Because of their versatility and cost-effectiveness, ball bearing units are used in many industrial applications.
Ball bearing units consist of an insert bearing mounted in a housing. An insert bearing is a deep groove ball bearing with a sphered (convex) outside surface and an extended inner ring that includes a mechanism to lock the unit onto the shaft. The housings have a correspondingly sphered but concave bore.
The SKF assortment offers a wide variety of units with different housing shapes, bearings, seals and locking methods. It includes units to ISO standards, North American standards, and Japanese Industrial Standards (JIS). Ball bearing units can accommodate moderate initial misalignment, but normally do not permit axial displacement.

Standard unit housing designs include cast iron, composites, pressed steel and stainless steel materials.

Standard unit housing designs include cast iron, composites, pressed steel and stainless steel materials.
Insert bearings are available as separate products. You can find detailed information under rolling bearings.
Standard end cover designs include polypropylene (PP) and thermoplastic polyurethane (TPU) materials.
NBR rubber seating rings “cushion” insert bearings in pressed steel pillow block housings.
Insert bearings in the CYS … FM series are supplied with the seating ring already fitted.
High availability of machinery is crucial to meet productivity requirements. The service life of SKF Agri Hubs can be multiple times longer than a traditional bearing.
Composite and stainless steel housings – a range of designs and variants to best suit your application and environment.
Solutions and designs to meet the specific requirements of applications in HVACR (Heating, Ventilation, Air Conditioning and Refrigeration).
Units with composite housings are cost-effective, lightweight and dimensionally interchangeable with cast iron units.