FAG bearing rear number suffix code description (1) the internal structure A, B, C, D, E Structure Changes Example 1: angular contact ball bearings 7205C, 7205E, 7205B, C-15 degree contact angle, E-25 degree contact angle, B-40 degree contact angle. Example 2: cylindrical roller, spherical roller and spherical roller thrust bearings N309E, 21309E, 29412E-enhanced design, the bearing load capacity increased. VH-full of self-locking roller cylindrical roller bearings (roller diameter complex is different from the standard bearing the same model.) Example: NJ2312VH (2) FAG bearing dimensions and external structure DA-double semi-inner ring with a detachable double row angular contact ball bearings. Example: 3306DA DZ-diameter cylindrical roller bearings. Example: ST017DZ K-tapered bore bearing, taper 1:12. Example: 2308K. K30-tapered bore bearing, taper 1:30. Example: 24040K30. 2LS-double inner ring, two with a dust cover of the double row cylindrical roller bearings. Example: NNF5026C.2LS.V-internal structural changes, two inner, two with a dust cover, full roller Double row cylindrical roller bearings. N-band groove on the outer ring of the bearing. Example: 6207N. NR-outer ring with a groove and snap ring bearings. Example: 6207NR. N2-outer groove on with two four-point contact ball bearings. Example: QJ315N2. S-outer ring with lubrication groove and three lubrication holes in the bearings. Example: 23040 is. Bearing outside diameter D greater than or equal 320 mm self-aligning roller bearings are not marked S. X-Dimension line with international standards. Example: 32036X. Z. .- special structure of the technical conditions. Ordered from the Z11 down from the order. Example: Z15-stainless steel bearings (W-N01.3541). ZZ-roller bearing outer ring with two guide rings. (3) Seal and Dust RSR-bearing side with seals. Example: 6207RSR. ZR-bearing side with the dust cover. Example: 6207ZR. 2ZR-bearing sides with sealing covers. Example: 62072ZR. ZRN-bearing side with dust cover, the other side of the outer ring with a groove. Example: 6207ZRN. 2ZRN-bearings on both sides with a dust cover, the outer ring with a groove. Example: 62072ZRN. (4) cage and materials 1) solid cage. A or B after the code placed in the cage, A indicated by the outer ring guided cage, B said cage from the inner guide. F-steel solid cage, rolling element guide. FA-steel solid cage, outer ring and guide. FAS-steel solid cage, outer ring guide, with a lubrication groove. FB-steel solid cage, the inner guide. FBS-steel solid cage, inner guidance, with a lubrication groove. FH-steel solid cage, the carburizing and quenching. H, H1-carburized cage. FP-steel solid window type cage. FPA-steel solid window type cage, outer ring and guide. FPB-steel solid window type cage, inner guidance. FV, FV1-steel solid fenestrae cage, the aging, quenching and tempering. L-light metal solid cage, rolling element guide. LA-light metal solid cage, outer ring and guide. LAS-light metal solid cage, outer ring guide, with a lubrication groove. LB-light metal solid cage, the inner guide. LBS-light metal solid cage, inner guidance, with a lubrication groove. LP-light metal window type cage system of entities. LPA-light metal solid window type cage, outer ring and guide. LPB-light metal window type cage system of entities, inner guidance (thrust roller bearing axle boot). M, M1-brass solid cage. MA-brass solid cage, outer ring and guide. MAS-brass solid cage, outer ring guide, with a lubrication groove. MB-brass solid cage, the inner guide (Thrust roller bearing axle ring boot). MBS-brass solid cage, inner guidance, with a lubrication groove. MP-brass solid straight Pockets cage. MPA-pocket straight solid brass cage, outer ring and guide. MPB-pocket straight solid brass cage, inner guide. T-phenolic cloth laminated tube solid cage, rolling element guide. TA-phenolic cloth laminated tube solid cage, outer ring and guide. TB-phenolic cloth laminated tube solid cage, the inner guide. THB-phenolic cloth laminated tube pocket hole cage, the inner guide. TP-phenolic cloth laminated tube straight Pockets cage. TPA-phenolic cloth laminated tube straight Pockets cage, outer ring and guide. TPB-phenolic cloth laminated tube straight Pockets cage, inner guidance. TN-plastic mold injection cage, ball guide, with additional numbers indicate different materials. TNH-plastic self-locking pocket hole cage. TV-glass fiber reinforced polyamide solid cage, ball guide. TVH-glass fiber reinforced polyamide self-lock pocket groove solid cage, ball guide. TVP-glass fiber reinforced polyamide Window solid cage, ball guide. TVP2-glass fiber reinforced polyamide solid cage, the roller guide. TVPB-glass fiber reinforced polyamide solid cage, the inner guide (the thrust roller bearing axle boot). TVPB1-glass fiber reinforced polyamide solid Window cage, shaft guide (thrust roller bearings.) 2) stamping cage J-steel stamping cage. JN-Deep groove ball bearings riveted cage. 3) changes in cage After adding code in the cage, or inserted in the middle of the cage code number cage structure after that change. These figures only for the transitional period, for example: NU1008M1. (5) no cage bearings V-filled rolling bearings. Example: NU207V. VT-band isolation ball or roller bearings rolling filled. Example: 51120VT. (6) tolerance levels (including dimensional accuracy and precision of rotation) P0-tolerance level prescribed in line with international standards ISO 0, code is omitted, does not mean that. P6-line with international standards ISO tolerance class 6 requirements. P6X-tolerance level prescribed in line with international standards ISO 6X class tapered roller bearings. P5-line with international standards ISO tolerance class 5 requirements. P4-tolerance level prescribed in line with international standards ISO 4. P2-tolerance level in line with international standards ISO Level 2 (excluding tapered roller bearings.) SP-dimensional accuracy equivalent to 5, rotation accuracy equivalent to four (double row cylindrical roller bearings.) UP-dimensional accuracy equivalent to 4, rotation accuracy is higher than 4 (double row cylindrical roller bearings.) HG-dimensional accuracy equivalent to 4, rotation accuracy is higher than 4, less than 2 (spindle bearings)
