Angular contact bearings using method

The size of the angular contact bearings how to measure and installed in a single set of angular contact ball bearing as an example; Outer diameter and inner diameter measuring method with single row deep groove ball bearings, angular contact width of deep groove ball bearing is called high assembly; AC contact types: based on big end, pre-tightening force on the outer heel, the actual stress is circle, the other side; On the other hand, the big end as benchmark, pre-tightening force inside is another face, the actual stress is at the outer end face. BM contact type: similar to the above situation. Characteristics and USES of angular contact ball bearing, angular contact ball bearing limit rotational speed is higher, can bear radial load and axial load at the same time, also can withstand pure axial load, its axial load capacity is determined by contact Angle, and with the contact Angle increases. Single row angular contact ball bearings can only carry axial load in one direction, when bear radial load, will cause the additional axial force, must be applied to the corresponding reverse load, therefore, this kind of bearings are generally used in pairs. Double row angular contact ball bearings can withstand the bigger radial direction load primarily radial, axial two-way joint load and torque load, it can limit shaft or shell two-way axial displacement, the contact Angle of 30 degrees. Installation Angle contact ball bearing in pairs can afford to two-way joint mainly consisting of radial load, axial load, also can withstand pure radial load. Serial configuration can only carry axial load in single direction, the other two configurations can carry axial load in either direction. This type of bearings in general by submitting users, manufacturers matching combination pairs after installation preloading interference, ring and ball in the axial preload charge state, thus increasing the support stiffness and the whole bearing as a single rotation accuracy. Specific classification and model comparison: 1, a = 15 o of angular contact ball bearings ( The type 70000 C) 2, a = 25 o of angular contact ball bearings ( 70000 AC type) 3, a = 40 o of angular contact ball bearings ( 70000 B) 4, a = 15 o high-speed sealed angular contact ball bearings ( B70000 C- Type 2 rz) 5, a = 25 o high-speed sealed angular contact ball bearings ( B70000 AC- Type 2 rz) 6, a = 15 o high-speed sealing angular contact ceramic ball bearing ( B70000 C- 2 rz/HQ1 type) 7, a = 25 o high-speed sealing angular contact ceramic ball bearing ( B70000 AC- 2 rz/HQ1 type) 8, back-to-back double angular contact ball bearing in pairs [70000 C ( AC、B） Type/DB] 9, surface by surface duplex angular contact ball bearing in pairs [70000 C ( AC、B） Type/DF] 10 series, double angular contact ball bearing in pairs [70000 C ( AC、B） Type/DT] 11, with ball gap of double row angular contact ball bearings ( The type 0000 a = 30 o) 12, no ball gap of double row angular contact ball bearings ( 0000 A type A = 30 o) 13, a belt of dust cover double row angular contact ball bearing, 0000 - Z = 30 o a) 14, the two sides with a dust cover double row angular contact ball bearing, 0000 - 2 z = 30 o a) 15, a double row angular contact ball bearings with seals ( 0000 - A = 30 o RZ type 16, two double row angular contact ball bearings with seals ( 0000 - 2 a = 30 o rz type) 17, four-point contact ball bearing ( Type QJ a = 35 o) Used to increase or balance bearing force, in pairs according to the direction of the axial force, can choose the DB installed back to back, face to face with the DF installation, DT series installation, for the machine tool spindle, commonly used installed to triple, quadruple, even with immovable installed, under normal circumstances, the axial load is a two-way street, there are few pure one-way axial load, so the angular contact ball bearings are installed in pairs. Can increase radial load capacity installed in pairs on the one hand, on the other hand can also be more targeted to provide bearing capacity, increase the toughness of the spindle.