Speed Reducer Repair
Speed reducer and speed increaser repair — worm, helical, parallel shaft and planetary reducers rebuilt with new bearings, seals, shafts and gears, backed by a 24-month warranty.
Speed Reducers — and Speed Increasers — Rebuilt Right
A speed reducer takes a fast motor and turns it into slow, high-torque output for a conveyor, mixer, pump or mill. A speed increaser does the opposite, stepping a slow input up to drive a pump or fan at speed. Either way, the gearing, bearings and seals inside see constant load — and when they wear, you get noise, heat, backlash and lost output.
Speed Reducer Repair
We repair worm gear reducers, helical reducers, parallel shaft reducers, shaft mounted reducers and planetary reducers. Each type fails a little differently: worm reducers wear the bronze wheel and lose efficiency; helical and parallel shaft units wear bearings and lose gear mesh; planetary units wear planet bearings and ring gears. We tear the unit down, measure every stage, and replace what is worn — bearings, seals, shafts and gears — then set backlash and preload correctly on reassembly.
We have repair experience with reducers from Falk, Dodge, Lufkin and Philadelphia Gear, among others. We are an independent repair shop, not an authorized agent for any manufacturer.
- Worm gear reducers: new bronze wheels, worms, bearings and seals
- Helical & parallel shaft: gear mesh, backlash and bearing bores checked
- Shaft mounted: bushings, torque arms and backstops inspected
- Planetary: sun, planet and ring gears, carriers and bearings
- Multi-stage: every stage measured, backlash set stage by stage
- 24-month warranty on our rebuild work
Speed Increaser Repair
Speed increasers — step-up gearboxes — run at high output speeds, so bearing condition and balance matter even more than in a reducer. A worn bearing at increaser speeds can destroy a gear set in hours. We inspect increasers used on pump drives, fan drives and generator drives, replace bearings and seals, check gear teeth for pitting and fatigue, and verify shaft condition and alignment surfaces before the unit goes back.
When to Repair vs. Replace
A reducer is usually worth rebuilding when the housing is sound and the gearing is available or can be manufactured. It is worth replacing when the housing is cracked through a bearing bore or the gearing is a one-off that cannot be reproduced economically. We will tell you which one you have after inspection — before you spend money on either path.
If your reducer is obsolete and parts are unavailable, our gear manufacturing shop can reverse-engineer and cut replacement gears, worms and wheels from the worn originals.
- Worm wheels: re-cut in bronze to match the original worm
- Helical gears: manufactured to match ratio, center distance and tooth form
- Shafts & pinions: repaired or made new
- Seals: replaced, with shaft surfaces repaired so they hold
- Testing: run check for noise, heat and leaks before shipping
Turnaround depends on equipment condition, required parts, job complexity and availability. Rush service is available — see emergency gearbox repair.
Common Reducer Problems We Fix
Excess Backlash
Worn gear teeth and bearings let the output shaft rock. We measure it, find the worn stage, and restore proper clearances.
Overheating
Often low or contaminated oil, worn bearings, or a worm set that has lost its mesh. We find the cause, not just the symptom.
Oil Leaks
Hardened seals, scored shafts and worn housings. New seals, repaired shaft surfaces, and a housing check that holds.
Reducer noisy, hot or leaking? Call now.
Speed reducer & increaser repair — pickup & delivery nationwide. (714) 204-5167.
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.