Why are the bearings rolling separately?
The radial contact bearings are radial bearings with nominal contact angles of 0, and radial angular contact bearings are radial bearings with nominal contact angles greater than 0 to 45. Axial contact bearings for nominal contact angle of 90 thrust bearings, thrust angle contact bearings for nominal contact angle greater than 45, but less than 90 of thrust bearings.According to the shape of the rolling body can be divided into ball bearings and roller bearings. According to the types of roller roller bearings: cylindrical roller bearings, needle roller bearings, tapered roller bearings and spherical roller bearing.According to the work can be divided into aligning - self-aligning bearing raceway is spherical shape, can adapt to the two rolling bearing channel angular deviation between the axis lines and angular movement and non self-aligning bearing (rigid bearing) - bearing raceway axis line impedance angle offset.
The main reason is the difference between the frictional properties of the moving elements of the bearings, which can be divided into rolling bearings and sliding bearings. Sliding bearings for surface contact friction, rolling bearings for point to line contact friction.Plain bearings, both inside and outside the ring, there is no rolling body, usually made of wear-resistant materials. Often used in low speed, heavy load and filling lubrication and difficult maintenance of mechanical rotating parts.The rolling bearings are divided into radial bearings and thrust bearings according to the load direction or nominal contact angle that they can bear.
According to the number of rolling columns, it is divided into single row bearings, double row bearings and multi row bearings.According to its components (rings) can be divided into separable bearings and non separable bearings.According to its structural shape (if there is no loading groove, whether there are inner, outer ring and ring shape, edge structure, or even cage, etc.), it can be divided into a variety of structural types.According to the diameter size divided into miniature bearings (<26mm), small bearings (28-55mm), small and medium-sized bearings (60-115), large bearing (120-190mm), large bearing (200-430mm) and oversize bearing (>440mm).According to the application field, it is divided into motor bearings, mill bearings, main bearings and so on.According to the material is divided into ceramic bearings, plastic bearings, etc..
