As a key transmission component in machine tool spindle bearings, angular contact ball bearings can be divided into single row angular contact ball bearings, double row angular contact ball bearings, etc. according to actual usage needs. Among them, double row angular contact ball bearings are more commonly used in the mechanical industry and must be installed correctly. So, what is the installation method?

What are the installation methods for double row angular contact ball bearings?

1. The wide end faces of the two bearings are installed back-to-back, and the contact angle line of the bearings is along the direction of the rotation axis, which can increase the rigidity of the radial and axial support angles. This installation method has outstanding resistance to deformation.

2. The narrow end faces of the two bearings are installed face to face, and the contact angle line converges along the direction of the rotation axis, resulting in low rigidity. Due to the inner ring of the bearing exceeding the outer ring, compressing the outer ring together can eliminate the original clearance and increase the preload of the bearing;

3. The wide end faces of the two bearings are installed in series in the same direction, and the contact angle lines are parallel and in the same direction, which allows the two bearings to share the load in the same direction and greatly increases the bearing capacity. This installation form will have a certain impact on axial stability, so the series arrangement of bearings must be installed opposite each other at both ends of the shaft.

Detailed installation steps for double row angular contact ball bearings

1. Before installing the bearings, they should be cleaned with gasoline or kerosene and wait until they are dry before use to ensure the lubrication of the bearings.

2. When applying lubricating grease to bearings, in order not to affect the lubrication effect of the bearings, high-performance lubricating grease such as impurity free, anti-oxidation, rust proof, and extreme pressure should be used. The filling amount is generally 30% -60% of the bearing volume, and cannot be too much or too little, otherwise it will affect the operation of the bearings.

3. Install the bearing seat onto the machine tool and install the bottom gasket. It is also recommended to add lubricating grease to the bottom gasket.

4. Install the bearing into the bearing seat according to the predetermined installation method, which should be selected based on actual usage needs. Do not operate randomly, otherwise it will affect the performance of the bearing.

5. Gently tap the bearing ring to match the bearing with the seat hole. Special tools must be used to control the force and avoid excessive tapping, which may damage the bearing parts.

6. Install washers on the bearing seat of double row angular contact ball bearings to ensure axial positioning of the wheel hub. The gaskets should be installed one by one, and the thickness direction of the gaskets should be perpendicular to the axial direction.