FAG bearing code and INA supplementary code description

The bearing code is composed of basic code, pre-code and post-code. The basic code indicates the basic type, structure and size of the bearing. The prefix code indicates that the bearing parts are placed before the basic code. The rear code indicates the bearing structure shape, size, seal, cage, tolerance, clearance, heat treatment, packaging, technical requirements, etc. When there is a change, the supplementary code is added after the basic code of the bearing. Ming FAG front code The front code R is placed directly before the basic code of the bearing, and the rest of the front codes are separated from the basic code by small dots. GS--Thrust cylindrical roller bearing race. Example: GS.81112K -- combination of rolling elements and cages. Example: Thrust cylindrical roller and cage assembly K.81108R -- Bearings without separable inner or outer rings. Example: RNU207-NU207 bearing without inner ring WS--thrust cylindrical roller bearing shaft ring. Example: WS.81112 suffix code FAG suffix code is placed behind the basic code. When there are multiple sets of suffix codes, they should be arranged from left to right in the order of the suffix codes listed in the bearing code table. Some suffix codes are separated from the basic code by a small dot. (1) Internal structure A, B, C, D, E Internal structure change example 1: Angular contact ball bearing 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 thrust spherical roller bearings N309E, 21309E, 29412E - enhanced design, bearing load capacity increased. VH-roller self-locking full complement cylindrical roller bearings (the diameter of the complex circle of the roller is different from the standard bearing of the same type). Example: Outline dimensions and external structure DA of NJ2312VH(2) bearings—separable double-row angular contact ball bearings with double-half inner rings. Example: 3306DADZ--cylindrical outer diameter roller bearing. Example: ST017DZK--tapered bore bearing, taper 1:12. Example: 2308KK30--tapered bore bearing, taper 1:30. Example: 24040K302LS-- double inner ring, double row cylindrical roller bearing with dust cover on both sides. Example: NNF5026C.2LS.V-internal structure change, double inner ring, with dust cover on both sides, full complement double row cylindrical roller bearing N-- bearing with stop groove on the outer ring. Example: 6207NNR--A bearing with snap grooves and snap rings on the outer ring. Example: 6207NRN2-- four-point contact ball bearing with two snap grooves on the outer ring. Example: QJ315N2S--A bearing with lubricating oil grooves and three lubricating oil holes in the outer ring. Example: 23040 is. Spherical roller bearings whose outer diameter D is greater than or equal to 320 mm are not marked with SX -- the external dimensions meet the requirements of international standards. Example: 32036XZ--Technical conditions for special structures. Arranged in descending order from Z11. Example: Z15-stainless steel bearing (W-N01.3541) ZZ--roller bearing with two retaining rings to guide the outer ring. (3) Sealing and dustproof RSR--The bearing has a sealing ring on one side. Example: 6207RSRZR--The bearing has a dust cover on one side. Example: 6207ZR2ZR--The bearing has sealing covers on both sides. Example: 62072ZRZRN--The bearing has a dust cover on one side and a stop groove on the outer ring on the other side. Example: 6207ZRN2ZRN--The bearing has a dust cover on both sides and a stop groove on the outer ring. Example: 62072ZRN (4) cage and its material 1) entity cage. A or B is placed after the cage code, A means that the cage is guided by the outer ring, and B means that the cage is guided by the inner ring. F--Steel solid cage, guided by rolling elements. FA--Steel solid cage, outer ring guide. FAS--Steel solid cage, outer ring guide, with lubrication groove. FB--Steel solid cage, inner ring guide. FBS--Steel solid cage, inner ring guide, with lubrication groove. FH--steel solid cage, carburized and quenched. H, H1-- carburizing and quenching cage. FP--steel solid window cage. FPA--Steel solid window type cage, outer ring guide. FPB--Steel solid window type cage, inner ring guide. FV, FV1--Steel solid window cage, after aging, quenching and tempering treatment. L--Light metal solid cage, guided by rolling elements. LA--Light metal solid cage, outer ring guide. LAS--Light metal solid cage, outer ring guide, with lubrication groove. LB--Light metal solid cage, inner ring guide. LBS--Light metal solid cage, inner ring guide, with lubrication groove. LP--Light metal solid window cage. LPA--light metal solid window type cage, outer ring guide. LPB--Light metal solid window cage, inner ring guide (thrust roller bearing is shaft guide). M, M1-- brass solid cage. MA--Brass solid cage, outer ring guide. MAS--Brass solid cage, outer ring guide, with lubrication groove. MB--Brass solid cage, inner ring guide (thrust spherical roller bearing is shaft ring guide). MBS--Brass solid cage, inner ring guide, with lubrication groove. MP--Brass entity straight pocket cage. MPA--Brass solid straight pocket cage, outer ring guide. MPB--Brass solid straight pocket cage, inner ring guide. T--Phenolic laminated cloth pipe solid cage, rolling element guide. TA--Phenolic laminated cloth tube solid cage, outer ring guide. TB--Phenolic laminated cloth tube solid cage, inner ring guide. THB--Phenolic laminated cloth tube pocket type cage, inner ring guide. TP--Phenolic laminated cloth tube straight pocket cage. TPA--Phenolic laminated cloth tube straight pocket cage, outer ring guide. TPB--Phenolic laminated cloth tube straight pocket cage, inner ring guide. TN--engineering plastic molded cage, rolling body guide, with additional numbers to indicate different materials.

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