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Founded in 1946, National Engineering Industries Ltd (NEI) is India’s leading bearings manufacturer and exporter, renowned for excellence in quality and delivery.
These are a specific type of needle bearings. Needle bearings have a small radial section height and smaller mass which allows for a compact design. Needle bearings are essentially used for operations that apply low inertia force.
Shell type needle roller bearings comprises an outer shell ring made from special thin steel, needle rollers and a cage. A hardened and ground inner ring/ shaft is used as the raceway. It needs no axial clamping. It is easy to install and has a press fit housing mechanism. This makes the bearings applicable wherever shell face abutment with the housing is not possible. The outer ring of the shell bearing is so thin that it gets deformed and takes the shape of the housing in which it is press fitted. Hence the dimensional accuracy of both shell bearing as well as housing is important for bearing performance.
Shell type needle roller bearings have a customised and compact design. The main features are:
The advantages and applications of these types of bearings vary according to the design of the bearing. There are primarily two types: open and closed. Open variant has a wide range of applications, whereas, closed variant is suitable where perfect closing of the shaft end is required.
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