Inch Series - norfolkbearings.com

1 75 TAPERED ROLLER BEARING NUMBERING SYSTEM1. PREFIX ET: NTN Endurance tapered roller bearings, case hardened material 4T: NTN 4-Top tapered roller bearings, case hardened material E: Case hardened steel T: Internationally interchangeable dimensions2. Series H: Heavy HH: Heavier than heavy HM: Heavy-medium L: Light LM: Light medium M: Medium ISO: Metric Series 320X, 302, 322, 303 and 3233. SUFFIX A: Different bore, , width or radius from basic part number PK: Class K for J-Line PXn: Special tolerance, n; from 1 onward S: Different bore, OD, width or radius from basic part number U: ISO Series ; internationally interchangeable through hardened steel W: Slot or keyway X: Different bore, , width or radius from basic part number -0: AFBMA class 0 -00: AFBMA class 00 -2: AFBMA class 2 -3: AFBMA class 3 -4: AFBMA class 4 ISO SeriesInch Series76 SERIES4 TUnits: INCHES MillimetersTAPERED ROLLER BEARINGS These maximum fillet radii will be cleared by the cone or cup radii.

2 * in. ( mm) front radius Cone Bore Cone Max. shaft Cup Cup Max. housing Overall Number Width fillet radius Number Width fillet radius Width d B R D b r T 4T-335 Series 4T-335 .8820 .03 4T-332 .7018 .05 .8268 .6 4T-336 .8820 .03 4T-332A .8268 .09 .9518 .6 4T-339 .8820 .03 .6 4T-342 .8820 .14 4T-342A .14 4T-342S .8820 .14 4T-344A .8820 .03 .6 4T-355 Series 4T-355 .8540 .09 4T-352 .8586 .09 .9055 4T-355X .8540.

3 14 4T-354A .6875 .05 .8125 4T-359A .8540 .14 4T-354X .6875 .06 .8125 4T-359S .8540 .09 4T-365 Series 4T-366 .8750 .09 4T-362 .6250 .08 .7874 4T-368 .8750 .06 4T-362A .6501 .05 .8125 4T-368A .8750 .14 4T-363 .7874 .03 .7874 .8 4T-368S .8750 .08 4T-369A .8750 .14 4T-369S .8750 .09 4T-370A .8750 .20 4T-385 Series 4T-385 .8640 .09 4T-382 .7018 .03 .8268 .8 * 4T-385A.

4 8640 .09 4T-382A .6250 .03 .8268 .8 4T-385X .8640 .14 4T-382S .7982 .09 4T-386A .8640 .03 4T-383A .7018 .08 .8268 .6 4T-387 .8640 .09 4T-387A .8640 .14 4T-387AS .8640 .20 4T-387S .8640 .03 .6 4Y-388A .8640 .14 4T-389A .8640 .03 .6 4T-395 Series 4T-390 .8660 .09 4T-393 .03 .8 4T-395 .8660 .14 4T-394A .7411 .05 .8661 4T-395A .8660 .03 4T-394AS .7411 .13 .8661.

5 6 4T-395S .8660 .14 * 4T-396 .8660 .03 .6 4T-399A .8660 .09 4T-399AS .8660 .20 77 Units: INCHES MillimetersSERIES4 TTAPERED ROLLER BEARINGS These maximum fillet radii will be cleared by the cone or cup radii. Cone Bore Cone Max. shaft Cup Cup Max. housing Overall Number Width fillet radius Number Width fillet radius Width d B R D b r T 4T-415 Series 4T-418 .14 4T-412 .13 4T-420 .14 4T-414 .8750 .06 4T-435 Series 4T-438 .14 4T-432A.

6 8750 .03 .8 4T-443 .03 .6 4T-455 Series 4T-455 .03 4T-453 .03 .6 .8 4T-461 .03 4T-453A .8750 .03 .6 .8 4T-462 .09 4T-453X .9687 .13 4T-467 .03 4T-454 .08 .6 4T-469 .14 4T-475 Series 4T-480 .14 4T-472 .9542 .08 4T-482 .14 4T-472A .9230 .13 4T-483 .14 4T-472X .9687 .13 4T-484 .08 4T-495 Series 4T-495 .14 4T-495A .14 4T-492A .8750.

7 13 4T-495AX .25 4T-493 .8750 .13 4T-496 .14 4T-497 .14 4T-498 .14 4T-525 Series 4T-526 .14 4T-522 .13 4T-527 .14 4T-528 .14 4T-529 .03 .6 4T-535 Series 4T-535 .14 4T-532A .13 4T-536 .14 4T-532X .13 4T-537 .14 4T-539 .14 4T-539A .22 4T-543 .14 78 SERIES4 TUnits: INCHES MillimetersTAPERED ROLLER BEARINGS These maximum fillet radii will be cleared by the cone or cup radii.

8 Cone Bore Cone Max. shaft Cup Cup Max. housing Overall Number Width fillet radius Number Width fillet radius Width d B R D b r T 4T-555 Series 4T-555S .14 4T-552 .13 4T-557A .31 4T-552A .13 4T-557S .14 4T-553A .13 4T-559 .14 4T-553X .13 4T-560 .14 4T-565 Series 4T-567 .14 4T-563 .13 4T-575 Series 4T-575 .14 4T-572 .13 4T-575S .27 4T-572X .13 4T-576 .14 4T-577 .14 4T-580.

9 14 4T-581 .14 4T-582 .27 4T-595 Series 4T-593 .14 4T-592 .13 4T-593A .25 4T-592A .13 4T-594 .14 4T-592XS .13 4T-594A .20 4T-595 .14 4T-596 .14 4T-598 .14 4T-598A .25 4T-615 Series 4T-620 .03 4T-612 .13 .6 4T-621 .14 4T-623 .14 4T-635 Series 4T-635 .14 4T-632.

10 13 4T-639 .14 4T-633 .13 4T-643 .14 4T-645 .25 79 Units: INCHES MillimetersSERIES4 TTAPERED ROLLER BEARINGS These maximum fillet radii will be cleared by the cone or cup radii. Cone Bore Cone Max. shaft Cup Cup Max. housing Overall Number Width fillet radius Number Width fillet radius Width d B R D b r T 4T-655 Series 4T-659 .14 4T-652 .13 4T-665 .14 4T-665A .25 4T-662 .14 4T-652 .13 4T-653.