Bearing model meaning and bearing model JIS code of the system

Bearing model meaning and bearing model system of JIS code bearing type system including bearings, bearing auxiliary code, dimensional accuracy, lubrication and 1, bearing the basic model 1) Bearing material code no marked: JUS2 or equivalent bearing steel DD: belong to martensite stainless steel KK: development of MKJ3 steel CE: SUJ2 or equivalent bearing steel ring, ceramic ball, 2) Bearing series code (radial rolling bearing Metric series) A - : very R - thin ( RF- ) Type: thick ( Thick flange type) L- ( 如果- - - - - - ) : thin ( Thin flange type) AF - LNR - : very thin flange type : thin, and the outer ring snap ring RNR - Type: thick, and the outer ring snap ring radial rolling bearing ( The imperial series) RI: ordinary English series RIF: T - flanged type thrust bearing ZB - special type 作为- - - - - - Special type 3) : Basic symbol bearing outside diameter size, diameter size. For example: L - 1910 zz, diameter 10 mm, inner diameter mmri - 10 4/16 ', inner diameter 1/8 '2, 418, diameter, bearing the auxiliary model (4) Sealing dust cover code Z: steel dust cover, H: spring coil type steel dust cover, compression type S: non-contact rubber seal D: contact rubber seal P: non-contact plastic seal when two-way installation, expressed as a repeat code, such as: ZZ5) Special voice code W: Y: than the standard width model SD than the standard narrow model: special design specifications without said: standard sound extremely don't MT: low noise motor specification GT: computer hard drive motor specifications, 6) Cage code R: wave type cage H: crown retainer MN: resin keep 3, dimension precision code 7) Level code P0: JIS 0 level P5: JIS grade 5 A3: ABEC 3 pa5: ABEC 5 p8) Clearance code PXX: radial clearance expressed in the ten (radial clearance of the upper and lower limits Unit: 0. 0001 ') , such as radial clearance is 5 um. . . 12. 5 um, if converted into English is 0. 0002 '- 0. 0005 ', expressed as P524, said lubrication code 9) LG lubricant code LO: oil, grease LY: no lubricant grease or oil LD: 10) Lubricant filling quantity of code without said: standard: 25 vol % - 35卷% X: 5卷% - 10卷% L: 10卷% - 15卷% T: 15卷% - 20卷% H: 40卷% - 50卷% J: 50卷% - 60 vol % F: 100 vol % JIS series code in the specific models in the bearing will be marked with the corresponding JIS type, convenient user against other brand miniature bearing into the model, you can refer to the bearing model meaning. 1, the prefix code without sign: SUJ2 steel or equivalent performance steel CE: outer ring, SUJ2 steel or equivalent performance bearing steel; Ball, ceramic ball 2, model 67,68,69,60,62,63,643 bearing series, number 4, the cage, MN: plastic cage 5, sealing Z: two side with dust cover S: rubber seal, non-contact D: rubber this bullying, contact if they are on both sides of the seal, ZZ, SS, DD6, special structure, NR: outer ring groove stop and stop ring 7, clearance M2:3 um. . . 8 umm3:5um - 10 umm4:8um - 13 umm5: 13 - Above 20 um said lubrication code reference bearing type system. More than in NMB bearing types of content are for reference only, if you have any other question welcome counseling online customer service!