Angular contact thrust ball bearings for screw drives
Machine tools require screw drives that can position a workpiece 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.
The table provides an overview of the new assortment of SKF-SNFA super-precision angular contact thrust ball bearings.
SKF-SNFA bearings for screw drives are single or double direction angular contact thrust ball bearings that are available in numerous designs and sizes. In addition to the single direction angular contact thrust ball bearings that were originally designed for screw drives, the SKF-SNFA assortment also includes double direction bearings that can be inserted in a housing bore or bolted to a machine wall. They are also available as cartridge units with a flanged housing that is ready for installation.
The characteristic properties of these angular contact thrust ball bearings 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 radial and axial support is required, together with extremely precise axial guidance of the shaft.
SKF angular contact thrust ball bearings are commonly used in following industries: