Needle Non Thrust Roller Bearings

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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.

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.

Bearing Number	Bore Dia	Outer DIa	Width	Size
1.969 Inch \| 50 Millimeter x 2.441 Inch \| 62 Millimeter x 0.984 Inch \| 25 Millimeter KOYO NK50/25A Needle Non Thrust Roller Bearings	300 mm	540 mm	140 mm	5 mm
0.984 Inch \| 25 Millimeter x 1.299 Inch \| 33 Millimeter x 0.63 Inch \| 16 Millimeter KOYO NK25/16A Needle Non Thrust Roller Bearings	260 mm	400 mm	104 mm	4 mm
0.63 Inch \| 16 Millimeter x 0.945 Inch \| 24 Millimeter x 0.63 Inch \| 16 Millimeter KOYO NK16/16A Needle Non Thrust Roller Bearings	12 mm	28 mm	7 mm	0.3 mm
0.591 Inch \| 15 Millimeter x 0.748 Inch \| 19 Millimeter x 0.512 Inch \| 13 Millimeter KOYO K15X19X13 PDL225 Needle Non Thrust Roller Bearings	300 mm	500 mm	160 mm	5 mm
2.559 Inch \| 65 Millimeter x 3.071 Inch \| 78 Millimeter x 1.378 Inch \| 35 Millimeter KOYO NK65/35A Needle Non Thrust Roller Bearings	10 in	Kevlar Packing Seal	Split Cylindrical Expansion Type	Four-Bolt Plummer Block
1.024 Inch \| 26 Millimeter x 1.339 Inch \| 34 Millimeter x 0.787 Inch \| 20 Millimeter KOYO NK26/20A Needle Non Thrust Roller Bearings	160 mm	270 mm	86 mm	2.1 mm
1.85 Inch \| 47 Millimeter x 2.244 Inch \| 57 Millimeter x 0.787 Inch \| 20 Millimeter KOYO NK47/20A Needle Non Thrust Roller Bearings	240 mm	440 mm	120 mm	4 mm
1.85 Inch \| 47 Millimeter x 2.244 Inch \| 57 Millimeter x 1.181 Inch \| 30 Millimeter KOYO NK47/30A Needle Non Thrust Roller Bearings	320 mm	480 mm	121 mm	4 mm
0.748 Inch \| 19 Millimeter x 1.063 Inch \| 27 Millimeter x 0.787 Inch \| 20 Millimeter KOYO NK19/20A Needle Non Thrust Roller Bearings	200 mm	420 mm	138 mm	5 mm
1.142 Inch \| 29 Millimeter x 1.496 Inch \| 38 Millimeter x 1.181 Inch \| 30 Millimeter KOYO NK29/30A Needle Non Thrust Roller Bearings	180 mm	320 mm	86 mm	4 mm
1.693 Inch \| 43 Millimeter x 2.087 Inch \| 53 Millimeter x 0.787 Inch \| 20 Millimeter KOYO NK43/20A Needle Non Thrust Roller Bearings	500 mm	920 mm	336 mm	7.5 mm
0.673 Inch \| 17.1 Millimeter x 0.938 Inch \| 23.825 Millimeter x 0.625 Inch \| 15.875 Millimeter KOYO NJ-47 Needle Non Thrust Roller Bearings	28.600 mm	54.0000 mm	9.5 mm	12.7 mm