Product Details

A special steel enterprise specializing in the production, research and development and sales of high alloy steel forgings

Hypoid Gears

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Core Advantages

Ultra-smooth transmission & low noise: Gradual meshing with high contact ratio, excellent for NVH control
High load capacity: Large contact area and high tooth root strength for super torque transmission
Compact structure: Offset axis design reduces chassis height and improves space utilization
High efficiency: Transmission efficiency up to 97%~99%
Long service life: Uniform contact stress distribution, strong resistance to pitting and wear

Key Differences from Spiral Bevel Gears

Item	Hypoid Gears	Spiral Bevel Gears
Axis Relationship	Offset, non-intersecting	Intersecting (90°)
Tooth Surface	Hyperboloid	Conical surface
Axial Force	Larger	Smaller
Typical Application	Automotive rear axles	Reducers, machine tools

Common Materials & Heat Treatment

表格

Material Grade	Heat Treatment	Hardness	Application Scenario
20CrMnTi/8620	Carburizing → Quenching → Low-temp tempering → Gear grinding	Tooth surface: HRC 58~64Core: HRC 30~45	Automotive rear axles, engineering machinery (first choice)
20CrNiMo/17CrNiMo6	Same as above	Same as above	Heavy-duty trucks, mining, wind power
42CrMo	Quenching and tempering	HB 240~280	General industrial reducers

Typical Applications

✅ Automotive Industry: Rear drive axles of passenger cars, off-road vehicles and heavy-duty trucks; EV reducers✅ Engineering Machinery: Drive axles of loaders, excavators and road rollers✅ Heavy Industry: Large heavy-duty reducers, mining machinery, marine propulsion systems✅ Aerospace: Main reducers of helicopters (high strength & low noise requirements)

Processing & Usage Notes

Special Equipment: Machined by professional CNC gear cutting machines (Gleason/Oerlikon)
Pair Requirement: Designed, processed, inspected and used in pairs (non-interchangeable)
Installation: Strict control of meshing clearance and contact mark; matched with taper roller bearings
Lubrication: Use special hypoid gear oil (extreme pressure & anti-wear)
Accuracy Grade: GB/T 11365 Grade 6~7 (automotive); Grade 7~8 (industrial)