tapered roller bearings

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The inner and outer ring raceways are segments of cones and the rollers are tapered so that the conical surfaces of the raceways, and the roller axes, if projected, would all meet at a common point on the main axis of the bearing. This geometry makes the motion of the cones remain coaxial, with no sliding motion between the raceways and the OD of the rollers.

This conical geometry creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patch and no differential scrubbing occurs.

The rollers are stabilized and restrained by a flange on the inner ring, against which their large end slides, which stops the rollers from popping out due to the "pumpkin seed effect" of their conical shape.The larger the half angles of these cones the larger the axial force that the bearing can sustain.

Bearing Number Bore Dia Outer DIa Width Size
40 mm x 85 mm x 21,692 mm FBJ 350A/354A tapered roller bearings 2.875 Inch | 73.025 ABB MOTORS AND MECHA 7.9 Inch | 199.5 Mil N/A
Fersa 32015XF tapered roller bearings 7 ° 500 N/mm² 68 mm 0.25
NACHI 14125A/14274 tapered roller bearings LINK BELT 17.236 M06288 0.0
NTN CRI-2219 tapered roller bearings Yes Female Spherical Plain Bear 1 Inch | 25.4 Millim
44,45 mm x 82,931 mm x 25,4 mm ISB 25580/25523 tapered roller bearings Not Applicable No 0.04 31171512
254 mm x 533,4 mm x 120,65 mm ISO HH953749/10 tapered roller bearings N/A 1.308 Mounted Units & ASAHI BEARINGS
69,85 mm x 112,712 mm x 25,4 mm Timken 29675/29620 tapered roller bearings Roller Bearings B04311 0029176768231 0.0
KOYO 3477/3420 tapered roller bearings ISOSTATIC INDUSTRIES ISOSTATIC B04264 Plain Bearings
69,85 mm x 168,275 mm x 56,363 mm FBJ 835/832 tapered roller bearings N/A 2.449 0.0 SEALMASTER
40 mm x 74 mm x 36 mm NSK ZA-40BWD16CA103** tapered roller bearings ASAHI BEARINGS 31171533 Take Up Take Up Bearing Only
34,976 mm x 69,012 mm x 19,583 mm NTN 4T-14139/14276 tapered roller bearings 0.0 0 M06110 Bearings
85 mm x 150 mm x 36 mm Timken X32217M/Y32217M tapered roller bearings B04311 0.0 ROLLWAY BEARING 0.449