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24/7 Emergency
Industrial Repairs

24/7 Emergency Industrial Gearbox Repair

When downtime costs you thousands, we deliver OEM-spec gearbox repair, rebuild, and reverse engineering to get your equipment back in service fast.

Free Pickup, Delivery, and Quotes — Call Now: (909) 931-0300

Call Now: (909) 931-0300

Expert Gearbox Repair & Rebuild Solutions

With over 40 years of experience, we specialize in restoring industrial gearboxes to OEM standards, helping you minimize downtime, reduce costs, and get back to full production fast.

At National Gear Repair our expertise is comprehensive Gearbox Repair & gear manufacturing. We work with many different industries throughout North America and save our customers over 60% from buying new equipment.

From standard units to complex systems, we restore gearboxes to peak performance, reducing downtime and saving you thousands vs. replacement.

  • Ac Motor Repair & Rewind
  • Ball Mill Gears and Pinions
  • Bevel Gear Grinding
  • Boiler Feed Pump Repair
  • Crusher Mill Gears & Pinions
  • DC Motor Repair & Rewind
  • Gearbox manufacturing
  • Gearbox Repair
  • Hammer Mill Gears & Pinions
  • Helical Gear Grinding
  • Herringbone Gear Grinding
  • Hydraulic Cylinder Repair
  • Planetary Gearbox Repair
  • Pneumatic Jack & Cylinder Repair
  • Positive Displacement Pump Repair
  • Raymond Mill Gears & Pinions
  • Rectangular Flange Pump Repair
  • Rotary Kiln Gears & Pinions
  • Sag Mill Gears & Pinions
  • Speed Increaser Repair
  • Speed Reducer Repair
  • Spiral Bevel Gear Grinding
  • Split Herringbone Gear Grinding
  • Time Gear Sets Dragline/Shovels
  • Vacuum Pump Repair
  • Vertical Gear Pump Repair
  • Vertical Turbine Pump Repair
  • Worm Gear Grinding
Call Now: (909) 931-0300

Trusted Gearbox Rebuild Services

Emergency Gearbox Repair and Rebuild to the Original Manufacturer’s Specifications is our specialty. We repair all Foreign and Domestic Gearboxes, for industries such as: Chemical, Cooling Towers, Food & Beverage, Mining, Oil Refining, Pharmaceutical, Plastic and Rubber, Power Generation, Pulp and Paper, Renewable Fuels, and More!

Every industrial gearbox follows our proven repair process. We begin with free nationwide pickup, a comprehensive teardown and inspection, and a detailed inspection report complete with photos and video. After you review and approve your free repair quote, our experienced technicians repair or manufacture the required components, perform rigorous quality testing, and return your gearbox built to OEM specifications—helping you minimize downtime and get back into production as quickly as possible.

Every industrial gearbox follows our proven repair process…

industrial gearbox-repair process

We are the only business out there that is a fast, dependable, gearbox repair, gearbox rebuild, and gear manufacturing company all in one, a complete one-stop shop to anything related to gearboxes. We offer you unmatched gearbox repair expertise, giving your gearbox a long-lasting life once it passes our rigorous inspection before it leaves. Our quality assurance is at the highest level, making sure all speeds of your gearbox have passed all tests as they were built to.

To ensure that all gear products are repaired, rebuilt or manufactured to industry quality standards, National Gearbox Repair follows guidelines established by American Gear Manufacturers Association (AGMA). Our Timken/Dodge/Falk Certified Technicians follow all standards and practices to ensure that your industrial gearbox works as good if not better than a brand new gearbox. These are long-lived procedures that have gained us a reputable and far unsurpassed recognition of being one of the top gear repair companies in the nation.
We understand every concern of your gearbox, We understand your concern for your gearbox and that the time away that is spent at our shop, away from your facility is very precious and valuable to your company. This is why we use all of our knowledge and expertise to ensure every part of the gearbox repair or rebuild is met with the highest satisfaction/guarantee and no shortcuts are used in the process.
Call Now: (909) 931-0300
Mining Industry AGGREGATES CEMENT GYPSUM & LIME PIT & QUARRY SAND & GRAVEL

POWER & WATER
ETHANOL
NATURAL GAS
NUCLEAR
THERMAL
WIND

STEEL MILLS
HOT & COLD FORGING
REBAR
STEEL ROLLED
 

Gearbox Restoration and Custom Gear Manufacturing

We provide Emergency Gear Manufacturing to your exact specifications. Bevel Gears, Gear Hobbing and Grinding on Helical Gears and Double Helical Gears, Herringbone Gears, Split Herringbone Gears, Spiral Bevel Gears, Spur Gears, and more, up to 20 feet in diameter.

PLASTIC & RUBBER
BLOW MOLDING
EXTRUDING
INJECTION MOLDING
RUBBER GUM
RUBBER PRODUCTS MFG
THERMO MOLDING
TIRE INDUSTRIES

PHARMACEUTICAL INDUSTRY
FREEZE DRY DEPT
LIQUID NITROGEN DEPT
PLASMA DEPT
REVERSE OSMOSIS DEPT

FOOD & BEVERAGE INDUSTRY
FLOUR MILLS
FOOD & BEVERAGE INDUSTRY
FRUIT & TOMATO PROCESSING
MILK/SODA/WINE
SOYBEAN
SUGAR MILLS
VEGETABLE OIL PROCESSING

Industrial Gearbox Rebuild

Restore worn industrial gearboxes to OEM specifications with expert rebuilding, precision inspection, and dependable turnaround.

Every rebuild is engineered to reduce downtime and protect your bottom line. We identify the root cause of failure, replace critical components, and restore your gearbox to peak performance—often at a fraction of the cost of full replacement. Built for reliability. Delivered with speed.

rebuild gearbox on pallet

Frequently Asked Questions

Yes, we offer 24/7 emergency gearbox repair support, along with 24- to 48-hour rush repair turnaround for qualifying jobs nationwide across the United States.

Repairing a gearbox can save you 40% to 60% compared to buying new, often with faster turnaround and less downtime than waiting for a replacement.

Catching gearbox issues early is the key to preventing complete mechanical failure. Facility operators should look out for the following warning signs:

  • Abnormal Noise and Vibration: Grinding, whining, clunking sounds, or unusual vibrations often indicate misaligned gears, bearing failure, or worn gear teeth.
  • Overheating: If a gearbox runs hotter than its specified operating temperature or burns off paint, it is likely suffering from inadequate lubrication, excessive friction, or overloading.
  • Fluid Leaks and Contamination: Pooling oil around the base of the unit, worn seals, or metal shavings found during routine oil analysis strongly suggest internal component wear.
  • Inconsistent Performance: A noticeable drop in output speed, reduced power transmission, or general mechanical sluggishness points to internal damage that requires immediate inspection.

We pick up your gearbox free of charge, inspect it, and perform a full teardown at no cost.

We then send you photos and a video showing any damage we find.

If you approve our repair quote, simply send us your purchase order number and we will begin the work.

If you decide not to move forward, we will reassemble your gearbox and return it to you free of charge.

If you are looking for a reliable gearbox repair service near you, NGR offers a nationwide process designed to feel as easy and responsive as working with a local company.

We arrange free gearbox pickup, provide detailed inspections with photos and video, communicate closely throughout the repair, and return your unit once the work is complete.

Choose a gearbox repair company that has proven experience with industrial gearboxes, offers a detailed teardown inspection, provides clear photos or video of the damage, and has the ability to repair or manufacture replacement parts in-house. A reliable gearbox repair company should also understand your industry, offer emergency repair options, and communicate clearly throughout the repair process.

National Gear Repair is a trusted choice for industrial gearbox repair because we offer free gearbox pickup, a free teardown inspection, detailed damage reporting with photos and video, and 24- to 48-hour rush repair options when downtime is critical.

We repair, rebuild, and manufacture gearbox components for heavy-duty industries including mining, oil and gas, steel mills, plastics, power plants, and other industrial applications.

Some of the Industrial Gearbox Brands We Repair and Rebuild

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