Tapered Roller Bearings - TS (Tapered Single) Imperial On The Timken Company

This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.

Part Number	Series	d - Bore	D - Cup Outer Diameter	B - Cone Width	C - Cup Width	T - Bearing Width	C1 - Dynamic Radial Rating (1 million revolutions)	C0 - Static Radial Rating	CAD
387 - 383	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.8268 in21.001 mm	N/A 0.8268 in21.001 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387W - 383	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.8268 in21.001 mm	N/A 0.8268 in21.001 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387 - 383A	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.7018 in17.826 mm	N/A 0.8269 in21.003 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387AS - 383A	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.7018 in17.826 mm	N/A 0.8269 in21.003 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387W - 383A	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.7018 in17.826 mm	N/A 0.8269 in21.003 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387A - 383A	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.7018 in17.826 mm	N/A 0.8268 in21.001 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387W - 383X	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.8750 in22.225 mm	N/A 1.0001 in25.403 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387 - 383X	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.8750 in22.225 mm	N/A 1.0000 in25.400 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387A - 383X	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.8750 in22.225 mm	N/A 1.0001 in25.403 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
387AS - 383X	N/A 385	N/A 2 1/4 in57.15 mm	N/A 3.937 in100 mm	N/A 0.8640 in21.946 mm	N/A 0.8750 in22.225 mm	N/A 1.0001 in25.403 mm	N/A 24200 lbf108000 N	N/A 24100 lbf107000 N	N/A
3979 - 3919RB	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.1830 in30.048 mm	N/A 0.9687 in24.605 mm	N/A 1.1875 in30.163 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3958 - 3919RB	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.4330 in36.398 mm	N/A 0.9687 in24.605 mm	N/A 1.4375 in36.513 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3979 - 3920	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.1830 in30.048 mm	N/A 0.9375 in23.813 mm	N/A 1.1875 in30.163 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3958 - 3920	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.4330 in36.398 mm	N/A 0.9375 in23.813 mm	N/A 1.4376 in36.515 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3958 - 3925	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.4330 in36.398 mm	N/A 0.9375 in23.813 mm	N/A 1.4376 in36.515 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3979 - 3925	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.1830 in30.048 mm	N/A 0.9375 in23.813 mm	N/A 1.1876 in30.165 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3979 - 3926	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.1830 in30.048 mm	N/A 1.0625 in26.988 mm	N/A 1.3126 in33.340 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3958 - 3926	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 1.4330 in36.398 mm	N/A 1.0625 in26.988 mm	N/A 1.5626 in39.690 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3958 - 3927X	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4.3307 in110 mm	N/A 1.4330 in36.398 mm	N/A 0.9375 in23.813 mm	N/A 1.4376 in36.515 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
3979 - 3927X	N/A 3900	N/A 2 1/4 in57.15 mm	N/A 4.3307 in110 mm	N/A 1.1830 in30.048 mm	N/A 0.9375 in23.813 mm	N/A 1.1876 in30.165 mm	N/A 31200 lbf139000 N	N/A 43000 lbf191000 N	N/A
390 - 393	N/A 395	N/A 2 1/4 in57.15 mm	N/A 4.3307 in110 mm	N/A 0.8660 in21.996 mm	N/A 1.063 in27 mm	N/A 1.0630 in27.000 mm	N/A 22200 lbf98900 N	N/A 28100 lbf125000 N	N/A
390 - 393A	N/A 395	N/A 2 1/4 in57.15 mm	N/A 4-7/16 in112.713 mm	N/A 0.8660 in21.996 mm	N/A 0.6250 in15.875 mm	N/A 0.8751 in22.228 mm	N/A 22200 lbf98900 N	N/A 28100 lbf125000 N	N/A
390 - 393AS	N/A 395	N/A 2 1/4 in57.15 mm	N/A 4.3750 in111.125 mm	N/A 0.8660 in21.996 mm	N/A 0.7411 in18.824 mm	N/A 0.8661 in21.999 mm	N/A 22200 lbf98900 N	N/A 28100 lbf125000 N	N/A
390 - 393C	N/A 395	N/A 2 1/4 in57.15 mm	N/A 4.4680 in113.487 mm	N/A 0.8660 in21.996 mm	N/A 0.8060 in20.472 mm	N/A 0.9310 in23.647 mm	N/A 22200 lbf98900 N	N/A 28100 lbf125000 N	N/A
390 - 393WE	N/A 395	N/A 2 1/4 in57.15 mm	N/A 4.5900 in116.586 mm	N/A 0.8660 in21.996 mm	N/A 1.1859 in30.122 mm	N/A 1.3109 in33.297 mm	N/A 22200 lbf98900 N	N/A 28100 lbf125000 N	N/A

Part Number

Series

d - Bore

D - Cup Outer Diameter

B - Cone Width

C - Cup Width

T - Bearing Width

C1 - Dynamic Radial Rating (1 million revolutions)

C0 - Static Radial Rating

CAD

387 - 383

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.8268 in21.001 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387W - 383

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.8268 in21.001 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387 - 383A

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.7018 in17.826 mm

N/A 0.8269 in21.003 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387AS - 383A

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.7018 in17.826 mm

N/A 0.8269 in21.003 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387W - 383A

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.7018 in17.826 mm

N/A 0.8269 in21.003 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387A - 383A

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.7018 in17.826 mm

N/A 0.8268 in21.001 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387W - 383X

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.8750 in22.225 mm

N/A 1.0001 in25.403 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387 - 383X

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.8750 in22.225 mm

N/A 1.0000 in25.400 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387A - 383X

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.8750 in22.225 mm

N/A 1.0001 in25.403 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

387AS - 383X

N/A 385

N/A 2 1/4 in57.15 mm

N/A 3.937 in100 mm

N/A 0.8640 in21.946 mm

N/A 0.8750 in22.225 mm

N/A 1.0001 in25.403 mm

N/A 24200 lbf108000 N

N/A 24100 lbf107000 N

N/A

3979 - 3919RB

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.1830 in30.048 mm

N/A 0.9687 in24.605 mm

N/A 1.1875 in30.163 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3958 - 3919RB

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.4330 in36.398 mm

N/A 0.9687 in24.605 mm

N/A 1.4375 in36.513 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3979 - 3920

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.1830 in30.048 mm

N/A 0.9375 in23.813 mm

N/A 1.1875 in30.163 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3958 - 3920

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.4330 in36.398 mm

N/A 0.9375 in23.813 mm

N/A 1.4376 in36.515 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3958 - 3925

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.4330 in36.398 mm

N/A 0.9375 in23.813 mm

N/A 1.4376 in36.515 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3979 - 3925

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.1830 in30.048 mm

N/A 0.9375 in23.813 mm

N/A 1.1876 in30.165 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3979 - 3926

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.1830 in30.048 mm

N/A 1.0625 in26.988 mm

N/A 1.3126 in33.340 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3958 - 3926

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 1.4330 in36.398 mm

N/A 1.0625 in26.988 mm

N/A 1.5626 in39.690 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3958 - 3927X

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4.3307 in110 mm

N/A 1.4330 in36.398 mm

N/A 0.9375 in23.813 mm

N/A 1.4376 in36.515 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

3979 - 3927X

N/A 3900

N/A 2 1/4 in57.15 mm

N/A 4.3307 in110 mm

N/A 1.1830 in30.048 mm

N/A 0.9375 in23.813 mm

N/A 1.1876 in30.165 mm

N/A 31200 lbf139000 N

N/A 43000 lbf191000 N

N/A

390 - 393

N/A 395

N/A 2 1/4 in57.15 mm

N/A 4.3307 in110 mm

N/A 0.8660 in21.996 mm

N/A 1.063 in27 mm

N/A 1.0630 in27.000 mm

N/A 22200 lbf98900 N

N/A 28100 lbf125000 N

N/A

390 - 393A

N/A 395

N/A 2 1/4 in57.15 mm

N/A 4-7/16 in112.713 mm

N/A 0.8660 in21.996 mm

N/A 0.6250 in15.875 mm

N/A 0.8751 in22.228 mm

N/A 22200 lbf98900 N

N/A 28100 lbf125000 N

N/A

390 - 393AS

N/A 395

N/A 2 1/4 in57.15 mm

N/A 4.3750 in111.125 mm

N/A 0.8660 in21.996 mm

N/A 0.7411 in18.824 mm

N/A 0.8661 in21.999 mm

N/A 22200 lbf98900 N

N/A 28100 lbf125000 N

N/A

390 - 393C

N/A 395

N/A 2 1/4 in57.15 mm

N/A 4.4680 in113.487 mm

N/A 0.8660 in21.996 mm

N/A 0.8060 in20.472 mm

N/A 0.9310 in23.647 mm

N/A 22200 lbf98900 N

N/A 28100 lbf125000 N

N/A

390 - 393WE

N/A 395

N/A 2 1/4 in57.15 mm

N/A 4.5900 in116.586 mm

N/A 0.8660 in21.996 mm

N/A 1.1859 in30.122 mm

N/A 1.3109 in33.297 mm

N/A 22200 lbf98900 N

N/A 28100 lbf125000 N

N/A