24/7 EMERGENCY
INDUSTRIAL GEAR MANUFACTURING

CALL NOW: (909) 931-0300

Custom Industrial Gear Manufacturing · Up to 20 Ft

Heavy-Duty Gears,
Built Right. 
Shipped Fast.

Custom and reverse-engineered industrial gears manufactured OEM specs, backed by a 24-month warranty and 24/7 emergency turnaround.

Get Help Fast (909) 931-0300GET A QUOTE

20 FT Capacity

0.0001" Tolerance

24-Month Warranty

24HR Emergency Rush

Heavy-Duty Gears, Built Right. Shipped Fast.

Gear Failure? Every Hour of Downtime Costs You.

Get a Fast, No-Obligation Quote

Get a Quote (909) 931-0300

Any Gear. Any Size. Built to Spec.

From a single replacement pinion to ring gears up to 20 feet in diameter — we manufacture and reverse-engineer the full range of industrial gearing.

What We Manufacture

Helical & Herringbone

Single, double, and split helical configurations with precision ground tooth profiles.

01

Bevel & Spiral Bevel

Right-angle drives with optimized contact patterns and reduced noise.

02

Worm & Double Enveloping

High-ratio worm gear sets engineered for sustained load and minimal backlash.

03

Ring Gears (up to 20 ft)

Large-diameter ring gears for kilns, ball mills, and dragline equipment.

04

Pinions & Shafts

Horizontal turning up to 260 ft length with 32-inch swing capacity.

05

Splines & Custom Assemblies

Custom spline products in a wide range of materials, built to your drawings.

06

Free Inspection (909) 931-0300

Don't see your spec? We reverse-engineer from samples.

Why Plants Call Us First

Built for the Job OEMs Won't Touch.

When the original manufacturer is gone, slow, or quoting six months — we deliver in days.

20-Foot Capacity

Cut gears up to 20 ft in diameter, few shops in the country can match it.

0.0001" Tolerances

Klingelnberg grinders and CNC precision deliver OEM-grade accuracy every time.

24-Month Warranty

Every gear we manufacture is backed for two full years, twice the industry standard.

24/7 Emergency Service

Rush turnaround in 24–48 hours when downtime isn't an option.

Have a sample? That's all we need.

Talk to an Expert (909) 931-0300

40 +

Years in Business

20 FT

Max Gear Diameter

60%

Savings vs. New OEM

24/7

Emergency Support

Trusted by Heavy Industry Nationwide.

Industries We Serve

For over 40 years, the toughest operations in America have called us when their gears fail. Whether it's a rolling mill in Pittsburgh or a turbine in Texas, we ship the part that gets the line running again.

Steel & Rolling

Power Generation

Mining & Cement

Oil & Gas

Pulp & Paper

Marine & Aerospace

Bring us the broken one. We'll build the new one.

GET A QUOTE →Start Repair (909) 931-0300

Answers, Fast.

Common Questions

Stop Searching. Start
Manufacturing.

One call gets you a quote, a timeline, and a gear that lasts.

Free Inspection (909) 931-0300

Prefer email? Reach Tony directly at Tony@NationalGearRepair.com

Save Thousands — Repair Instead of Replace

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