Pump gear 612600081893 for Weichai WD618 Engine Fuel injection pump parts

Introduction of pump gear 612600081893:

Structural features

1. Gear body: usually made of high-strength alloy steel or high-quality carbon steel, after precision machining and heat treatment, it has good wear resistance, fatigue resistance and strength to withstand high loads and long-term operation.

2. Tooth shape: Common ones include involute tooth shape and cycloid tooth shape. Pump gears with involute tooth shape have smooth transmission, high load-bearing capacity and relatively mature ufacturing process; cycloid tooth shape has the characteristics of uniform flow and low noise.

3. Shaft hole: located in the center of the gear, used to connect with the drive shaft or driven shaft to achieve power transmission. The shape and size of the shaft hole depend on the specific installation requirements and connection method, which may be cylindrical, splined, etc.

4. Keyway or spline: If the shaft hole is cylindrical, it is generally equipped with a keyway to transmit torque through the key to ensure a reliable connection between the gear and the shaft; if it is a spline shaft hole, the power is transmitted directly through the mutual cooperation of the splines. The spline connection has higher centering accuracy and load-bearing capacity.