Ace Electric Motor & Pump Co. provides expert industrial gearbox repair, rebuilding, and preventive maintenance for manufacturing plants, agricultural operations, HVAC systems, and commercial facilities across California’s Central Valley. As an EASA-accredited service center with a precision machine shop on-site, we restore gearboxes to OEM specifications—reducing your downtime and extending equipment life. We have served the region since 1952.
From emergency breakdowns to scheduled overhauls—trusted gearbox repair backed by 70+ years of hands-on experience.
Industries That Rely on Our Gearbox Repair Services
We understand that gearbox failure means lost production. That’s why Ace Electric Motor & Pump Co. serves a wide range of industries across the Central Valley with fast turnaround and dependable quality.
Manufacturing & Food Processing
Conveyor gearboxes
-
mixer drives, and packaging line reducers keep production moving. When a gearbox fails in a food processing plant, the cost of downtime is measured in spoiled product and missed shipments. We offer expedited repair to get your lines running again.
Agriculture & Irrigation
-
Central Valley farms depend on gearbox-driven irrigation pumps, grain augers, and harvesting equipment. We repair agricultural gearboxes with USDA-compliant lubricants and corrosion-resistant components suited to field conditions.
Water & Wastewater Treatment
-
Clarifier drives, aerator gearboxes, and pump drives in municipal and industrial water treatment facilities require reliable, continuous operation. We work within the maintenance windows your facility schedules.
HVAC & Commercial Buildings
-
Rooftop air handling units, cooling towers, and building ventilation systems use gear reducers that wear over time. We repair and rebuild HVAC gearboxes to restore efficient, quiet operation.
Oil, Gas & Energy
-
From pump jacks to compressor drives, oil and gas operations in the Central Valley depend on gearboxes running under high loads and harsh conditions. We provide field service and shop repair for these demanding applications.
Why Choose Ace Electric for Gearbox Repair?
-
EASA Accredited Since 1952: Our accreditation by the Electrical Apparatus Service Association means every repair meets documented quality standards for workmanship and testing.
-
Precision Machine Shop On-Site: Gear cutting, shaft turning, bore restoration, and custom part manufacturing—all done in-house for faster turnaround and tighter quality control.
-
3rd-Generation Family Business: Over 70 years of hands-on experience means we’ve seen and repaired virtually every gearbox type and failure mode in the field.
-
24/7 Emergency Service: When production stops, call us any time. We dispatch technicians for on-site gearbox diagnosis and field repair across the Central Valley.
-
Full-Service Motor & Pump Expertise: Gearboxes don’t operate in isolation. We also service the electric motors, pumps, and VFDs connected to your gearbox—one shop, one call.
-
Central Valley Coverage: Serving Stockton, Sacramento, Modesto, Tracy, Lodi, Manteca, Turlock, Elk Grove, Folsom, Roseville, Davis, Oakdale, Pleasanton, and Patterson.
FAQ SECTION
Q: How much does industrial gearbox repair cost?
Industrial gearbox repair costs typically range from $800 to $5,000 for small to mid-size gear reducers, and $5,000 to $25,000 or more for large industrial gearboxes requiring extensive gear replacement or custom machining. The final cost depends on gearbox size, type (worm, planetary, helical, or bevel), extent of damage, and whether replacement gears need to be manufactured. At Ace Electric Motor & Pump Co., we provide a free inspection and written estimate before any work begins, so there are no surprises.
Q: How long does gearbox repair take?
Standard gearbox repairs are typically completed in 5 to 10 business days, depending on the scope of work and parts availability. For critical production equipment, we offer emergency and expedited service with turnaround as fast as 48 to 72 hours. On-site field repairs for diagnosis and minor repairs can often be completed same-day.
Q: Should I repair or replace my gearbox?
Repairing is usually the better option when the gearbox housing is structurally sound, replacement gears or bearings are available (or can be manufactured), and the repair cost is less than 50–60% of a new unit. Replacement makes more sense when the housing is cracked or warped beyond repair, the gearbox design is obsolete with no efficiency gains from rebuilding, or repeated failures indicate a fundamental design mismatch for your application. Our technicians assess each gearbox individually and give you an honest recommendation.
Q: What are the most common causes of gearbox failure?
The six most common causes of industrial gearbox failure are: inadequate or contaminated lubrication (the leading cause), bearing fatigue from misalignment or overloading, gear tooth wear or pitting from sustained heavy loads, seal failures that allow contaminant ingress, thermal overload from insufficient cooling, and improper installation or shaft alignment. Regular preventive maintenance—including oil analysis, vibration monitoring, and thermal imaging—can catch most of these issues before they cause a catastrophic failure.
Q: Do you offer on-site gearbox repair?
Yes. Ace Electric Motor & Pump Co. provides 24/7 on-site field service for gearbox diagnosis, minor repairs, alignment, and oil changes. For major rebuilds, we remove the gearbox on-site, transport it to our Stockton shop for precision repair, and reinstall it when the work is complete. Our service area covers the entire Central Valley, including Stockton, Sacramento, Modesto, Tracy, and surrounding communities.
Q: What brands of gearboxes do you repair?
We repair gearboxes from all major manufacturers, including SEW-Eurodrive, Nord, Falk (Rexnord), Dodge, Sumitomo, Winsmith, Boston Gear, Bonfiglioli, Brevini, Flender (Siemens), Hansen, and David Brown Santasalo. We also repair discontinued and legacy gearboxes where original replacement parts are no longer available, using our precision machine shop to manufacture components to OEM specifications.
Q: What does EASA accreditation mean for gearbox repair?
EASA (Electrical Apparatus Service Association) accreditation means that Ace Electric Motor & Pump Co. follows documented quality standards for repair processes, testing procedures, and workmanship. An accredited shop undergoes regular audits and maintains calibrated equipment, trained technicians, and traceable quality records. For customers, this means confidence that your gearbox repair meets industry-recognized standards—not just a generic fix.
Need emergency repair services? Our team is available /7, ready to provide prompt solutions for any urgent issues. Trust us to restore peace of mind whenever emergencies arise. Contact us anytime!
We service major gearbox brands like Siemens, Bonfiglioli, Flender, SEW-Eurodrive, Nord Drivesystems, and Brown Santasalo, ensuring reliable maintenance and support.
Precision tools ensure correct tolerances in gearboxes, enhancing performance and lifespan. High-quality instruments optimize alignment, reducing wear and tear, leading to reliable machinery and lower costs.