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Product Description
Engineered for Quiet, High-Torque, Right-Angle Power Transmission
Yile Machinery is a specialist manufacturer of custom spiral bevel gear sets, including integral pinion shafts and their matching ring gears. Our components are engineered to deliver smooth, quiet, and highly efficient performance in the most demanding right-angle drive systems.
From vehicle differentials to industrial reducers, our precision-manufactured spiral bevel gears are the trusted choice for OEMs and MRO teams who require superior reliability and performance.
Spiral bevel gears offer significant performance benefits over straight-cut bevel or other right-angle drive mechanisms:
Higher Load Capacity: The curved teeth have a greater contact ratio, meaning more teeth are engaged at any given time, allowing for higher torque transmission.
Smoother & Quieter Operation: The gradual engagement of the spiral teeth results in significantly lower vibration and noise levels, which is critical for high-speed applications and operator comfort.
Greater Efficiency: The smooth, rolling contact between the teeth reduces friction and power loss.
Producing a high-quality spiral bevel gear set requires a mastery of advanced manufacturing techniques. Our process is designed for ultimate precision and durability.
Material Selection & Forging: We use specialized, clean gear steels like 20CrMnTi and 42CrMo. The material is forged to create an integral pinion shaft with an ideal grain flow for maximum toughness and fatigue resistance.
CNC Machining & Gear Cutting: The forged blanks are rough and finish-turned. The spiral gear teeth are then cut using advanced 5-axis CNC gear milling or hobbing machines for exceptional accuracy.
Specialized Heat Treatment (Carburizing): This is the key to a durable gear. The components are heat-treated in a carbon-rich atmosphere. This creates an extremely hard (58-62 HRC) outer case for wear resistance, while the core of the gear remains softer and tougher to absorb shock loads without fracturing.
Precision Hard Finishing (Grinding & Lapping):
Gear Grinding: After heat treatment, the tooth profile is precision ground to correct any minor distortions and achieve the final, highly accurate geometry.
Lapping (Matched Sets): The pinion shaft and its mating ring gear are run together in a specialized machine with an abrasive compound. This "mates" the two parts, creating a perfect tooth contact pattern and an ultra-smooth surface finish.
For guaranteed performance, our spiral bevel gears are supplied as a numbered, matched set. The lapping process creates a unique, perfect mesh between one specific pinion and one specific ring gear. They are designed to work together and should never be interchanged. This commitment to supplying matched sets is your guarantee of:
Optimal tooth contact pattern under load.
Minimum operational noise.
Maximum service life.
Our custom spiral bevel gear sets are critical components in a vast range of machinery:
Automotive & Off-Highway: Vehicle differentials, axle assemblies, agricultural machinery.
Industrial Gearboxes: Right-angle speed reducers, conveyor drives.
Machine Tools: Milling machine heads, CNC rotary tables.
Marine: Propulsion systems, thrusters.
Robotics & Automation: High-precision positioning systems.
Submit Your Gear Drawing for a Quote
Achieve superior performance in your right-angle drive. Send us your technical drawings for the pinion and ring gear, including material, heat treatment, and application details. Our team will provide a quote for a precision-lapped, matched set.
