Human-shaped gear
Human-shaped gear
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  • Human-shaped gear
  • Human-shaped gear

This herringbone gear is forged from high-quality alloy steel (such as 20CrMo, 34CrAlNi7) and undergoes carburizing and quenching treatment. It has a high surface hardness (HRC58-62), good wear resistance, and excellent core toughness. The gear is precision machined using CNC gear honing machines, ensuring high tooth profile accuracy, smooth transmission, and low noise. The design features symmetrical herringbone teeth, where the axial forces of the teeth on both sides cancel each other out during meshing. It is suitable for high-speed (peripheral speed >30m/s), heavy-load (torque >1000kN·m) conditions and can withstand power transmission up to 20,000 kW. The gear shaft assembly is processed as a whole to ensure coaxiality between the gear and shaft, reducing transmission vibration.

Product Classification

1. By tooth direction: Left herringbone gear, Right herringbone gear

2. By tooth profile curve: Involute herringbone gear, Cycloidal herringbone gear

3. By processing accuracy: Precision grade (levels 5-6), General grade (levels 7-8)

4. By structural form: Solid herringbone gear, Spoked herringbone gear, Gear shaft assembly

Scope of Application

1. Metallurgical industry: Main drive of rolling mills, cold bed drives, heating furnace roller drives

2. Mining industry: Main drive of ball mills, hoist drives, crusher drives

3. Heavy machinery: Rotary drives of port cranes, travel drives of excavators, shield machine reducers

4. Energy industry: Wind power gearboxes, thermal power turbine generator drives, nuclear power equipment drives

5. Others: Ship propulsion systems, railway locomotive drives, large conveyor equipment

Working Principle

During herringbone gear transmission, the helical gears on both sides mesh simultaneously with the corresponding gears. One side generates an axial force to the left, while the other side generates an axial force to the right. These forces are equal in magnitude and opposite in direction, canceling each other out. This cancels the axial load impact on the bearings, prolongs bearing life, and improves transmission stability, especially suitable for high-speed and heavy-load conditions.

Herringbone Gear Model Parameter Table

Parameters

Model 1

Model 2

Model 3

Module (m)

10-30

30-50

50-100

Number of teeth (z)

50-150

150-300

300-500

Tooth width (b)

200-500mm

500-1000mm

1000-2000mm

Outer diameter (D)

Φ500-1500mm

Φ1500-3000mm

Φ3000-5000mm

Load torque (T)

>500kN·m

>1000kN·m

>2000kN·m

Peripheral speed (v)

<30m/s

<50m/s

<80m/s

Weight (W)

0.5-2t

2-10t

10-50t

Keywords

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Next： Large gear

Human-shaped gear
Human-shaped gear
+
  • Human-shaped gear
  • Human-shaped gear

Human-shaped gear

A herringbone gear is a type of double helical gear with teeth shaped like the character "人" (a V shape), consisting of two symmetrical helical gears with opposite tooth directions. This structure effectively cancels out axial forces, enabling high-speed, heavy-load, and smooth transmission. It is widely used in key transmission systems in fields such as metallurgy, mining, heavy machinery, and ships.

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