Structure & introduction
Solid Collar needle roller bearing
The solid collar needle roller bearing has compact structure small radial size and large load carrying capacity It is suitable for the parts of which the radial overall size is limited It is also wide applied to the situation where the shaft or housing has the swinging motion. In general, the needle roller bearing only withstands the radial load, not the axial load. When the shaft has axial load, it can be used in combination with other bearings. However, it does not limit the axial shift of shaft or housing. The limiting rotational speed of needle roller bearing is lower. In high rotational speed of main machine, the needle roller bearing with cage shall be chosen as far as possible. In compassion with other types of needle roller bearings, under the situation of same radial size, the needle roller bearing has the large load carrying capacity and high rigidity but has high friction torque.
Characteristics & classification
Model RNA NK Needle Roller Bearings Without Inner Ring
The needle roller bearing without inner ring is suitable for the parts of which the radial size is limited Because of no inner ring the surface of shaft journal fitted with it is acted directly as rolling surface. It is requested that the surface hardness be no less than HRC60, surface roughness, no more than 0.63m. This kind of bearing does not limit the axial shift of shaft and housing and has high limiting rotational speed. Model NA, NKI Needle Roller Bearings With Inner Ring
The inner ring has no shoulder in this bearing. For this purpose, the inner ring, outer ring, complete set of needles and cage can be mounted respectively. This bearing does not limit the axial shift of shaft and outer housing. Since the cage separates the needles so as to reduce friction. It can be used for the parts with high rotational speed.
Dimension
Inner Diameter: 19 mm
Outer Diameter: 27 mm
Thickness: 16 mm
Quantity: 1 Item = 5 PCS