AGMA • ISO 9001 • 27 Years in Mesh

PRECISION GEARS THAT NEVER SLIP

GNT Gear engineers and CNC-manufactures spur, helical, bevel, worm and planetary gears + complete gearboxes for heavy industry, robotics, agriculture, mining and e-mobility. Tolerance down to DIN 4 / AGMA 14, torque up to 480 000 Nm.

Explore Gear Catalog Our Factory ↓

★ 4.9/5 from 620+ OEM clients● 48h prototyping● Lifetime lash warranty

GNT Gear factory - large industrial gears manufacturing

480k NmMax Torque Tested

0.002 mmGrinding Accuracy

27+

Years Manufacturing

14k

Gear References In Stock

Countries Supplied

99.98%

Zero-Defect Rate 2025

GNT Gear engineers inspecting precision gears

01 — About GNT Gear

FROM A GARAGE LATHE TO GLOBAL POWER TRANSMISSION LEADER

Founded in 1998 as General Transmission Technologies (GNT), today GNT Gear runs 3 plants, 148 CNC centers, Gleason & Liebherr grinding lines and its own metallurgy lab. We don't resell — we cut, harden, grind and test every tooth in-house.

✓

In-house everything.
Forging, hobbing, shaping, carburizing, nitriding, grinding, superfinishing and 100% CMM + double-flank inspection.

✓

Engineered for abuse.
Our gears survive -40°C Siberian mines and +55°C desert crushers. 38,000h MTBF certified.

✓

Custom in 15 days.
Send STEP / DWG, get DFM in 24h, prototype in 48h, series in 15 days. No MOQ games.

How We Build Tour The Plant

02 — Catalog

GEARS FOR EVERY LOAD

Stock + custom. Modules 0.5–40, diameters up to 3200 mm, hardened to 62 HRC. All AGMA/DIN certified with full traceability.

Best Seller

Spur & Helical Gears

Modules 1–32, ground to DIN 6. Quiet, 98% efficiency. For conveyors, mixers, machine tools.

From $18 / pc → Quote →

High Torque

Bevel & Hypoid Sets

Straight, spiral, Zerol. Lapped pairs, backlash 0.05–0.15 mm. For differentials, marine, lifts.

Pairs from $140 → Quote →

New 2026

Planetary Gearboxes GNT-P

Ratio 3:1–100:1, 450–480,000 Nm. IP65, <3 arcmin backlash. Robotics & wind ready.

From $390 → Quote →

Self-Locking

Worm Drives & Sets

Bronze / steel, ratios up to 100:1 single stage. Silent lifts, solar trackers, gates.

Sets from $65 → Quote →

Heavy Duty

Racks, Pinions & Splines

Helical racks up to 6m, hardened & ground. CNC gantry, press, rail approved.

From $42/m → Quote →

Custom

Full Custom Transmission

Gearbox design, FEA, prototyping, testing. E-axles, PTO, winches — from sketch to series.

DFM in 24h → Start →

03 — Technology

WHY GNT LASTS 3X LONGER

Metallurgy + geometry + surface. Our lab controls grain flow, case depth and micro-geometry tooth by tooth.

GNT ULTRA-FINISH™

Isotropic superfinishing Ra 0.15 µm → -30% friction, -12 dB noise, +40% pitting life. Tested on FZG rig.

Vacuum carburizing + high-pressure quench
Uniform case 0.8–2.2 mm, distortion <15 µm. No soft spots, no intergranular oxidation.

5-axis grinding & power honing
Reishauer & Gleason lines hold DIN 4. Crowning, tip relief and end relief optimized per load.

Digital twin & NVH simulation
KISSsoft + Romax + Ansys. We predict micropitting, scuffing and whine before cutting steel.

100% inspection protocol
Zeiss CMM, Klingelnberg P65, double-flank roll test, magnetic particle + ultrasonic. QR traceability per part.

04 — Process

FROM DRAWING TO DRIVE IN 4 STEPS

Transparent, fast, documented. Track your batch live in GNT Cloud.

Send Files

STEP, IGES, PDF or even photo. Engineer replies with DFM + price in 24h.

Prototype 48h

5-axis milled or 3D-printed steel prototype, bench-tested for fit & backlash.

Series Production

Forging → hobbing → heat treat → grinding → finishing. Live QC photos daily.

Test & Ship

Full-load run-in, noise map, laser marking, vacuum pack. DDP worldwide in 7–12 days.

⛏ Mining & Cement

Girth gears Ø3200 mm, pinions, mill drives. 62 HRC, shock-proof.

🤖 Robotics & Automation

Zero-backlash planetary, cycloidal, strain-wave. <1 arcmin.

🚜 Agri & Forestry

PTO boxes, bevel sets sealed for dust & mud. 10-year spares.

⚡ E-Mobility & Wind

High-speed e-axle gears 18k rpm, wind yaw & pitch drives.

"We replaced 3 suppliers with GNT. Failure rate dropped from 4.2% to 0.07%. Their double-flank reports are gold."

Marcus HellerCTO, NordConveyors GmbH

"48-hour prototype saved our harvest season. 400 PTO gears delivered in 13 days, perfect mesh."

Elena PetrovaProcurement, AgroMash Holding

"Quietest planetary we've tested — 61 dB at full load. GNT is now our standard for surgical robots."

David ChenFounder, RoboSurg Labs

05 — Journal

GEAR TALK NEWS & GUIDES

Maintenance tricks, failure analysis, material science and factory updates. Written by engineers, not marketers.

Oct 12, 2026

Why Helical Gears Pit: 7 Causes and How GNT Fixes Them

Micropitting kills 43% of gearboxes early. Learn to read frosted flanks...

Read Soon →

Oct 02, 2026

Planetary Gearbox Maintenance: 15-Min Checklist That Doubles Life

Oil, backlash, temperature signatures — field guide from our service team...

Read Soon →

Sep 21, 2026

Bevel Gear Lapping vs Grinding: What to Choose in 2026?

Cost, noise, strength compared on real FZG test data...

Read Soon →

06 — FAQ

QUESTIONS? STRAIGHT ANSWERS

Real lead times, tolerances, MOQ and warranty. No fine print.

What is your minimum order quantity?

No MOQ for stock gears (1 pc ok). Custom gears from 1 prototype to 200k series. Price breaks at 10 / 100 / 1000 pcs.

What tolerances and quality can you hold?

Standard DIN 7-8, precision DIN 6, ultra-precision DIN 4-5 on request. Full Klingelnberg report with every batch. AGMA 10-14 available.

How fast is production and delivery?

Stock ships in 24h. Prototypes 48h. Series 15-25 days depending on heat treat. DHL/FedEx + sea/air DDP to 62 countries.

Do you provide design help?

Yes — free DFM, KISSsoft calculation, FEA and NVH optimization. Send STEP, we return optimized geometry in 24h.

What warranty do you give?

36 months or 12,000 operating hours, plus lifetime anti-backlash drift support. If our gear fails first — we replace + cover downtime.

07 — Contact

GET YOUR GEAR QUOTE IN 24H

Upload drawing, tell torque / rpm / ratio. Engineer — not bot — replies with price, lead time and DFM notes.

✉ [email protected] — RFQ desk
☎ +1 (312) 555-0148 — Mon–Sat 8:00–20:00 CET
◎ Plant: 4200 Industrial Pkwy, Cleveland, OH