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
NTN 32234UDF tapered roller bearings	7220 ADB	100x180x68	100	180
304,8 mm x 495,3 mm x 134,938 mm Timken EE941206D/941950 tapered roller bearings	NN3024ZTB	120x165x46	120	165
21,986 mm x 45,974 mm x 16,637 mm ISO LM12749/11 tapered roller bearings	6200/HR11TN	30x10x9	30	10
Fersa 32314F tapered roller bearings	F637	7x26x9	7	26
35 mm x 62 mm x 17 mm FAG Z-513286.03 TR1P tapered roller bearings	NJ3209	45x85x30.2	45	85
KOYO 37228 tapered roller bearings	6800LUZ	10x19x5	10,000	19,000
Gamet 70030/70062G tapered roller bearings	6800	10x19x5	10	19
150 mm x 225 mm x 59 mm PSL 33030 A tapered roller bearings	6802-2RU	15x24x5	15	24
180 mm x 380 mm x 75 mm KOYO 30336D tapered roller bearings	6356	280x580x108	280	580
139.700 mm x 215.900 mm x 47.625 mm NACHI 74550/74850 tapered roller bearings	6707LLF	35x44x5	35,000	44,000
100 mm x 215 mm x 47 mm NTN 30320 tapered roller bearings	13BTM1912	13x19x12	13	19