Ball Bearing Is A Kind Of Rolling Bearing

Ball bearings are a kind of rolling bearing, ball balls are fitted in the middle of the steel ring and outer steel ring, can withstand the larger load. Also known as ball bearings. Ball bearings than the journal bearing friction frictional resistance is small, so the same speed, the friction will produce a relatively low temperature. Ball bearings have a single row to the heart, double row of the spherical surface, to the heart thrust, thrust and thrust to the heart and other structural types (see photo). This kind of bearing is mainly used to bear the radial load, but also can not bear the axial load, suitable for multi-support and flexible deformation of the larger drive shaft. Two-way thrust ball bearings have two live rings, one tight ring, two rolling elements and two cage.

Rolling bearings with steel balls for rolling elements. Ball bearings have a single row to the heart, double row of the spherical surface, to the heart thrust, thrust and thrust to the heart and other structural types.

① single row radial ball bearings: compact structure, easy to use, the most widely used. Mainly used to bear the radial load, but also can withstand a certain amount of axial load. In high-speed devices, it can also be used instead of thrust bearings. This kind of bearing friction resistance is small, the limit speed is high, is suitable for the double bearing shaft with large rigidity. The inclination of the shaft relative to the bearing housing is allowed to be within the range of 8 'to 16'.

② double row of radial ball bearings: it has two rows of steel ball, outer ring raceway is the center of the bearing for the heart of the spherical, inner and outer ring axis tilt within 2 ° ~ 3 ° can still work, good self-aligning performance. This kind of bearing is mainly used to bear the radial load, but also can not bear the axial load, suitable for multi-support and flexible deformation of the larger drive shaft.

③ to the heart thrust ball bearings: can bear the radial load-based radial axial joint load, the higher the speed limit. Ball and outer ring nominal contact angle

Divided into 12 °, 26 ° and 36 ° of the three kinds of contact angle can withstand large axial load.

④ thrust ball bearings: one-way and two-way two. Two-way thrust ball bearings have two live rings, one tight ring, two rolling elements and two cage. Tight ring and shaft tight sets, live ring installed in the bearing seat, the inner diameter of the circle than the tight ring diameter of 0.2 to 1 mm. One-way thrust ball bearings can only withstand one-way axial load, two-way thrust ball bearings can withstand axial load in both directions. This type of bearing is not suitable for high-speed work, high-speed should use thrust to the heart ball bearings.

⑤ thrust to the heart ball bearings: contact angle

Greater than 45 °, can withstand axial load-based axial radial joint load. The limit speed is higher than the thrust ball bearing.