Double row angular contact ball bearings for ball screws in machine tools

Details: Released: 12.05.2020; Last updated: 20.03.2023; Hits: 6379

Manufacturers of machine tools place high demands on the built-in Ball Screws. These have to position quickly, efficiently and very precisely. Dr. Tretter has the new Axial for these demands Angular contact ball bearings of the BSBD series from NSK in the portfolio.

The angular contact ball bearings are available in two versions. The angular contact ball bearings of the BSN series for axial loads correspond to double row bearings in O arrangement. they have one one-piece outer ring. The BSF series has one extended outer ring with through holes. This enables the angular contact ball bearings to be mounted directly on the front.

Smallest, light wire race bearing with profiled raceways

The contact angle of the bearings is 60 degrees. The new bearing series can take high axial loads in both directions. It runs precisely with high rigidity. Modern precision machines require these properties. The bearings can be preloaded with a defined force by tightening the shaft nut with the recommended clamping force.

Well-protected angular contact ball bearings even for high loads

The angular contact ball bearings were with a low-friction contact seal Mistake. This has a multi-lip structure that holds back the grease well, protects it from the ingress of dust and is suitable for high speeds. The lip seal runs in a groove on the inner ring. It also keeps torque and heat generation low. Dr. Tretter supplies the angular contact ball bearings ready for installation and lubricated for life. The bearings can be relubricated during operation via a lubrication groove on the outer surface of the outer ring.

There is one for some sizes of angular contact ball bearings difficult execution. This has the same bore diameter, but is wider. In addition, the balls and the outer ring diameter are larger. The designer benefits from higher rigidity and basic load ratings.

Cryogenic cooling reduces wear and tear and tool life

If the loads are higher, Dr. Tretter the axial angular contact ball bearings in a paired design with coordinated single bearings. Both of them are necessary for the correct arrangement of bearings during assembly Warehouse identified by a V mark on the outside diameter.