Ball Bearing units
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 ALF 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.

Product types
Features and benefits
- Ready to mount
- Lubricated and sealed bearings
- Quick locking on the shaft
- Large variety in housing shapes, housing materials, and locking methods
- Concentric locking options for high speeds and low vibration
In focus
ALF UC range
Ball bearing units that comply with Japanese Industrial Standards (JIS), available for normal, medium, and heavy-duty applications.

From food grade to food safe
We are now raising the bar to support pro-active food safety by providing food-safe bearing units that are completely sealed (Blue range), lubricated for life and designed for increased bearing performance, even in the harshest processing and cleaning environments.

ALF ball bearing units with composite housings
ALF ball bearing units with composite housings are part of ALF’s extensive line of cost-effective mounted products. These lightweight, ready-to-mount units are particularly well-suited for applications with relatively high speeds, moderate loads and where reliability and minimal maintenance are key factors.

ALF ball bearing units for agriculture applications
Discover what you can achieve with ALF insert bearings – developed specifically for agricultural applications.




