The needle bearing is used in many mechanisms that are involved in construction, agriculture, the automotive industry and other industries. Products can be used in various conditions. Needle bearings consist of a polished outer ring having a recess, a set of rollers guided and held by a cage.
The outer thick ring carries the greatest load capacity and is resistant to shock loads. A needle bearing with a high-strength cage, guiding and holding rollers, provides the required speed and retains lubrication.
We use products made both with a polished outer ring, which is performed by machining, and without it. These mechanisms have found application in pulleys, gear pumps, two-stroke engines and automobile transmissions.
The needle bearing may have guide rollers, which are characterized by the presence of an outer thick-walled ring that moves directly along the guide. Such rings can withstand heavy loads with minimal bending and deformation. This needle roller bearing contains a complete set of rollers; it is delivered in two designs: with a built-in pin used for cantilever mounting, and with an inner ring that allows mounting by bracket type.
To facilitate installation in the head of the trunnion, a socket for a hex key or a hole for a screwdriver is made. Sealed design with internal thrust washers, allows to increase the service life of the product. The main areas of application of these devices are sorting units and lifting mechanisms.
A roller needle bearing having a stamped outer ring perfectly perceives radial loads and reduces friction between rotating elements. The small cross-section of these products makes it possible to withstand significant loads with minimal dimensions. The mechanism is simply mounted by pressing into the case. Needle roller bearings with closed end are also manufactured.
The scope of the described devices is very wide. They are used in transmissions, engines, transfer cases, valve mechanisms, steering systems and brakes.
With their help,
bridge supports, boat outboard motors, copy machines, power tools, fax devices, various household appliances function.
Sealed bearings and closed end options are also available. These devices are used in mechanisms that operate at high speed.
Products with a thick-walled external stamped ring are used in systems where the shaft is operated at a large angle, for example, in hydraulic pumps and drive axles. Mechanisms with a thin-walled ring create a radial support with a small cross-sectional area.
Such devices have restrictions on weight and size. They are used in gearboxes.