Needle Non Thrust Roller Bearings

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Needle roller bearings have relatively small diameter cylindrical rolling elements whose length is much larger than their diameter. Compared with other types of rolling bearings, needle roller bearings have a small cross-sectional height and significant load-bearing capacity and rigidity relative to their volume. Also, because the inertial forces acting on them is limited, they are an ideal choice for applications with oscillating motion. Needle roller bearings also work well in compact and lightweight machine designs and they serve as a ready replacement for sliding bearings.

A needle roller and cage assembly includes needle rollers and a cage that guides and retains the rollers. ¡These assemblies use both the shaft and housing as raceway surfaces. Consequently, the cross-sectional thickness of the assembly is small, roughly equivalent to the diameter of the needle rollers. ¡Because this bearing type has no inner or outer rings, the installation is much easier. ¡These assemblies are available in both singlerow and double-row configurations. ¡As long as the tolerance limits of the shaft and housing are satisfied, the bearing radial internal clearance can be adjusted.

Bearing Number Bore Dia Outer DIa Width Size
1.5 Inch | 38.1 Millimeter x 1.875 Inch | 47.625 Millimeter x 1.25 Inch | 31.75 Millimeter KOYO WJ-243020 Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0.82
1.75 Inch | 44.45 Millimeter x 2.125 Inch | 53.975 Millimeter x 1 Inch | 25.4 Millimeter KOYO WJ-283416 Needle Non Thrust Roller Bearings Single Row Ball Bearing 0.0 N/A 0
1.125 Inch | 28.575 Millimeter x 1.5 Inch | 38.1 Millimeter x 1 Inch | 25.4 Millimeter KOYO WJ-182416 Needle Non Thrust Roller Bearings Bearings 0.0 N/A 4.6
1.5 Inch | 38.1 Millimeter x 1.875 Inch | 47.625 Millimeter x 1 Inch | 25.4 Millimeter KOYO WJ-243016 Needle Non Thrust Roller Bearings Sleeve Bearings 3.0 N/A 0
1.25 Inch | 31.75 Millimeter x 1.625 Inch | 41.275 Millimeter x 1 Inch | 25.4 Millimeter KOYO WJ-202616 Needle Non Thrust Roller Bearings Flange Block 0.0 N/A 1.11
1.25 Inch | 31.75 Millimeter x 1.625 Inch | 41.275 Millimeter x 1.5 Inch | 38.1 Millimeter KOYO WJ-202624 Needle Non Thrust Roller Bearings Bearings 0.0 N/A 21.38
1.125 Inch | 28.575 Millimeter x 1.5 Inch | 38.1 Millimeter x 1.25 Inch | 31.75 Millimeter KOYO WJ-182420 Needle Non Thrust Roller Bearings Thrust Ball Bearings 0.0 N/A 0.015
1.25 Inch | 31.75 Millimeter x 1.625 Inch | 41.275 Millimeter x 0.75 Inch | 19.05 Millimeter KOYO WJ-202612 Needle Non Thrust Roller Bearings Insert Bearings 0.0 N/A 0.123
1 Inch | 25.4 Millimeter x 1.313 Inch | 33.35 Millimeter x 1.25 Inch | 31.75 Millimeter KOYO WJ-162120 Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0.605
0.375 Inch | 9.525 Millimeter x 0.563 Inch | 14.3 Millimeter x 0.5 Inch | 12.7 Millimeter KOYO J-68 PDL449 Needle Non Thrust Roller Bearings Sleeve Bearings 16.0 N/A 0
0.375 Inch | 9.525 Millimeter x 0.563 Inch | 14.3 Millimeter x 0.5 Inch | 12.7 Millimeter KOYO J-68 PDL125 Needle Non Thrust Roller Bearings Bearings 0.0 N/A 51.6
0.5 Inch | 12.7 Millimeter x 0.688 Inch | 17.475 Millimeter x 0.312 Inch | 7.925 Millimeter KOYO J-85-OH Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0
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