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
1.181 Inch | 30 Millimeter x 1.85 Inch | 47 Millimeter x 0.709 Inch | 18 Millimeter KOYO NA4906A.2RS Needle Non Thrust Roller Bearings Mounted Units & Inserts 0.0 N/A 4.082
0.984 Inch | 25 Millimeter x 1.496 Inch | 38 Millimeter x 0.787 Inch | 20 Millimeter KOYO NKS25A Needle Non Thrust Roller Bearings Cylindrical Roller Bearing 0.0 N/A 0.576
2.165 Inch | 55 Millimeter x 3.346 Inch | 85 Millimeter x 1.102 Inch | 28 Millimeter KOYO NKJS55A Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0
1.378 Inch | 35 Millimeter x 2.283 Inch | 58 Millimeter x 0.866 Inch | 22 Millimeter KOYO NKJS35A Needle Non Thrust Roller Bearings Sleeve Bearings 4.0 N/A 0
1.969 Inch | 50 Millimeter x 3.15 Inch | 80 Millimeter x 1.102 Inch | 28 Millimeter KOYO NKJS50A Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0
0.984 Inch | 25 Millimeter x 1.85 Inch | 47 Millimeter x 0.866 Inch | 22 Millimeter KOYO NKJS25A Needle Non Thrust Roller Bearings Roller Bearings 0.0 N/A 0
1.181 Inch | 30 Millimeter x 2.047 Inch | 52 Millimeter x 0.866 Inch | 22 Millimeter KOYO NKJS30A Needle Non Thrust Roller Bearings Sleeve Bearings 27.0 N/A 0
0.354 Inch | 9 Millimeter x 0.748 Inch | 19 Millimeter x 0.472 Inch | 12 Millimeter KOYO NKJ9/12A Needle Non Thrust Roller Bearings Bearings 0.0 N/A 18.1
0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 0.787 Inch | 20 Millimeter KOYO NKJS20A Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0
1.969 Inch | 50 Millimeter x 2.677 Inch | 68 Millimeter x 1.378 Inch | 35 Millimeter KOYO NKJ50/35A Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0
3.543 Inch | 90 Millimeter x 4.724 Inch | 120 Millimeter x 1.024 Inch | 26 Millimeter KOYO NKJ90/26A Needle Non Thrust Roller Bearings Bearings 0.0 N/A 0
2.756 Inch | 70 Millimeter x 3.74 Inch | 95 Millimeter x 0.984 Inch | 25 Millimeter KOYO NKJ70/25A Needle Non Thrust Roller Bearings Sleeve Bearings 78.0 N/A 0
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