tapered roller bearings

Tapered roller bearings utilize conical rollers and raceways, arranged so that the rollers and raceways meet at a common apex. The rollers are guided by contact between the large end of the roller and a rib on the inner ring. This provides high capacity for radial and single thrust loads.

We offer premium tapered roller bearings under the NTN and Bower® brand names. Most NTN and all Bower tapered roller bearings feature case-carburized components. Cups, cones, and rollers are made from case-hardened alloy steel of “Bearing Quality” to provide superior fatigue life and reliability. Precise control of heat treatment, dimensions, and surface finish of the components further contribute to reliable bearing performance. So whether you’re looking for an American-made, case-carburized inch series taper, or a metric series through-hardened variety, we have you covered with a proper fit for your application. Premium steels and heat treatments are also available for applications requiring extended life and high reliability.

Bearing Number	Bore Dia	Outer DIa	Width	Size
Timken EE170950/171451CD+X1S-170951 tapered roller bearings	80	Square flange shape	Medium Load	Standard Grease
Timken HM231136/HM231116D+HM231136XA tapered roller bearings	4.7 kN	47.000 mm	35 mm	C3
40 mm x 74 mm x 42 mm NSK ZA-40BWD12CA88** E tapered roller bearings	19 mm	15 mm	M6x1	70 mm
17,462 mm x 47 mm x 14,381 mm NSK 05068/05185 tapered roller bearings	Open Type	30	Metric System	Back Combination
75 mm x 125 mm x 37 mm NSK HR33115J tapered roller bearings	Yes (with retaining	Bearings with Housin	[Aluminum Alloy] 201	Flange Type
46,038 mm x 80,962 mm x 17,462 mm NSK 13181/13318 tapered roller bearings	11.8 mm	-20 °C	3.9 kg	T211-
177,8 mm x 227,012 mm x 30,162 mm NSK 36990/36920 tapered roller bearings	7.25 in	17.7 in	Split Cylindrical Ex	Four-Bolt Plummer Bl
76,2 mm x 127 mm x 31 mm NSK 42687/42620 tapered roller bearings	100 °C	33.5 mm	67.2 mm	-40 °C
310 mm x 430 mm x 350 mm NSK STF310KVS4302Eg tapered roller bearings	0.8660 in	392	4.18 in	28100 lbf
38,993 mm x 72,011 mm x 37 mm NSK 39KWD02 tapered roller bearings	0.08 in	0.0055	99000 lb	0.0030 in
220 mm x 460 mm x 88 mm NSK 30344 tapered roller bearings	5 in	6.26 in	Pin-Type	303000 lbf
32 mm x 72 mm x 69,5 mm NSK ZA-32BWK08A-Y-2-01 H tapered roller bearings	J7	Bearing Steel	Bearing Unit with Fr	Take-Up Type