Manual gear clutch release bearing is a key component in automobile manual transmission system, which plays a vital role in the process of clutch engagement and disengagement. The following is a detailed introduction of manual gear clutch release bearing:

I. Definition and position

Definition: manual gear clutch release bearing, also known as clutch release bearing, is a bearing installed between the clutch and transmission. Its main function is to eliminate the heat and resistance generated by the direct friction between the clutch fork and the high-speed rotating clutch pressure plate to ensure the smooth engagement and disengagement of the clutch.

Position: The release bearing seat is loosely fitted on the tubular extension of the bearing cover of the first shaft of the transmission, and the convex shoulder of the release bearing is always pressed against the release fork through the return spring and backed up to the last position, keeping a certain clearance (usually 3~4mm) with the end of the release lever (release finger).

Second, manual gear clutch release bearing structure and composition

Manual gear clutch release bearing is a compact device composed of several basic components, the main parts include:

Outer ring: the fixed part of the bearing, attached to the clutch fork.

Inner ring: the part that rotates with the clutch diaphragm spring.

Rolling elements: usually balls or rollers that contribute to the smooth rotation between the inner and outer rings.

Cage: Holds the rolling elements in place and prevents them from colliding with each other during operation.

Contact surface: the point where the bearing makes contact with the diaphragm spring finger, usually coated with a layer of high-temperature grease to reduce friction and wear.

Third, manual gear clutch release bearing working principle

When the driver depresses the clutch pedal, hydraulic pressure is generated in the clutch master cylinder, which transmits the pressure to the clutch slave cylinder. The clutch slave cylinder activates the clutch release bearing in turn, causing it to move towards the diaphragm spring. The diaphragm spring moves backwards under pressure, releasing the clamping force on the pressure plate and lifting it off the clutch disc. In this way, the clutch disc is disengaged from the connection with the engine, cutting off the power output from the crankshaft and realising the clutch separation.

Fourth, Manual transmission clutch release bearing function and role

1. Promote smooth shifting: the clutch release bearing ensures that the clutch can be smoothly engaged and softly disengaged, so as to achieve a smooth shifting process.

2. Reducing wear and tear: by eliminating the heat and resistance generated by direct friction, the release bearing helps reduce the wear and tear of clutch components and prolongs their service life.

3. Improve transmission efficiency: when the clutch is engaged, the release bearing ensures that power can be efficiently transferred from the engine to the transmission.

Five, Manual transmission clutch release bearing bad performance

Manual gear clutch release bearing is an important part of the manual transmission, its main role is to make the clutch disengage or connect from the engine and transmission through the operation of the clutch pedal, in order to shift or stop. When the release bearing fails, the following manifestations may occur:

1. abnormal clutch pedal travel: if the release bearing is damaged, it may cause the clutch pedal to require greater travel to disengage the clutch, which can make it difficult for the driver to shift gears.

2. clutch slippage: a damaged release bearing may result in the clutch disc not being able to completely disengage from the engine, causing the clutch to slip, which will make the engine speed mismatch with the vehicle speed, making it feel weak when accelerating, and will also increase the wear of the clutch disc.

3. Difficulty in shifting gears: In the case of a damaged release bearing, the driver may find it difficult to shift gears, and sometimes it may even require extra force to cut the gears in.

4. Rattling noise: When the release bearing fails, an abnormal rattling noise may be heard during clutch operation, which is due to a problem with the fit between the release bearing and the clutch shaft.

5. Accelerated wear of clutch disc: Due to the damage of the release bearing, the clutch disc cannot work properly, which will accelerate the wear of the clutch disc and shorten its service life.

6. Abnormal Engine Load: Failure of the release bearing may result in increased engine load at idle, shaking or abnormal rattling.

7. Loose clutch disc: Bearing damage may cause the clutch disc to become loose or incorrectly placed, which may cause the clutch to fail or continue to rub.

If any of these conditions occur, the release bearing should be inspected as soon as possible. As damage to this component may affect driving safety, it is advisable to have it inspected and replaced at a professional automotive repair point in a timely manner. When replacing, you should make sure to use parts that meet quality standards to avoid new failures due to the quality of the parts.

Precautions

After the release bearing is damaged, it should be replaced in time to avoid causing more damage to the clutch and the whole transmission system.

In daily use, attention should be paid to the maintenance and repair of the clutch, regular inspection and replacement of badly worn parts.

Summarise

Manual transmission clutch release bearing is an important part of the automobile manual transmission system, and its performance directly affects the clutch engagement and disengagement effect as well as the driving performance of the vehicle. Therefore, attention should be paid to regular inspection and maintenance of the release bearing in the process of use to ensure that it is in good working condition.