Gear Force Machine
An open industrial gearbox with the gear train exposed during teardown at Gear Force Machine, for a chemical processing plant drive.
Chemical & Petrochemical · Nationwide · 24/7

A continuous process can't tolerate a failed drive.

Mixer and agitator drives, reactor gearboxes, and process pumps for chemical and petrochemical plants — torn down, rebuilt to OEM spec, and returned before an unplanned shutdown turns into lost batches.

Call 832-729-9906Request a Quote

Gear Force Machine is the one shop that repairs and rebuilds all of the rotating equipment chemical & petrochemical plants run on — gearboxes, centrifuges, Sigma and agitator mixers, process and metering pumps, and single- and twin-screw extruders. For continuous, high-duty operations where a single failed unit stops a whole train, we tear it down, inspect and measure every wear surface, and rebuild it to original OEM tolerances — with 24/7 emergency response when a process is down.

Obsolete and discontinued units are reverse-engineered and machined in-house, so a part number the OEM no longer stocks never turns a repair into a capital project. Every job ships with a written condition report, line-item pricing, free nationwide pickup, and a 3-year warranty on gearbox rebuilds. Process down right now? Call 832-729-9906.

A rebuilt Bird decanter centrifuge in fresh blue paint with an orange backdrive gearbox at Gear Force Machine.
Equipment We Service

The full range of rotating equipment we rebuild in chemical plants.

Gearboxes, centrifuges, mixers, pumps, and extruders across the process — the continuous-duty units where a failure idles a reactor, a mixing train, or an entire compounding line. One shop handles all of it.

  • Mixer & agitator drives (Sigma & others)
  • Separator & decanter centrifuges
  • Reactor & vessel gearboxes
  • Process & metering pumps
  • Single- & twin-screw extruders (polymer)
  • Centrifuge scroll & bowl rebuild
  • Cooling-tower fan drives
  • Obsolete/discontinued OEM units
How We Help

How we keep chemical plants in production.

Centrifuge Repair

Separator and decanter centrifuges rebuilt, with scroll and bowl restoration, balancing, and testing to keep separation running.

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Mixer Repair

Sigma, agitator, and reactor mixer drives torn down and rebuilt to OEM spec — sealing surfaces, gearing, and bearings restored.

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Gearbox Repair

Complete teardown, inspection, and OEM-spec rebuild on reactor and reducer gearboxes — with in-house gear cutting for obsolete units.

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Frequently Asked

Questions from this industry.

Emergency jobs on a downed process get prioritized — 24/7 intake, same-day start when possible. Most standard rebuilds ship in one to four weeks depending on size, condition, and parts. Call 832-729-9906 and we'll give you an honest timeline.

Yes. We routinely service units pulled from classified and corrosive environments. Tell us the process media and area classification up front and we'll match seals, coatings, and material specs — and decontaminate on intake — so the rebuild holds up where it operates.

Constantly. We reverse-engineer gears, shafts, scrolls, screws, and housings from the worn component and machine the replacement in-house, so a discontinued part number doesn't force a capital purchase with a year-long lead time.

Both. We assess on-site when it helps and offer free expedited pickup and delivery nationwide. Most heavy rebuilds happen in our Rosharon, TX shop where we control the machining, inspection, and testing.

Three years on gearbox rebuilds and 12 months on pump and screw work, covering workmanship and replaced components under normal operating conditions. Questions on a specific unit? Call 832-729-9906.
When You Need Us

Emergency or planned — we're ready when you call.

Pick up the phone for a technician dispatch. Submit a request for a detailed quote. Either way, you'll hear back within the hour.

Call 832-729-9906Request Service

24/7 Nationwide · ISO 9001:2015 · AGMA & AGC Member