What cause the damage of the release bearing clutch?

The release bearing clutch is subjected to axial load, impact load and radial centrifugal force during high-speed rotation during use. In addition, the torsion torque and the reaction force of the separating lever are not on the same straight line, and a torsional moment is also formed.
The release bearing clutch has poor working conditions, intermittent high-speed rotation and bears high-speed friction, high temperature, poor lubrication conditions, and no cooling conditions.

Reasons for damage of release bearing clutch:
The damage of the release bearing clutch is closely related to the driver's operation, maintenance and adjustment. The causes of damage are roughly as follows:
1) The working temperature is too high to produce overheating
Many drivers often half-step the clutch when turning or decelerating, and some rear feet are still placed on the clutch pedal; some vehicles have too large free stroke adjustments, which makes the clutch disengaged completely and is in a semi-engaged and semi-disengaged state Due to dry friction, a large amount of heat is transferred to the release bearing clutch. The release bearing clutch is heated to a certain temperature. The butter melts or dilutes and flows, which further increases the temperature of the separation bearing. When the temperature reaches a certain level, it burns out.

2) The release bearing clutch is worn out due to lack of lubricant
The release bearing clutch is lubricated with butter. There are two ways to add butter. For the 360111 separation bearing, the back cover of the bearing should be opened and filled with grease during maintenance or when the transmission is removed, and then reinstall the back cover For the 788611K separation bearing, it can be removed and immersed in molten grease, and then taken out after cooling to achieve the purpose of lubrication.

Drivers tend to ignore this in actual work, resulting in a lack of oil in the release bearing clutch. In the case of no lubrication or less lubrication, the wear of the separation bearing is often several times to several tens of times after the lubrication. With increased wear, the temperature will also be greatly increased, which makes it more susceptible to damage.

3) Free travel is too small or too many times of loading
According to the requirements, the gap between the release bearing clutch and the separation lever is generally 2.5mm. It is reflected that the free stroke on the clutch pedal is 30-40mm. The free stroke is too small or there is no free stroke at all. The release bearing is in a normally engaged state.

According to the principle of fatigue failure, the longer the working time of the release bearing clutch, the more serious the damage; the more the number of load, the more likely the bearing to be fatigue damaged. And the longer the working time, the higher the temperature of the bearing, and the easier it is to burn, which reduces the service life of the release bearing clutch.

4) In addition to the above three reasons, whether the separation lever is adjusted smoothly and whether the release bearing clutch return spring is good have a great influence on the damage of the separation bearing.

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