gearboxes
Vertical-shaft units, including thrust bearing condition and lubrication — critical when gravity works against the oil.
Extruder Gearboxes
High-thrust extruder drives with worn thrust bearings and gearing; we restore thrust capacity and check the output shaft.
Mixer Gearboxes
Mixer and agitator drives that see shock loads and reversing torque — rebuilt for that duty.
Conveyor Gearboxes
Conveyor drive reducers rebuilt fast, because a conveyor down is a line down. See industries we serve.
Mill Drive Gearboxes
Mill and grinding drives under heavy, continuous load — teeth, bearings and housings inspected for fatigue.
Crane & Hoist Gearboxes
Hoist and travel drives where safety depends on the brake and gearing — inspected thoroughly.
Pump Drive Gearboxes
Gearboxes driving pumps, including speed increasers and step-up drives — checked for alignment, vibration and seal leaks.
Marine Gearboxes
Marine reduction gears with corrosion and seal concerns; cleaned, inspected and rebuilt to handle the marine environment.
Mining Gearboxes
Mining drives that run dirty, overloaded and around the clock — rebuilt with heavy-duty bearings and seals.
Rolling Mill Gearboxes
Rolling mill drives under extreme torque — teeth, shafts and housings checked for cracks.
Agitator Gearboxes
Agitator drives with long output shafts and side loads — shaft, bearings and seals checked.
Double & Triple Reduction
Multi-stage reducers: every stage inspected, backlash set stage by stage.
Custom Gearboxes
One-off and modified units — measured, documented and rebuilt to the configuration you actually have.
Reverse Engineering
No drawings, no parts, no problem: we measure the worn gears and shafts and manufacture replacements. See gear manufacturing.
How a Gearbox Repair Works
Ship the unit to our Rialto, CA shop — pickup & delivery is available nationwide — or drop it off. We inspect and measure it, tell you what it needs, rebuild it, and test it before it leaves.
1. Inspect & Measure
Teardown, cleaning, and measurement of gears, shafts, bearings and housings against original tolerances.
2. Rebuild
New bearings and seals, repaired or replaced shafts, and gears replaced or manufactured in-house.
3. Test & Ship
Reassembly with correct backlash and preload, a run check, then delivery back to you — backed by a 24-month warranty.
Turnaround depends on equipment condition, required parts, job complexity and availability. Need it fast? See emergency gearbox repair — 24/7 service with 24–72 hour rush repairs on qualifying jobs.
Gearbox down? Call now.
24/7 emergency service — 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.