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Product Description
Engineered for Quiet, High-Torque, Right-Angle Power Transmission
Yile Machinery is an expert manufacturer of custom spiral bevel gear sets. We produce fully optimized, case-hardened, and lapped gear pairs that deliver industry-leading performance in the most demanding applications.
Using premium alloy steels like 17CrNiMo6 (18CrNiMo7-6) and state-of-the-art manufacturing processes, we deliver precision-ground spiral bevel gears for automotive, marine, robotics, and high-performance industrial gearboxes.
Spiral bevel gears are the premier solution for high-performance right-angle drives, offering:
High Torque & Speed Capacity: The spiral tooth design allows for gradual engagement and greater tooth contact, enabling smooth transmission of high loads at high speeds.
Low Noise & Vibration (NVH): The smooth, rolling contact between teeth results in significantly quieter and lower-vibration operation compared to straight bevel gears.
High Efficiency: Precision manufacturing minimizes friction, leading to highly efficient power transmission (often >98%).
Strength and Durability: When produced with the right materials and heat treatment, these gears offer exceptional fatigue life and wear resistance.
Creating a perfect spiral bevel gear set requires a mastery of complex manufacturing techniques. Our process is designed for ultimate precision and repeatability.
Premium Material Selection: We utilize high-grade case-hardening steels like 17CrNiMo6 / 18CrNiMo7-6 (equivalent to AISI 9310 / 8620). This material is renowned for its high core toughness and excellent surface hardenability.
5-Axis CNC Machining: The gear teeth are rough-cut on advanced 5-axis CNC milling or specialized Gleason machines, creating the complex spiral geometry with high accuracy.
Case Hardening (Carburizing): The machined gears undergo a precise carburizing and quenching process. This creates an extremely hard, wear-resistant surface (typically 58-62 HRC) while maintaining a tough, ductile core that can absorb shock loads without fracturing.
Hard Gear Grinding: After heat treatment, the gear teeth are precision ground. This critical step corrects any minor distortions from the hardening process and produces the final, highly accurate tooth profile required for low-noise operation.
Lapping in Matched Sets: The gear and pinion are lapped together as a matched pair. This finishing process polishes the tooth surfaces and optimizes the contact pattern, ensuring perfect meshing and the quietest possible operation. We deliver these gears only as tested, matched sets.
Gear Metrology: We use specialized Coordinate Measuring Machines (CMMs) to verify tooth profile, lead, spacing, and runout against your design specifications.
Contact Pattern Testing: Every matched set is tested with marking compound to ensure the location and shape of the tooth contact pattern is ideal.
Material & Heat Treat Certification: Full traceability and certification for materials and heat treatment processes are provided.
Automotive: Differentials for cars, trucks, and off-road vehicles.
Industrial Machinery: Machine tool spindles, robotics, and automation systems.
Marine Propulsion: Outboard motors, stern drives, and thrusters.
Aerospace: Accessory gearboxes (APUs).
Agricultural Machinery: Harvester heads and right-angle drives.
Request a Quote for Your Custom Gear Set
Send us your technical drawings for both the gear and pinion. Please include material, heat treatment, gear quality requirements (e.g., AGMA/DIN class), and annual quantity to receive a comprehensive manufacturing proposal from our engineering team.
