The main function of the excavator thrust collar is to axially locate and prevent axial tampering. Through its design principle, the thrust collar ensures that the rotating parts of the excavator remain stable in the axial direction and prevents unnecessary movement or tampering during the working process, thus ensuring the stable operation and precise operation of the excavator.

Working principle of thrust collar
The working principle of the excavator thrust collar is based on the preload force of the coil spring. The thrust collar usually consists of an inner ring that fits into a part on the shaft and an outer ring that contacts the machine housing. Between the inner and outer rings are a series of helical springs that generate a preload force that keeps the inner and outer rings in contact with each other, thus realizing the restriction of axial movement. When an axial force is applied to the outer ring, the outer ring transmits the force to the inner ring through the helical springs. Due to the high stiffness of the helical springs, the distance between the inner and outer rings remains relatively constant, thus realizing the restriction of axial movement.

Advantages of thrust rings
High precision: Thrust rings can achieve micron-level positioning accuracy, ensuring high-precision operation of the machine.
Small friction coefficient: The small friction coefficient of thrust ring can effectively reduce the friction of axial movement and improve the running efficiency of the machine.
Good stability: As the preload force of the thrust ring can be adjusted, the distance between the inner and outer rings will remain relatively stable even during a long period of use, and no loosening will occur.
Wide range of application: Thrust rings are suitable for axial positioning and prevention of axial runout in various mechanical fields, including various machine tools, transmission systems, hydraulic systems, etc.