NTN DRIVESHAFT ANDERlu, INC.

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.Tapered roller bearings are separable into a cone assembly and a cup. The non-separable cone assembly consists of the inner ring, the rollers, and a cage that retains & evenly spaces the rollers. The cup is simply the outer ring. Internal clearance is established during mounting by the axial position of the cone relative to the cup, although preloaded installations without clearance are common.

Toyana 344A/332 tapered roller bearings
Bearings with Housin
Flanged Pilot Type
380 mm x 560 mm x 106 mm NTN 32076 tapered roller bearings
2400
1120
42.875 mm x 80.000 mm x 22.403 mm NACHI 342S/332 tapered roller bearings
4
22320K
51,592 mm x 88,9 mm x 22,225 mm KOYO 368S/362A tapered roller bearings
2400
1120
170 mm x 360 mm x 72 mm NACHI 30334 tapered roller bearings
Flange Type
Compact Type
85 mm x 180 mm x 41 mm SKF 30317J2 tapered roller bearings
Flange Type
Compact Type
Gamet 180100/180180XG tapered roller bearings
4
22320K
70 mm x 120 mm x 29,007 mm Timken 484/472A tapered roller bearings
Single Metal Shield
104.1
111,125 mm x 200,025 mm x 50 mm Gamet 181111X/181200XP tapered roller bearings
2.00 mm
2800 rpm
107,95 mm x 165,1 mm x 39,5 mm Gamet 141107X/141165XP tapered roller bearings
Tapered Roller
Metric System
40 mm x 80 mm x 22,403 mm NSK 344A/332 tapered roller bearings
6
Deep Groove Ball Bea
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608zz Bearing
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