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Precision Machinery Parts

Chongqing GuoLi Machinery Parts Co., Ltd. specializes in high-precision gears, shafts, planetary carriers, synchronizers, and transmission components for automotive and industrial applications.

Precision Gear Manufacturing

About Chongqing GuoLi Machinery

Chongqing GuoLi Machinery Parts Co., Ltd. is a professional manufacturer specializing in precision transmission components. With years of experience in gear and shaft manufacturing, we serve automotive, industrial machinery, and heavy equipment sectors with high-quality, durable parts.

Our product range includes gears, input shafts, intermediate shafts, spindles, planetary carriers, and synchronizers. We combine advanced CNC machining, heat treatment, and strict quality control to deliver components that meet international standards.

100+
Custom Designs Delivered
15+
Years Industry Experience
Gear manufacturing process Precision machining Quality inspection Industrial components

Our Precision Components

High-performance gears, shafts, carriers, and synchronizers engineered for durability, precision, and reliability in demanding applications.

Spur Gears

Spur Gears

High-precision spur gears with accurate tooth profiles for smooth power transmission in industrial and automotive systems.

  • • Module: 0.5–8
  • • Material: 20CrMnTi, 40Cr, 45# Steel
  • • Hardness: HRC58-63
  • • Precision Grade: DIN 5–7
Helical Gears

Helical Gears

Helical gears designed for high torque and low noise operation in transmission and industrial gearboxes.

  • • Helix Angle: 15°–30°
  • • Module: 1–10
  • • Material: 20CrMnTi, 18CrNiMo7-6
  • • Heat Treatment: Carburizing & Quenching
Input Shafts

Input Shafts

Precision-machined input shafts with integrated gears for automotive and industrial transmissions.

  • • Diameter: 20–100mm
  • • Length: 150–600mm
  • • Material: 40Cr, 42CrMo
  • • Surface Hardness: HRC58-62
Intermediate Shafts

Intermediate Shafts

Durable intermediate shafts with multiple gear integrations for multi-stage gearboxes and transmissions.

  • • Multi-gear configurations
  • • Material: 20CrMnTi, 40Cr
  • • Precision Grinding
  • • Dynamic Balancing
Planetary Carriers

Planetary Carriers

Robust planetary carriers for planetary gear sets used in automotive differentials and industrial reducers.

  • • Load Capacity: High-torque
  • • Material: 40Cr, 42CrMo
  • • Machining: CNC Milling & Turning
  • • Surface Treatment: Phosphating
Synchronizers

Synchronizers

High-efficiency synchronizer rings and sleeves for smooth gear shifting in manual transmissions.

  • • Brass & Molybdenum Coated
  • • Precision Stamping & Machining
  • • Friction Material: Sintered Bronze
  • • Application: Automotive Transmissions
Spindles

Precision Spindles

High-speed spindles for CNC machines and industrial equipment requiring rotational accuracy and rigidity.

  • • Runout: < 0.005mm
  • • Speed Rating: Up to 12,000 RPM
  • • Bearing Support: Angular Contact
  • • Material: High-Carbon Steel
Bevel Gears

Bevel Gears

Straight and spiral bevel gears for right-angle power transmission in differentials and industrial drives.

  • • Pressure Angle: 20°
  • • Spiral Angle: 35°
  • • Material: 20CrMnTi, 18CrNiMo7-6
  • • Precision: DIN 6

Why Choose GuoLi Machinery?

We combine advanced manufacturing, strict quality control, and customer-focused engineering to deliver reliable transmission components.

Quality Assurance

ISO-compliant processes, 100% inspection of critical dimensions, and material traceability for every batch.

Fast Turnaround

Efficient production planning and lean manufacturing ensure on-time delivery for samples and bulk orders.

Advanced Equipment

CNC gear hobbing, grinding, heat treatment lines, and CMM inspection systems ensure precision.

Customer Support

Dedicated engineering team for technical consultation, custom design, and after-sales service.

15+
Years Experience
200+
Industrial Clients
50+
CNC Machines
10+
Countries Served

Frequently Asked Questions

What materials do you use for gear manufacturing?

We commonly use 20CrMnTi, 40Cr, 45# steel, and 18CrNiMo7-6 for gears and shafts. Material selection depends on load, speed, and environmental requirements.

Can you produce custom-designed components?

Yes, we offer full OEM/ODM services. Provide your drawings or samples, and our engineering team will develop a production plan.

What is your typical production lead time?

Sample orders: 15–20 days. Mass production: 30–45 days depending on order volume and complexity.

Do you provide quality inspection reports?

Yes, we provide material certificates, dimensional inspection reports, and hardness test results with every shipment.

Get in Touch

For inquiries about our products or custom manufacturing services, please visit our official website.

Visit Official Website

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