Custom 20CrMnTi High Precision Spiral Bevel Gears For Industrial Machine

Product Specification

Custom 20CrMnTi High Precision Spiral Bevel Gears For Industrial Machine

Spiral Bevel Gears (also known as spiral bevel gears) are core precision transmission components for power transmission between intersecting shafts (usually 90°). With curved spiral teeth, they feature smoother transmission, higher load capacity and lower noise than straight bevel gears, widely used in high-speed & heavy-load fields such as automobiles, engineering machinery, reducers, aerospace, ships, etc.

Product Features

• Spiral Curved Tooth Structure: Tooth trace is arc spiral, progressive meshing contact without instantaneous impact
• Shaft Angle Adaptation: Mainly for 90° intersecting shafts; customizable for 30°–150° non-right angle transmission
• High Precision Grade: Industrial grade ISO 5–7 (GB/T 11365), precision grade up to 3–5
• Composite Load Capacity: Transmit torque while bearing radial & axial forces with balanced stress
• Low Noise & Smoothness: Large contact ratio, multi-tooth meshing, small vibration & shock, 10–15dB lower noise than straight teeth
• High Efficiency & Durability: Transmission efficiency 95%–98%, wear-resistant, anti-pitting, long service life
• Diverse Materials: Mainly alloy structural steels (20CrMnTi, 20CrMo, 42CrMo), strengthened by induction/carburizing quenching

Technical Parameter Table

Working Principle

• Spatial Meshing Transmission: Axes intersect (usually 90°), teeth distributed conically & spirally, realizing vertical direction change + torque transmission
• Progressive Meshing: Teeth engage gradually from end, full contact, smooth disengagement—no instantaneous impact, smoother than straight teeth
• Multi-tooth Load: Contact ratio ε=1.5–2.5, 2–3 tooth pairs loaded simultaneously, uniform load distribution & higher capacity
• Force Balance: Generate tangential, radial & axial forces; matched bearings required to support axial thrust
• Constant Ratio: Tooth ratio = inverse speed ratio (i=Z₂/Z₁=n₁/n₂), accurate & stable transmission

Main Applications

• Automotive: Differentials, transfer cases, drive axles (core application)
• Engineering Machinery: Main reducers, steering, winch systems of excavators, loaders, rollers
• Industrial Reducers: K/S series spiral bevel gearboxes, gear diverters, speed increasers
• Machine Tools: Spindle drive, feed mechanisms, tool changer diverters of boring/milling/grinding machines
• Aerospace: Aircraft landing gear, engine drive, helicopter tail rotor systems
• Marine: Propulsion, steering gear, windlass, hatch cover drive
• New Energy: Wind turbine yaw/pitch, PV tracker drive, energy storage equipment
• Others: High-speed & heavy-load transmission in printing, textile, food, petroleum, metallurgy, rail transit

Product Advantages

• High-Speed Stability: Progressive meshing, low shock, suitable for 3000–12000rpm ultra-high speed
• Heavy Load Capacity: 30%–60% higher load capacity than straight bevel gears, anti-bending, anti-pitting, impact-resistant
• Ultra-Low Noise: Precision ground/lapped teeth, noise 60–70dB, 10–15dB lower than straight teeth
• High Efficiency & Energy Saving: Efficiency 95%–98%, 3%–8% higher than ordinary bevel gears, long-term power saving
• Precise Transmission: Constant ratio, small backlash (0.02–0.1mm), high positioning accuracy
• Compact Structure: Spatial direction change, space-saving, ideal for lightweight & compact equipment
• Long Service Life: High-quality steel + strengthened heat treatment, 40%–80% longer life than ordinary gears
• Wide Adaptability: Designable for 90°/non-90° shafts, single/multi-stage, reduction/increase/diversion

Why Choose us?

• 7-axis CNC Grinding: We adopt high-precision 7-axis CNC grinding machines, holding tolerances as tight as ±5μm, ensuring gears run quietly, smoothly and with outstanding durability.
• Strong technical expertise: Our core R&D team includes doctoral and master’s professionals specializing in spiral bevel gear technology, providing strong technical support for complex projects.
• Rigorous testing & high precision: All gears undergo 100% inspection with Gleason metrology systems. We can achieve DIN 6 grade accuracy with strict control over tooth profile and direction errors, keeping our quality at the industry-leading level.
• High transmission efficiency: Our gear designs support a single-stage reduction ratio of up to 300:1, with actual transmission efficiency reaching over 95%, greatly improving energy utilization.
• Excellent durability & cost efficiency: Our gears deliver 40% lower lifecycle cost and a failure rate below 0.5%, ensuring stable long-term operation and reduced maintenance costs.
• Fast response & short lead time: Supported by our digitalized production process, we are able to shorten the delivery cycle to only 20 working days, helping you accelerate project development and launch.
• Professional custom design capability: We provide fully customized gear solutions for applications requiring high-reduction, high-speed, heavy-load, low-noise, and special small-tooth profiles, based on your actual working conditions.