tapered roller bearings

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
KOYO 78238/78551 tapered roller bearings	Bearings	N/A	0.0	KOYO
NTN CRD-12005 tapered roller bearings	5.512 Inch \| 140 Mil	Shaft Mount	Metric	NTN
30 mm x 55 mm x 17 mm FAG 32006-X tapered roller bearings	NAPL 205 25MM	0 Inch \| 0Millimeter	3/8 Inch	N/A
139,7 mm x 215,9 mm x 51 mm Gamet 200139X/ 200215X tapered roller bearings	0.0	PEER BEARING CO.	8865590026272	Bearings
75 mm x 145 mm x 51 mm NTN 4T-JH415647/JH415610 tapered roller bearings	Ball Bearing	4.875 Inch \| 123.825	Pillow Block	Single Row \| Spheric
FAG 32011-X-N11CA tapered roller bearings	0.0	5.3 Inch \| 134.7 Mil	Eccentric Collar	22
Timken 558/552D+X1S-558 tapered roller bearings	0053893839288	Bearings	B04334	N/A
NTN CRD-2011 tapered roller bearings	Single Row Ball Bear	55MM Bore; 120MM Out	No	No
139,7 mm x 295,275 mm x 87,312 mm NTN T-HH231649/HH231615 tapered roller bearings	N/A	0.0	ASAHI BEARINGS	M06110
50 mm x 80 mm x 20 mm CYSD 32010 tapered roller bearings	Yes	Rubberized	Max Life Cage	Piloted Flange
45 mm x 85 mm x 23 mm ZVL 32209A tapered roller bearings	Ball Bearing	1.575 Inch \| 40 Mill	1 (Single)	0.0
536,575 mm x 820 mm x 146 mm PSL PSL 612-330 tapered roller bearings	0644075173988	3.78 Inch \| 96 Milli	N/A	0.0