ZNT gear commutator

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Product Overview: 

A steering gearbox, also known as a commutator or steering unit, is a power transmission mechanism. 

Steering gearboxes are standardized and available in various specifications. Speed ratios of 1:1, 1.5:1, 2:1, 

2.5:1, 3:1, 4:1, and 5:1 are all actual transmission ratios, with an average efficiency of 98%.

Product Structure:

1. Housing: Made of high-rigidity FC-25 cast iron;

2. Gears: Made of 20CrMnTi alloy steel, heat-treated, carburized, quenched, and ground;

3. Main Shaft: Made of 40Cr alloy steel, heat-treated, with high load-bearing capacity;

4. Bearings: Equipped with heavy-duty tapered roller bearings;

5. Oil Seals: Imported double-lip oil seals, providing dust and leak prevention.

Performance Characteristics:

1. Spiral bevel gear steering gearboxes are available in single-shaft, double-horizontal-shaft, 

single-vertical-shaft, and double-vertical-shaft configurations.

2. The gearbox can operate in both directions, providing smooth transmission at low 

and high speeds with low noise, minimal vibration, and high load-bearing capacity.

3. When the speed ratio is not 1:1, horizontal input and vertical output result in deceleration, 

while vertical input and horizontal output result in acceleration.

Technical Parameters:

Speed Ratio Range: 1:1 1.5:1 2:1 2.5:1 3:1 4:1 5:1

Torque Range: 11.2 — 5713 Nm

Power Range: 0.014 — 335 kW

Lubrication:

1. During the initial two weeks or 100-200 hours of use, the initial wear period may occur, 

resulting in a small amount of metallic wear particles. Please clean the interior and replace the lubricating oil.

2. For long-term use, change the lubricating oil every six months to one year or every 1000-2000 hours.

3. The steering gearbox lubricant should be China Petroleum gear oil at 90-120 degrees Celsius. 

For low speed and light load conditions, it is recommended to use 90-degree gear oil. 

For heavy load and high temperature conditions, it is recommended to use 120-degree gear oil.