Needle Non Thrust Roller Bearings
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.
![2.165 Inch | 55 Millimeter x 2.835 Inch | 72 Millimeter x 0.984 Inch | 25 Millimeter KOYO NKJ55/25A Needle Non Thrust Roller Bearings](https://m.riadzina-marrakech.com/uploaded_images/d61778-2-165-inch-55-millimeter-x-2-835-inch-72-millimeter-x-0-984-inch-25-millimeter-koyo-nkj55-25a-needle-non-thrust-roller-bearings.jpg)
![2.362 Inch | 60 Millimeter x 3.228 Inch | 82 Millimeter x 1.378 Inch | 35 Millimeter KOYO NKJ60/35A Needle Non Thrust Roller Bearings](https://m.riadzina-marrakech.com/uploaded_images/d61780-2-362-inch-60-millimeter-x-3-228-inch-82-millimeter-x-1-378-inch-35-millimeter-koyo-nkj60-35a-needle-non-thrust-roller-bearings.jpg)
![1.654 Inch | 42 Millimeter x 2.244 Inch | 57 Millimeter x 1.181 Inch | 30 Millimeter KOYO NKJ42/30A Needle Non Thrust Roller Bearings](https://m.riadzina-marrakech.com/uploaded_images/d61782-1-654-inch-42-millimeter-x-2-244-inch-57-millimeter-x-1-181-inch-30-millimeter-koyo-nkj42-30a-needle-non-thrust-roller-bearings.jpg)