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Search verified bearing designations and technical parameters across SKF, FAG, INA, TIMKEN, NSK, KOYO, IKO, NACHI and NTN.

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Bearing designation

Closure group

Brand

SKF979FAG627INA373TIMKEN304KOYO251IKO134NSK105NACHI35NTN6EZO1

Product family

Super-precision angular contact ball bearings311Deep groove ball bearings220Ts - tapered single114Radial deep-groove ball106Cylindrical roller bearings85Angular contact ball bearings72Radial srb43Tapered roller bearings43Inner rings37Deep groove ball bearings35Spherical roller bearings35Tdo - tapered double outer28Angular contact ball bearings26Bushings, thrust washers and strips24Self-aligning ball bearings24Axial deep groove ball bearings22Single row deep groove ball bearings22Cylindrical roller bearings20Rod ends20Radial spherical plain bearings19Super-precision angular contact thrust ball bearings17Single-row / metric series16Thin section bearings16Super-precision cylindrical roller bearings13Inner rings / metric series / jr,im.p,jr.js1,jrz.js112Machined type needle roller bearings12Matched pair / back-to-back / with machined cage12Matched pair / face-to-face / with machined cage12Matched pair / tandem / with machined cage12Single-row / with machined cage12Shell type needle roller bearings11Thrust ball bearings11Single direction / with flat back faces10Single-row / nu10Support rollers (yoke-type track rollers)10Standard type crossed roller bearings9Carb toroidal roller bearings8Needle roller bearings with separable cage8Self-aligning ball bearings8Separable roller followers8Single-row / nup8Single-row / open type8Angular contact ball7Automotive bearings7Needle roller bearings7Single-row / nh7Single-row / nj7Slim type crossed roller bearings7Matched pair / back-to-back / with pressed cage6Matched pair / face-to-face / with pressed cage6

Detailed product type

Deep groove ball bearings476Tapered roller bearings257Angular contact ball bearings187Cylindrical roller bearings179Spherical roller bearings99Needle roller bearings73Matched set of two super-precision, high-capacity, d design, single row angular contact ball bearings72Deep groove ball bearing with seals or shields61Flanged housing unit51Self-aligning ball bearings49Inner rings46High-speed spindle bearings45Axial deep groove ball bearings43Radial insert ball bearing42Matched set of two super-precision, high-speed e design, single row angular contact ball bearings34Single row cylindrical roller bearing, nu design33Spherical plain bearings33Spindle bearings31Super-precision, high-capacity, universally matchable single row angular contact ball bearing31Single row cylindrical roller bearing, nj design29Plummer block housing units26Single row angular contact ball bearing25Single row tapered roller bearing24Axial angular contact ball bearing22Crossed roller bearings22Matched set of two super-precision, high-speed e design, single row angular contact ball bearings with seals21Ball bearing units20Super-precision, high-capacity, universally matchable single row angular contact ball bearing with seals20Double row angular contact ball bearing19Linear ball bearing19Matched set of two super-precision, high-capacity, d design, single row angular contact ball bearings with seals19Double row angular contact ball bearing with seals or shields17Bush16Matched set of three super-precision, high-capacity, d design, single row angular contact ball bearings16Rod ends16Roller followers16Matched set of four super-precision, high-capacity, d design, single row angular contact ball bearings15Super-precision, high-speed e design, universally matchable single row angular contact ball bearing15Adapter sleeves13Take-up housing unit13Super-precision, high-capacity, single row angular contact ball bearing12Yoke type track roller12Axial needle roller bearings11Deep groove ball bearing with filling slot11Automotive bearings10Combined needle roller bearings10Needle roller/axial cylindrical roller bearing10Spherical roller bearing with relubrication features10Deep groove ball bearing with filling slots and integral sealing9Needle roller cage assembly9Radial spherical plain bearing, requiring maintenance, sealed, metric sizes9Single row cylindrical roller bearing, nup design9Special single row tapered roller bearing9Spherical roller bearing with tapered bore and relubrication features9Super-precision cartridge units with a flanged housing for screw drives9Super-precision, high speed, e design, universally matchable single row angular contact ball bearing with seals9Deep groove ball bearing with snap ring and integral sealing8Roller bearings8Self-aligning ball bearing with tapered bore8Deep groove ball bearing for high temperature applications with shields on both sides7

Bearing dimensions

Minimum and maximum (mm)

Inside d

Outside D

Width B

Height H

Technical attributes

Series

6210696310683654060104032010X22620020630020EX2699020321017EX26850176000167210167310162231015331015LM10490014NU21014GE5013SL0450101332010123231012222101139511IRT11LRT1120010300103021010303101031310103221010231094559M205100921310822108332107CRBS7GE50-DO7HC62107WS22210733010664106CRBC6EX270996HCB719106HCM70106HCM719106KT6NAST6NJ23106NJ3106SL1850106TA6VCM70106VCM71910633110591005HCB70105NA49105

Sealing2RS vs ZZ selection guide →

Without574Seal on both sides229Open220Without — Not sealed1722Z — Non-contact shield on both sides61Shield on both sides58Sealed432RSR — Contact seal on both sides42Shielded34Shield on one side312RSD — Non-contact sealed on both sides and greased “for life”242HRS — Contact seal on both sides21Z — Non-contact shield on one Side132RS — Contact seal on both sides7Seal on one side7Shielded ZZ7Contact rubber seals on both sides5Metal shields on both sides5Non-contact rubber seals on both sides5Non-contact sealed5One contact seal5One non-contact seal5One shield5RSR — Contact seal on one side5Two contact seals5Two non-contact seals5Two shields52RSR — Seals on both sides, normal temperature4Contact sealed4Extremely light contact sealed4HRS — Contact seal on one side42VSR — Seals on both sides, high temperature32RZ — Non-contact seal on both sides2Sealed 2RS2Sealed type22BRS — Non-contact seal on both sides12RS — Contact lip seals on both sides12Z — Minimal gap seal on both sides1Double contact sealed (DDU)1Double shielded (ZZ)1

Internal clearance

CN206CN (Group N) — Normal internal clearance154C3145C3 (Group 3) — Internal clearance larger than CN127C4 (Group 4) — Internal clearance larger than C338C422C112Between C2 and CN9Multiples of C59C2 (Group 2) — Internal clearance smaller than CN7C24C1 (Group 1) — Internal clearance smaller than C23C3H3C3L2NSTD2C2L1C4H1CM (Group M) — Internal clearance limited for electric motors1CNH1Special1

Precision class

PN — Normal (ISO 492:2023)301P6 — Class 6 (ISO 492:2023)115JIS, Class 082P4S — Tolerance class P4S, FAG standard better than P4 to ISO 492:202372ABMA Class K49P6 and tighter width tolerance32P628P6X — Class 6X (ISO 492:2023)28ABMA Class 224Normal20ABMA Class N16ABMA Class 311P5 — Class 5 (ISO 492:2023)11ABMA Class 06SP — Tolerance class SP5P4 — Class 4 (ISO 492:2023)4ABMA Class B2ABMA Class C2Normal, bore to P5 and outside diameter P61Standard1

Cage

Sheet metal266Steel cage239JN — Steel sheet metal191Non-metallic118Standard — Sheet steel cage, window cage, roller-guided80T — Laminated fabric cage72Machined brass59TVH — Solid cage made of glass-fiber reinforced polyamide PA6644Steel43Pressed steel40JPA — Sheet metal cage30TVP2 — Solid Window Cage made from PA6629M1 — Two Piece Brass Cage Roller Guided27Brass cage23JP — Steel sheet metal18Brass or non-metallic composite16TVP — Solid cage made of glass-fiber reinforced polyamid PA6615Without15MP — Solid brass cage, ball guided13JH — Steel sheet metal12Full Complement11Low Carbon Steel11M — Solid brass cage, rolling element guided11TVP — Plastic cage9M — Brass Cage7MPA — Solid brass cage, outer ring guided7Stamped stainless steel7Carbon Steel6Polyamide 666Brass sheet metal4pressed steel cage4TVP — Polyamide cage4TVPB — Plastic cage4Stainless Steel cage3Standard — Polyamide cage3TVH — Solid cage made of glass-fiber reinforced polyamid PA663TVP — Cage made of glass-fiber reinforced plastic, window cage3M — Solid brass cage, ball guided2Machined steel2Polyamide 46 resin2

Bearing material

Bearing steel535Hybrid (ceramic balls)141High Carbon Chrome Steel79High Carbon Chromium Bearing Steel28GG — Grey cast iron15Carbon Steel11Chromium Molybdenum Steel11High temperature steel9Stainless steel7Hybrid (ceramic rollers)5Copper or Brass4High-carbon chromium bearing steel1Steel1

Lubricant

None581Grease247Without — Bearing not greased153GA13 — Ball bearing and insert bearing grease60GA21 — Grease for super precision bearings, standard19Lubricating grease17L038 — Grease (L038/customer specific)16L207 — Low noise high-temperature grease, interchangeable with grease L06914L138 — Grease (L138/customer specific)10Solid lubricant9L140 — Grease (L140/customer specific)6L285 — Grease (L285/customer specific)6L069 — Low noise high-temperature grease, interchangeable with grease L2074L055 — Grease (L055/customer specific)3Solid Oil3Without — Not greased3FD — Grease with food application approval to NSF H12L408 — Grease (L408/customer specific)2Food grade grease1L055 — Greased with Arcanol MULTITOP (L055)1L100 — Grease (L100/customer specific)1L195 — Grease (L195/customer specific)1L404 — Grease (L404/customer specific)1L506 — Grease (L506/customer specific)1

Performance

Dynamic load ≥ kN

Static load ≥ kN

Limit speed ≥ r/min

Mass ≤ kg

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