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Product Description
Yile Machinery is a specialist manufacturer of custom helical gears, the core components inside high-performance speed reducers, pumps, compressors, and other industrial machinery. We engineer and produce high-precision helical gears to your exact specifications, delivering the strength, durability, and quiet operation your equipment demands.
Whether you are an OEM developing a new product line or an MRO team needing a critical replacement part, we are your trusted source for custom gearing.
Helical gears are a superior choice for many power transmission applications:
Smooth and Quiet Operation: The angled teeth of a helical gear engage gradually, reducing the impact and noise associated with spur gears. This results in less vibration and a smoother transfer of power.
Higher Torque Capacity: The angled cut results in a larger contact surface area, allowing helical gears to transmit more torque than a spur gear of the same size.
Ideal for High-Speed Applications: The smooth engagement makes helical gears perfect for high-speed gearboxes where noise and vibration must be minimized.
A gear's performance is a direct result of the quality of its manufacturing. Our process is designed to produce helical gears that are both strong and precise.
Material Selection & Forging: We use high-quality alloy steels such as 42CrMo (AISI 4140) , 34CrNiMo6, or carburizing steels like 17CrNiMo6. The raw material is forged to create an optimal grain structure that maximizes strength and fatigue resistance.
Precision Machining: The forged blanks are precision-machined using CNC lathes. The gear teeth are then cut using state-of-the-art CNC gear hobbing or shaping machines to ensure high accuracy.
Advanced Heat Treatment: To achieve the necessary durability, the gears undergo a controlled heat treatment process such as carburizing, nitriding, or induction hardening. This creates an extremely hard surface (58-62 HRC) for excellent wear resistance, while keeping the core of the gear tough and ductile to absorb shock loads.
Precision Gear Grinding: After heat treatment, the gear's tooth profile is precision ground. This critical finishing step corrects any minor distortions from the hardening process and produces a highly accurate and smooth tooth surface, which is essential for low-noise and high-efficiency operation.
Do you have a broken or worn-out gear and no drawing? We can help.
One of our core specialties is reverse engineering. We can take your old sample part, no matter its condition, and create a brand new, fully functional replacement. Our process includes:
Precise measurement of all critical dimensions.
Material analysis to identify the original alloy.
Creation of a new manufacturing drawing for your approval.
Production of a new gear that meets or exceeds the original specifications.
This service is invaluable for keeping legacy machinery running and minimizing costly downtime.
Our custom helical gears are used across a wide range of industries:
Industrial Gearboxes & Speed Reducers
Pumps & Compressors
Extruders & Mixers
Automotive & Off-Highway Transmissions
Mining & Construction Equipment
Machine Tools
Request a Quote for Your Custom Gear
Send us your technical drawing, sample part, or operational requirements. Our engineering team will work with you to produce the high-performance helical gear you need to keep your machinery running at its best.
