Chemical Processing Gearbox & Pump Repair
Mixer, agitator and process pump drives rebuilt for corrosive service and continuous duty — with emergency pickup when a reactor is down.
Gearbox & Pump Repair for Chemical Processing
Rebuilt at our Rialto, CA shop.
Chemical plants run continuous processes where a failed agitator, mixer or pump can force a shutdown of a whole train, and where the equipment itself faces corrosion, chemical attack and high temperatures. Repairs need the right materials, the right seals and a clear record of what was done. American Gearbox Repair rebuilds chemical processing gearboxes and pumps at our shop in Rialto, California, serving chemical plants across California and nationwide by pickup, delivery and shipped-in repair.
We rebuild drives and pumps for reactors, mixers, blending, conveying and transfer service. Each unit is inspected, measured and quoted before work starts, and rebuilt units are covered by our 24-month warranty. Tell us the service and the fluids involved, and we will select seals and materials suited to the duty.
Equipment We Repair in Chemical Processing
- Agitator and reactor drives — gearboxes on top-entry and side-entry agitators, rebuilt for continuous duty, shaft deflection and seal condition.
- Mixer and blender gearboxes — drives on batch and continuous mixers handling viscous and abrasive products.
- Extruder and compounding drives — high-torque gearboxes where gear and thrust-bearing condition decides reliability.
- Conveyor and feeder drives — gearboxes moving raw materials, intermediates and finished product.
- Process and transfer pumps — centrifugal and positive-displacement pumps for corrosive, viscous and abrasive fluids.
- Hydraulic cylinders — cylinders on presses, lifts and handling equipment in the plant.
Common Failures We See
- Corrosion of housings, shafts and fasteners — from chemical exposure and washdown.
- Seal failure and leakage — chemical attack on seals, and shaft wear at the seal surface.
- Bearing failure from contamination — process fluid or wash water getting into the gearbox.
- Gear wear from high torque and viscosity — heavy, variable loads on mixer and extruder drives.
- Pump corrosion, erosion and seal wear — from aggressive fluids, solids and cavitation.
Repair & Rebuilding Services
- Complete gearbox rebuilding — teardown, cleaning, inspection and rebuild with new gears, bearings, seals and shafts, with materials suited to the service.
- Industrial pump repair — process, transfer and metering pumps rebuilt, with seals and clearances selected for the fluid.
- Custom gear manufacturing — replacement gears cut when the original is worn, broken or no longer available.
- Hydraulic cylinder repair — reseal, re-rod and re-hone, with rod and seal materials suited to the plant.
- Clear repair reporting — a plain record of what was found, what was replaced and what to watch next.
Emergency & Rush Service
When a line is down, call (714) 204-5167 — emergency service is available 24/7. We arrange emergency pickup and delivery to our Rialto shop, prioritise inspection, and, on qualifying jobs, complete rush repairs in 24–72 hours. Rush timing depends on unit condition, parts availability and job complexity, so we confirm a realistic schedule after inspection. See our emergency repair page.
How a Repair Works
Repairs are done at our shop in Rialto, California — we do not repair equipment on your site. Ship your unit to us, or arrange emergency pickup and delivery. We inspect it, confirm the failure and parts needed, and quote the repair before work starts. Turnaround depends on equipment condition, parts required, job complexity and availability. Rebuilt units are tested where applicable and covered by our 24-month warranty. Call (714) 204-5167 or request a quote with the brand, model and problem.
Get Started
If an agitator drive is leaking, vibrating or losing speed, or a process pump is losing flow, call (714) 204-5167. We will arrange pickup or shipping to our Rialto shop and prioritise the inspection if your process is down. Call (714) 204-5167 or request a quote.
Need a repair quoted?
Call (714) 204-5167 or send a quote request — we will confirm what to send in and how pickup works.