Introduction to Chinese domestic bearing named suffix code -

Bearing the suffix code by the basic code, codes of front and rear codes, the basic code of said bearing series ( Including the type) Inner diameter size and contact Angle; Front code said specific bearing; Post code is bearing the structure shape, size, material, sealing, cage, tolerance, clearance, heat treatment, lubrication, technical requirements, such as have change, after bearing the basic code to add complementary code. 1. Front code F flange outer ring of the deep groove ball bearings, Applicable to d less than 10 mm) Example: F605. HR tapered roller bearings, high load cases: HR30207J. MF flange outer ring of specified size deep groove ball bearings, D less than 10 mm) Example: MF52. MR specific size deep groove ball bearings, Applicable to d less than 10 mm) Example: MR31. 2. Post code ( 1) The internal structure of A bearing of the internal design is different from standard. Angular contact ball bearing, A contact Angle of 30 degrees. A5 angular contact ball bearing, the contact Angle of 25 degrees. B angular contact ball bearing, the contact Angle of 40 degrees. C angular contact ball bearing, the contact Angle of 15 degrees. C tapered roller bearings, the contact Angle of 20 degrees. D taper roller bearing, the contact Angle of 28 degrees. C, CA ( Entities with brass cage) CD ( With punching cage) High load spherical roller bearings. E high load cylindrical roller bearing. H high load thrust spherical roller bearings. J the small end of the tapered roller bearing outer ring raceway diameter, Angle, outer ring width in accordance with ISO regulation. （ 2) Material g ring, rolling body for carburizing steel. H ring, rolling body is stainless steel. （ 3) Cage M copper alloy solid cage. W punch retainers. V no cage. （ 4) Seal, dust cover Z, ZS side plate dust cover. ZZ, ZZS sides with steel dust cover. DD, DDU two sides with contact rubber seal. V is a non-contact rubber seal. V. v. sides with non-contact rubber seal. （ 5) Ring shape K cone hole, taper 1:12. K30 cone hole, taper 1:30. On the E ring incision or oil hole. E4 outer ring with oil tank, oil hole. N outer diameter with locking slot. NR outer diameter with locking slot, snap ring. （ 6) Cooperate and liner DB back-to-back installed in pairs. DF face-to-face installed in pairs. DT series installed in pairs. + K outer ring gasket. Ring liner + L. + in KL, outer ring gasket. （ 7) Clearance C1 centripetal bearing radial clearance, smaller than C2 clearance. Above is stainless steel bearing production experience for many years, sorting out the Chinese domestic bearing suffix named code. Consultation please contact bearing orders.