Extended product range Higher speeds Higher load capacity

Extended bearing service life Increased maintenance intervals Reduced energy consumptions (some ranges) & lower running temperature

Designed to meet expected future requirements by customers in demanding applications

SKF-SNFA super-precision angular contact thrust ball bearings for screw drives
Single direction angular contact thrust ball bearings
Double direction angular contact thrust ball bearings


SKF-SNFA super-precision angular contact thrust ball bearings for screw drives

Machine tools require screw drives that can position a work piece or machine component quickly, efficiently and precisely. To meet these requirements screw drives are usually supported at both ends by super-precision bearings that can provide a high degree of stiffness.  The bearings may also have to accommodate high acceleration and high speed.  SKF and SNFA joined their super-precision bearing expertise to develop bearings which better meet the requirements set by screw drive applications.

Key benefits include –

High axial stiffness
High axial load carrying capacity
Very high running accuracy
Low frictional moment
Ability to accommodate high speeds and accelerations

SKF – SNFA angular contact thrust ball bearings for screw drives are especially suitable for screw drive applications but are also beneficial in other applications where safe and axial support is required, together with extremely precise axial guidance of the shaft. 

Single direction angular contact thrust ball bearings

Single direction bearings provide all the features necessary for high-performance screw drive supports, but are not limited to these applications. 

1. Superior axial stiffness
2. Low frictional movement
3. Designed to accommodate high speeds and rapid accelerations
4. Excellent running accuracy according to ISO tolerance class 2 (ABEC 9)
5. Dimensional accuracy according to ISO tolerance class 4 (ABEC 7)
6. High axial load carrying capacity
7. Universally matchable in sets of up to four bearings
8. Unique heat treatment for constant preload over the entire service life of the bearing

The bearings are available open or with low-friction seals.

Double direction angular contact thrust ball bearings

SKF-SNFA double direction angular contact thrust ball bearings have been developed for machine tool applications where space is tight and easy mounting is required.  They accommodate axial loads in both directions.  Preload is applied by lamping the inner ring halves with a precision lock nut.  These bearings are sealed and greased as standard.  Bearings in the BEAM series can be bold mounted to an associated component. 

Other features include

1. Holes for relubrication via the outer ring
2. Contact seals or non-contact shields
3. Manufactured according to ISO tolerance class 4 (ABEC7)

For more information on any of the above contact us today