Top 10 Precision Gear Manufacturers in China

Introduction

In the evolving global manufacturing landscape, precision gears are critical for key sectors like robotics, EV drivetrains, aerospace, and industrial automation. China is home to many influential industrial gear suppliers—but only a select few lead in capability and innovation.

This article deep dives into the Top 10 precision gear manufacturers in China, starting with PairGears—our own agile, high-accuracy, OEM-focused factory that blends prototyping speed with industrial-grade precision. Whether you seek custom gear manufacturing, low-volume agility, or trusted mass-production scale, this guide will help you navigate the best partners for high-quality precision gears.

1. PairGears – Agile Precision Gear Manufacturing at Scale

China precision gear manufacturer-PAIRGEARS

As a modern precision gear manufacturer and OEM gear supplier, PairGears stands out for bridging agile prototyping with scaled industrial delivery.

Key Differentiators:

• MOQ from 1 piece for prototype gears, pilot builds, and service spares.

• First Article in ≤30 days after tooling approval. Instant RFQs upon drawing approval; tooling cost is refundable, reducing initial investment.

• In-house full process flow: forging → rough turning → hobbing/shaping → shaving/grinding → heat treatment → blasting → cleaning/rust-proofing → single-piece packaging → shipment.

• Precision capability: German KAPP grinding machines achieve DIN/ISO 1328 Grade 4 with ≤2 µm cumulative error. Multiple parallel processes (hobbing, shaving, grinding, broaching, CNC) enable cost-effective precision.

• Material and heat-treatment breadth: Materials include 20MnCr5, 20CrMnTi, SAE 8620/5120/1045/4140, 40Cr, SCM440/415; treatments include carburizing, nitriding, induction hardening.

• Engineering and metrology: 12 senior engineers; 20+ measurement systems (gear form center, CMM, hardness, metallography); 3D simulation + tolerance stack-up for efficient first-pass yields.

• Quality and certification: DFMEA/PFMEA, full inspection on hardness and dimensions, test rigs, IATF-16949/ISO 9001 compliance.

PairGears is ideal for OEMs seeking custom gear manufacturing with lightning-fast prototyping and industrial precision

2. Nanjing High Accurate Gear (China High Speed Transmission) – Wind-Power Gear Specialists

Nanjing High Speed & Accurate Gear Group Co.,ltd, Founded in 1969, Nanjing High Accurate (part of CHSTE) leads in precision gear manufacturing for wind turbines and heavy-duty rotary systems.

• A major gear and wind-power gearbox manufacturer with extensive R&D and global OEM customers.

• Strong certifications and reputation across energy, marine, and infrastructure sectors

3. Fast Gear Co., Ltd.

Fast Gear (website: www.fast-gear.com) is another top-tier Chinese manufacturer specializing in transmission gears and gearboxes. Known primarily for their automotive and commercial vehicle gear systems, Fast Gear has decades of experience delivering reliable, high-performance gearing solutions.

• Automotive Focus: Strong capabilities in designing and producing transmission gears for trucks, buses, and passenger vehicles.

• Quality Control: Implementation of advanced quality management systems ensures consistent product quality.

• Innovative Products: Fast Gear invests in R&D to improve gear efficiency and durability.

4. Shanghai Automobile Gear Works (SAGW)

Shanghai Automobile Gear Works (website: www.sagw.com) is a leading precision gear manufacturer located in Shanghai, known for its high-quality gear products and extensive experience in industrial gear production.

• Product Range: Specializes in cylindrical gears, bevel gears, worm gears, and special custom gears.

• Advanced Equipment: Equipped with CNC gear grinding machines, gear hobbing, and heat treatment facilities.

• Quality Certifications: Holds ISO9001 and industry-specific certifications ensuring reliability.

• Market Focus: Serves automotive, machinery, and heavy equipment sectors, with a growing export footprint.

5. Dalian Huarui Heavy Industry Gear Works

Dalian Huarui Heavy Industry Gear Works (website: www.dhhi.com.cn) is a division of Dalian Huarui Heavy Industry Group, one of China's leading heavy equipment manufacturers. The gear works division specializes in large-module, high-precision custom gears, primarily serving the wind energy, mining, metallurgy, and marine industries.

• Heavy-Duty Focus: Specializes in heavy-duty and large-diameter gears that require high-load capacity and durability.

• Advanced Equipment: Equipped with large-scale CNC gear hobbing, grinding, and measuring systems to ensure precision even on massive components.

• Industry Partnerships: Supplies gear products to major domestic and international machinery manufacturers.

• Certifications: ISO9001, ISO14001, and other key quality and environmental certifications.

With decades of experience and a strong focus on high-load gear applications, Dalian Huarui stands out as a key player in the custom precision gear sector in China.

6. Zhejiang Shuanghuan Transmission Machinery Co., Ltd. – High-Speed Rail & EV Gear Powerhouse

Established in 1980, Shuanghuan is among China's largest gear component suppliers.

• Products feature in high-speed rail gear systems and EV drivelines.

• Global OEM customer base including ZF, Cummins, Caterpillar.

7. Zhuzhou Gear Co., Ltd. – R&D-Heavy OEM Gear Specialist

With origins in 1958, Zhuzhou Gear is a premium precision gear manufacturer:

• Annual output: 1.2M spiral bevel sets, 300K cylinder gears, 10M forged gears.

• Strong exports, global service network, and OEM partnerships.

8. China Gear Motions – Precision Cut and Ground Gears from Shenzhen

An aggregator of several regional factories, China Gear Motions specializes in both cut and ground gear manufacturing:

• Known for precision, flexibility, and variety in industrial gears.

• Serves across automotive, robotics, and industrial sectors.

9. Chamol Precision Machinery – Spiral Bevel Gear Experts

Founded in 1968 in Wuxi, Chamol specializes in high-quality bevel and spur gears:

• Civil and defense supply base, especially in aerospace/military grade gears.

• Capable of Gleason-level spiral bevels (1–38 module), and cylindrical gears up to 45 module.

10. Jinhua JingGong Automotive Gear Co., Ltd. – Transmission Specialists

Operating since 1992 in Zhejiang:

• Manufactures 500,000+ parts/year for automotive and industrial sectors.

• IATF 16949 certified; developed EV front-drive gearboxes.

Comparison Table of Top 5 Custom Precision Gear Manufacturers in China

Rank	Manufacturer	Special Strength
1	PairGears	Customization, advanced equipment, global export
2	Nanjing High Accurate	Long history, R&D, heavy industry expertise
3	Fast Gear	Automotive focus, high quality control
4	Shanghai Automobile Gear Works	Advanced CNC equipment, industrial scale
5	Dalian Huarui Heavy Industry Gear Works	Heavy-duty gear design and manufacturing
6	Zhejiang Shuanghuan	High-speed rail gears, EV driveline OEM supply
7	Zhuzhou Gear Co.	R&D-centric, global OEM supplie
8	China Gear Motions	Ground/cut precision gears, flexible production
9	Chamol Precision Machinery	Military/aerospace bevel gear expert
10	Jinhua JingGong	EV transmission, IATF-certified, auto gear specialist

Conclusion

Selecting the right precision gear manufacturer in China depends heavily on your target volume, application, and engineering needs. Here’s how to align:

• Prototype to low-volume runs? Prioritize PairGears for fast, flexible, precise service.

• Energy or heavy industry segments? Consider Nanjing High Accurate or Dalian Huarui.

• High-speed rail or EV powertrains? Turn to Shuanghuan or JingGong.

• Automotive OEMs needing scale? SAGW offers massive capacity and digital maturity.

• Specialized bevel gear needs? Chamol and Zhuzhou deliver aerospace/defense precision.

China’s gear industry continues to mature. With rising investments in CNC and grinding capabilities, even more suppliers will soon match global high-precision standards. Meanwhile, companies like PairGears demonstrate how agility, engineering depth, and global reach give OEMs a competitive edge.

If you're looking for a dependable gear supplier who understands both precision and global business, PairGears is ready to deliver.Contact us！