SKF Needle Roller Bearings

Needle roller bearings are roller bearings, which have a high load carrying capacity with a very small section height. They are available with or without an inner ring. In all needle roller bearings, except for full complement needle roller bearings, the needle rollers themselves are guided parallel to the axis by a dimensionally stable cage.

Precision needle rolling elements used in needle roller bearings have multiple uses in a variety of industries including automotive, truck, farm and construction equipment, two-cycle engines, outboard engines and consumer durables. Needle rollers are mainly used as bearing rolling elements to transmit torque and reduce friction. They can also serve as precision shafts or as precision locating pins.

Other uses for needle roller bearings include crank pins, precision shafts and as locating pins. Additional special features (knurls, grooves, etc.) and alternate materials (stainless or carburizing steel) are also available.

Needle roller bearings incorporate cylindrical rollers which are thin and long in relation to their diameter. In spite of their low cross section, the bearings have a high load carrying capacity and are thus suitable for bearing arrangements where radial space is limited.
Commonly used types are:

. Drawn cup needle roller bearings
. Needle roller bearings without inner ring
. Needle roller bearings with inner ring

For applications where an adequate seal is not available or cannot be provided for space reasons, sealed needle roller bearings can be supplied.