Wide Inner Ring Bearing Housings

This collection gathers wide-inner-ring bearing and housing products used where a robust mounted bearing arrangement is required. The current range includes UBC items across metric and imperial bore references, including UC, UCX, UK and SER style designations, plus variants identified with triple-lip seals, extended inner rings, food-grade grease or special lock arrangements.

How to identify the right replacement

Use the full existing designation wherever possible. A housing with a similar bore can still differ in outside diameter, insert width, locking method, seal arrangement, mounting style or lubrication provision. Record the shaft diameter, housing shape, base or flange mounting dimensions, bearing series and whether your reference is metric or imperial. This is particularly important when replacing a mounted unit on agricultural equipment, conveyors or workshop machinery.

Wide inner ring designs and lock methods

A wide inner ring gives additional shaft support near the locking point, but does not make every assembly interchangeable. The live product range includes set-screw and other locking arrangements, as well as references with standard, shielded or triple-lip sealing. Select the same locking method and sealing configuration used by the equipment maker unless you have verified a suitable engineering alternative. For more conventional mounted arrangements, also browse mounted bearing units.

Choose for the operating environment

• Dust and moisture: review the seal type and relubrication provisions.
• Food or temperature-sensitive work: verify grease and seal suitability on the individual product listing.
• Metric versus imperial shafts: do not substitute a nominally close size; match the published bore exactly.
• Housing mount: match the original base, flange or take-up layout and bolt centres.

Brands and related parts

UBC is represented extensively in the current product range, with selected references associated with Nachi and Asahi naming in product titles. Brand and series codes matter: always compare the complete designation, not just the first digits. If you need a separate bearing rather than a mounted assembly, see deep groove ball bearings, spherical roller bearings and bearing housings and complete units.

Frequently asked questions

What does “wide inner ring” mean?

It describes the bearing inner ring geometry. It can provide more shaft support around the locking area, but the rest of the unit—bore, lock type, housing form and seal arrangement—must still match the application.

Can I replace a metric unit with the nearest imperial size?

No. Metric and imperial bores must be matched exactly. A near-size substitution can damage the shaft, compromise locking and shorten bearing life.

Are triple-lip versions right for every machine?

No. They are a particular sealing configuration. Check the original specification and actual contamination, speed and lubrication conditions before choosing a sealing variant.

Industrial Shed can help match a mounted bearing or housing when you provide the existing marking, shaft size, housing style and a photo of the unit. We dispatch Australia-wide from Somerville, Victoria.