Roller bearings are short cylindrical, conical or drum-shaped roller for rolling the rolling bearing. Mainly to the center of the short cylindrical roller, double row radial spherical roller, tapered roller and thrust roller and other structural types. Roller bearings are mainly centripetal short cylindrical roller, double row radial spherical roller, tapered roller and thrust roller and other structural types.
Roller bearing classification
1. Cylindrical roller bearings
This type of roller is mainly used for cylindrical roller bearings, roller components can also be used directly in the machine. The roller is standardized in size and can be used as a product roller for design and user selection.
Long cylindrical roller bearings
This type of roller has two kinds of shaft diameter and shaftless diameter, mainly used for long cylindrical roller bearings, roller components can also be used directly in the machinery.
2. Needle roller bearings
This type of roller is mainly used for needle roller bearings, universal joint needle roller bearings and thrust needle roller bearings, needle roller components can also be used directly in the machine. This type of roller has been serialized in size for design options. According to the needs of the bearing structure, the shape of the needle at both ends of the head shape of a cone-shaped, flat head shape, round head shape.
3. Tapered roller bearings
Is a circular cone, the taper angle is usually 1 ° ~ 4 ° 20 ', there are less than 1 ° or greater than 4 ° 20', mostly 2 °. The roller length generally does not exceed twice the diameter of the roller. This type of roller is mostly used for tapered roller bearings, large cone angle roller is basically used for thrust tapered roller bearings.
Spherical roller bearings
The rolling surface of the roller is spherical. The use of this roller bearing with self-aligning performance, can withstand a lot of load. Spherical roller sub-asymmetric and symmetrical shape, the general asymmetric large end of the spherical surface, symmetrical shape of the two sides of the flat face. Symmetrical spherical roller performance is better, and non-symmetrical type for the elimination. This type of roller is used for spherical roller bearings and thrust spherical roller bearings.
5. Spiral roller bearings
It is a special section of the strip made of hollow roller, sub-left and right-handed two. This roller is not very widely used, mainly for the impact load of the spiral roller bearings.
6. Pillar hole roller bearings
A hole in the center of a strut with a hole for mounting the post so as to be fixed to the stud base. The roller shape of a cylindrical, conical, spherical, mainly for large bearings.