INA – Drawn cup needle roller bearings

 

Single or double row units comprising cages and needle rollers.

 

Drawn cup needle roller bearings with open ends and with closed ends are needle roller bearings with a very small radial section height. They comprise thin-walled, drawn cup outer rings and needle rollers and cage assemblies which together form a complete unit.

These bearings allow the design of particularly compact and easy-to-fit bearing arrangements with high radial load carrying capacity. In order to support axial forces, they can also be combined with axial needle roller bearings AXW series.

The majority of the bearings are of a single row design and do not have a lubrication hole. Double row designs have a lubrication hole and the suffix ZW.

For particular applications, drawn cup needle roller bearings with open ends are also available in a full complement design.

Drawn cup needle roller bearings require a hardened and ground bearing raceway on the shaft. If the shaft cannot be used as a raceway, the bearings can be combined with inner rings IR or LR.

If axial locating elements such as shoulders , snap right etc, are not used, the housing bore can be produced easily and particularly economically. As a result, fitting of the bearings is simplified.

Drawn cup needle roller bearings with open ends

Drawn cup needle roller bearings with open ends are supplied with a needle roller and cage assembly or a full complement needle roller set. Bearings with needle roller and cage assemblies allow higher speeds than the full complement designs.

Drawn cup needle roller bearings with closed ends

Some designs of drawn cup needle roller bearings are closed at one end. They are therefore suitable for closing off the shaft ends of bearing arrangements. This gives protection against injury by rotating shafts and protects the bearing against contamination and moisture. Depending on the size, the base is either smooth or lock-beaded (stiffened). Due to the profiled base, small axial guidance forces are possible.

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