Ball and Roller Bearings

Tapered Roller BearingsSaSbr1aEquivalent radial loaddynamicDa dbrada DbPrXFrYFaFa FaeFr Fr eX Y X Y1 0 0.4 Y2staticPor0.5FrYoFaWhen PorFr use PorFrFor values of e, Y2 and Yosee the table below.Dimensions Abutment and fillet dimensions Load Constant Axial Massseries to center load factorsISO mm mm kgda db Da Db Sa Sb ras r1asmin max max min min min min max max a e Y2 Yo (approx.)3FD 338 344 426 398 426 13 19 3 2.5 85 0.42 1.44 0.79 33.1338 344 426 398 425 13 13 3 2.5 85 0.39 1.55 0.85 31.74GD 342 344.5 462 418.5 463 15 26 4 3 104 0.46 1.31 0.72 60.24FD 358 362 446 417 446 13 19 3 2.5 90.5 0.44 1.37 0.75 34.9358 362 446 414 445.5 13 13 3 2.5 87 0.39 1.55 0.85 36.04FD 378 381 466 436 466 13 19 3 2.5 96.5 0.46 1.31 0.72 36.6Note: When selecting bearings with bearing numbers marked with " ", please consult NTN Engineering.B-145