Quality inspection of cylindrical roller bearings

02-09-2022

1.Size: inner diameter, outer diameter, height

Cylindrical roller beairng

2.Clearance

The so-called bearing clearance, that is, the bearing is not installed in the shaft or bearing box, the inner ring or outer ring of its side fixed, and then it is not fixed side to do radial or axial movement when the amount of movement. According to the direction of movement, can be divided into radial clearance and axial clearance.

Rolling mill bearings

3. Rotational flexibility

In ideal conditions most types of bearings, the relative motion between the ring and rolling body is produced by rolling friction, so in the rotation, should be brisk and no blocking phenomenon. However, due to errors in the machining process and improper assembly of the bearing parts, the rotational flexibility of the bearing will be affected. In the assembled bearing, if the cage clips the ball, the friction between the cage and the guiding surface and the bearing has residual magnetism will also make the bearing rotate inflexibly, which will lead to the bearing's service life decreasing.

Rolling element

4. Surface quality

The surface quality of bearings includes surface roughness, various cracks (material cracks, forging cracks, heat treatment cracks, grinding cracks, etc.), various mechanical injuries (abrasions, scratches, bruises, pressure wounds, lines, etc.), various mechanical injuries (abrasions, scratches, bruises, pressure wounds, etc.), burns, black skin, rust, pitting, riveting quality and sign quality, etc.

5. Hardness

Hardness is an important quality indicator of the bearing. It is a comprehensive reflection of the bearing material, thermal processing quality.

Cylindrical roller beairng

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