Wide Inner Ring Bearings

What are Wide Inner Ring Bearings?

Also known as ball bearing units, wide inner ring bearings are specifically designed for installation into the corresponding wide inner ring housings.

They offer great versatility between bearing and housing options, with a range of performance features, suitable for various applications. These include a triple seal design for severe contamination conditions; stainless steel units for corrosive environments; and high durability bearings for demanding applications.

We offer a range for both metric and imperial shaft sizes. And these are available in various combinations, including pedestal housing; flanged housing in 2 bolt and 4 bolt; hanger type units; and also pressed metal housing options.

The wide inner ring ball bearing offers options of various sealing and mounting options, combined with a self-aligning capability.

Wide Inner Ring Bearing Construction

Wide inner ring (WIR) type bearings employ a combination of materials and construction methods that offer a solution of various shapes and shaft locking depending on application requirements.

The bearing outer surfaces are spherical and match the inner surface of the housing. This assembly arrangement means the unit is self-aligning.

The inside construction of these units is similar to standard 62 or 63 bearings series that utilize a duplex seal typically using a combination of synthetic rubber and a metal outer slinger.

This provides superior sealing (see fig 1). There are other custom sealing options that can be incorporated. Please contact your local Statewide Bearings branch to discuss these options.

Inner ring

There are several methods to lock the inner race of the bearing onto a shaft

  1. 2 set screws (see fig 2).
  2. Inner ring has a tapered bore with a matching adapter when clamps are tightened on to the shaft.
  3. Eccentric locking collars where the inner ring is fastened to the shaft by means of eccentric groves provided at the side of the inner ring and on the collar.

Maintenance free bearing unit

Design Features and Advantages

  • Maintenance free types are available
  • Able to be re-lubricated
  • Secure fitting options
  • Self-aligning
  • Higher rated load capacity
  • Light weight
  • Easy mounting
  • Easy bearing only replacement

Click here to view NSK Ball bearing housing units data

For advice on our range of wide inner ring ball bearings, please contact your local Statewide Bearings branch. We’ll be only too happy to assist.