High-Torque Helical Gears - Universal Fit for Motors, Reducers & Automation Equipment

1. One-Sentence Core Summary

2. Professional Technical Details

1. Basic Definition & Classification

• Core Principle: Cylindrical gears with spiral tooth lines; meshing occurs via progressive contact (instead of instantaneous contact in spur gears), reducing impact loads and suitable for power transmission between parallel shafts.

• Key Types:

• Right-hand Helical Gear: Tooth lines spiral upward to the right, most widely used.

• Left-hand Helical Gear: Tooth lines spiral upward to the left, must be paired with right-hand gears.

• Herringbone Gear: Symmetrically composed of left and right spiral teeth, eliminating axial forces, ideal for heavy-load, high-speed applications (e.g., marine propulsion systems).

2. Core Technical Parameters

3. Advantages & Application Scenarios

• Core Advantages:

• Smooth meshing and low noise (progressive contact reduces impact);

• 30%-50% higher load capacity than spur gears (larger tooth contact area);

• Compact structure, enabling larger gear ratios in limited space.

• Typical Applications:

• Industrial Machinery: Gearboxes, conveyors, compressors, machine tool spindles;

• Automotive Sector: Transmissions, drive axles, engine timing systems;

• General Machinery: Fans, pumps, reducers;

• High-End Equipment: Robot joints, aerospace transmission components.

4. Materials & Manufacturing Standards

• Common Materials:

• Steel: 20CrMnTi (carburized and quenched, for heavy loads), 45# steel (quenched and tempered, for medium loads);

• Cast Iron: HT200 (for low-speed, light-load scenarios, cost-effective);

• Non-Metallic Materials: Nylon, POM (for low-noise, lubrication-free applications).

• International Standards:

• ISO 6336 (Gear load capacity calculation standard);

• AGMA 2001 (American Gear Manufacturers Association standard);

• DIN 3990 (German standard for helical gear geometric accuracy);

• GB/T 10095 (Chinese standard for helical gear accuracy).

5. Key Differences vs. Spur Gears