Angular contact ball bearings are mainly used to adjust the axial gaps. Generally, it is used in pairs. This can avoid causing additional axial force, and can restrict the bearings within two directions within the axial gap range. However, the specific angle contact ball bearings are also combined according to the specific usage method. The following will answer the positive and negative of the corner contact with the corner of the corner.
1. Angular contact ball bearings orthogonal judgment method
The front of the corner contact with the ball bearing is the thin side of the outer ring, and the opposite side is the thickness of the outside. If there is a "<" symbol on the bearings, the sharp corners are facing the opposite side, and the front is facing the front. The difference between the corner contact and the reflection of the ball bearings is different in installation methods. The tightness of the positive and negative coordination directly affects the size of the bearing gap, which is related to the operating accuracy and service life of the bearings.
2. Angular contact ball bearings installation method
a. Face-to-face installation
The width side is outside, the narrow side is inside, and the other is narrow. The wide edge is outside, that is, the narrow end is facing the narrow end. It is face -to -face contact. During the installation, the contact angle of the bearing converges in the direction of the rotary axis, and its support angle is small. Because the internal country of the bearing extends out of the outer garden, when the two bearing foreign countries are tightened together, the original gap in the outer ring is eliminated, which can increase the pre -load of the bearings. The shaft system of this method is simple in structure and easy to disassemble and adjust. However, the heating and elongation of the shaft will reduce the axial gap of the bearings and even get stuck.
b. Back-to-back installation
The narrow side is outside, the width side is inside, and the other is the width inside, the narrow side is outside, that is, the wide end is facing the wide end surface, which is the back-to-back contact. During the installation, the contact angle of the bearings spreads along the direction of the rotary axis, which can increase its radial and axial support angle rigidity, provide a bearing configuration with relatively high rigidity, and can withstand the overturning torque. During installation, you need to learn the grip to contact the gap adjustment technique of the ball, because the thermal expansion of the shaft will increase the axial gap of the bearings. The anti -installation structure is more complicated, and the installation and adjustment are inconvenient.
2022-12-07
