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Product Description
Yile Machinery is a specialist manufacturer of custom precision gears. We engineer and produce high-performance steel gears—including spur, helical, and pinion gears—that are the driving force behind reliable and efficient mechanical systems.
We partner with OEMs to deliver fully finished, heat-treated, and quality-tested gears that are ready for assembly in your most demanding applications, from automotive starters to high-RPM power tools.
A gear's performance is determined by the quality of its manufacturing. Our process is designed for precision and durability at every stage.
Material Selection & Forging: We begin with certified high-grade alloy steels like 20CrMnTi, 40Cr, and 42CrMo. The raw material is forged into near-net-shape blanks, aligning the grain structure for maximum strength.
CNC Turning: The forged blanks are precision-turned on CNC lathes to create the exact dimensions, bore, and mounting features before teeth are cut.
CNC Gear Hobbing or Shaping: This is the heart of the process. We use advanced gear hobbing machines to cut the gear teeth with exceptional accuracy, ensuring a perfect involute profile for smooth, efficient meshing.
Heat Treatment: To achieve the required surface hardness and core toughness, the gears undergo a controlled heat treatment process, typically carburizing, quenching, and tempering. This creates a hard, wear-resistant surface (58-62 HRC) while maintaining a ductile core to absorb shock loads.
Precision Gear Grinding: For applications requiring the highest precision and lowest noise, we perform finish grinding on the gear teeth after heat treatment. This corrects any minor distortions and produces an exceptionally smooth surface finish.
We don't just make gears; we guarantee their quality.
Gear Profile Testing: We use specialized gear measurement equipment to verify the tooth profile, lead, and pitch against your drawing specifications.
Hardness Testing: Every batch is tested to ensure it meets the specified Rockwell hardness (HRC) for optimal wear resistance.
Material Certification: Full material traceability is provided with every shipment.
Our custom gears are critical components in a vast range of products:
Automotive: Starter motors, transmission gear sets, oil pumps, window regulators.
Power Tools: Gearboxes for drills, grinders, and saws.
Robotics & Automation: Actuators and high-precision robotic joints.
Small Appliances: Kitchen equipment and other motorized devices.
Industrial Machinery: Small gearboxes and pump assemblies.
Partner with a Precision Gear Expert
Send us your technical drawings and specifications. Please include material type, heat treatment requirements, annual quantity, and any gear quality class (AGMA/DIN) requirements. Our engineering team will provide a comprehensive manufacturing proposal.
