Several common identify category method of rolling bearing, a bearing knowledge

According to the rolling bearing ( Imported bearing) Structure type classification ( 1) Imported bearings can bear the load according to its direction or nominal contact Angle different, divided into: 1) The centripetal bearing - - - - - - - - - - - - - - - - - - - Important is used to bear radial load of rolling bearings, the nominal contact Angle from 0 to 45. According to the nominal contact Angle is different, is divided into: radial bearing - contact - - - - - - - - - - - - - - - - - - Nominal centripetal bearing contact Angle 0: radial angular contact bearings - - - - - - - - - - - - - - - - - - - Nominal contact Angle is greater than 0 to 45 centripetal bearing. 2) Thrust bearing - - - - - - - - - - - - - - - - - - - Important is used to carry axial load of rolling bearings, the nominal contact Angle is greater than 45 to 90. According to the different nominal contact Angle is divided into: the axial bearing - contact - - - - - - - - - - - - - - - - - - Nominal contact Angle for the thrust bearing of 90: - thrust angular contact bearings - - - - - - - - - - - - - - - - - - Nominal contact Angle is greater than 45 but less than the thrust bearing of 90. ( 2) According to the rolling element bearing varieties, can be divided into: 1) Ball bearing - - - - - - - - - - - - - - - - - - - For roller ball: 2) Roller bearing - - - - - - - - - - - - - - - - - - - For roller roller. Roller bearing press roller variety, is divided into: roller bearing - - - - - - - - - - - - - - - - - - - Rolling body is cylindrical roller bearing, cylindrical roller of the ratio of length to diameter less than or equal to 3; Needle roller bearing - - - - - - - - - - - - - - - - - - Is needle roller bearings, needle roller of the ratio of length to diameter is more than 3, but less than or equal to 5 mm in diameter; Tapered roller bearings - - - - - - - - - - - - - - - - - - Rolling body is tapered roller bearing; Spherical roller bearings are spherical roller bearing roller one by one. ( 3) Import according to whether the task bearing, is divided into: 1) Self-aligning bearing - - - - - - - - - - - - - - - - - - - Raceway is spherical shape, can adapt to the Angle between the two raceway axis deviation and angular motion bearing; 2) The self-aligning bearing ( Rigid bearing) - - - - - - - - - - - - - - - - - - - - - - - - Can the impedance between the raceway bearing axis Angle deviation. ( 4) Imported bearing according to the number of columns of roller, can be divided into: 1) Single bearing - - - - - - - - - - - - - - - - - - - Have a list of rolling element bearing; 2) Double row bearings - - - - - - - - - - - - - - - - - - - Have two columns of rolling element bearing; 3) Multiple columns bearing - - - - - - - - - - - - - - - - - - - Have more than two columns of rolling element bearings, such as three, four row bearings. ( 5) Whether imported bearing according to their components, respectively, can be divided into: 1) Bearing - - - - - - - - - - - - - - - - - - - Have bearing parts respectively; 2) Not bearing - respectively - - - - - - - - - - - - - - - - - - After the form a complete set of bearing in the final, ring are not any free bearing, respectively. ( 6) Import bearings according to its structural shape ( Such as presence of loading slot, presence of inner and outer ring and ring shape, the structure of the guard, even without maintaining aircraft, etc. ) Also can be divided into a variety of structural types. 2. According to rolling bearing size classification bearing according to the diameter size, divided into: ( 1) Miniature bearing - - - - - - - - - - - - - - - - - - - Nominal diameter size of size 26 mm below the bearing; ( 2) Small bearings - - - - - - - - - - - - - - - - - - - Size scale for 28 - nominal diameter 55 mm bearing; ( 3) Small and medium-sized bearings - - - - - - - - - - - - - - - - - - - Size scale for 60 - nominal diameter 115 mm bearing; ( 4) Large bearing - - - - - - - - - - - - - - - - - - - Nominal diameter size size is 120 - The 190 mm bearing ( 5) Large bearing - - - - - - - - - - - - - - - - - - - Nominal diameter size size is 200 - 430 mm bearing; ( 6) Oversize bearings - - - - - - - - - - - - - - - - - - - Nominal diameter size scale for more than 440 mm bearing.