Precision Forged and CNC Machined Pinion Gear
The pinion gear is a vital component in modern power transmission systems, efficiently transferring torque and rotational speed between connected shafts. At Weforging, every pinion gear is manufactured through an integrated forging + CNC machining + testing process to achieve exceptional strength, precision, and reliability. Our ISO-certified production system combines advanced forging techniques with high-accuracy gear cutting to deliver consistent quality for OEM applications. Weforging’s pinion gears are widely applied in automotive differentials, gearboxes, wind turbines, and industrial machinery, ensuring smooth performance, stable operation, and extended durability.
What Is a Pinion Gear
A pinion gear is the smaller gear in a meshing pair that drives a larger gear, efficiently converting rotational motion and torque between connected shafts. It often serves as the driving gear, initiating precise movement within complex transmission assemblies. Moreover, depending on the system design, pinion gears can be spur, helical, or bevel types, each optimized for specific performance and alignment requirements. At Weforging, every pinion gear is engineered with refined tooth geometry, excellent concentricity, and tightly controlled tolerances. In addition, our design ensures smooth power transmission, quiet operation, and exceptional mechanical balance even during continuous service.
Manufacturing Process
Weforging applies a precise, ISO-controlled process for consistent performance:
Material Selection – Premium alloy or carbon steel (42CrMo, 20CrMnTi, 8620, 4140).
Closed-Die Forging – Forms high-density gear blanks with refined grain structure.
CNC Turning & Milling – Ensures precise hub, bore, and reference dimensions.
Gear Hobbing or Grinding – Cuts accurate teeth and smooth profiles.
Heat Treatment – Carburizing, quenching, and tempering to improve hardness and wear resistance.
Inspection & Testing – Dimensional, hardness, and tooth contact verification.
Key Advantages
Weforging’s pinion gears combine exceptional mechanical strength, precision, and reliability, making them highly suitable for both industrial and automotive applications. The forged construction delivers excellent grain structure and outstanding fatigue performance, while advanced CNC machining ensures precise alignment and a flawless surface finish. Moreover, the optimized tooth geometry enables smooth torque transfer, enhances operational stability, and maintains quiet, efficient motion. Surface hardening through controlled heat treatment further improves wear resistance and extends service life. As a result, every pinion gear can be customized in module, material, and size, positioning Weforging as a dependable partner for OEM and high-performance engineering solutions.
Applications by Industry
Weforging’s forged and CNC machined pinion gears are applied across multiple sectors for precision motion and power transmission:
Automotive Systems – Used in differentials and gearboxes to ensure smooth torque transfer and stable performance.
Industrial Machinery – Supports automation, reducers, and conveyors with excellent durability and alignment accuracy.
Wind Power Equipment – Converts turbine rotation into reliable energy with strong gear engagement and wear resistance.
Construction & Mining Equipment – Provides consistent power delivery and impact strength in heavy-duty operations.
Marine & Hydraulic Systems – Offers corrosion resistance and dependable function in wet or high-pressure conditions.
Quality & Inspection
Each pinion gear is thoroughly validated through Weforging’s advanced quality assurance process.Dimensional precision is confirmed using CMM equipment, ensuring exact geometry and fit.Hardness and case depth are carefully optimized through controlled heat treatment.Tooth contact and surface finish are evaluated for smooth operation and superior consistency.In addition, ultrasonic and magnetic particle analysis verify full structural integrity.All Weforging pinion gears are produced in compliance with ISO, AGMA, and DIN standards, guaranteeing excellence in every detail.
Inquiry & Customization
Weforging provides custom pinion gears designed to your material, size, and performance needs.
Our engineering team supports complete solutions from design optimization to mass production, ensuring quality consistency and on-time delivery.
➡ Contact us today to discuss your project or request a detailed quotation.
