Cookies on the SKF website

We use cookies to ensure that we give you the best experience on our websites and web applications. By continuing without changing your browser settings, we assume you give your consent to receive cookies. However, you can change your browser cookie setting at any time.

Frictional moment

All SKF angular contact thrust ball bearings for screw drives are designed for low friction operation. The frictional moment depends on the preload, rotational speed, seals and quantity of lubricant in the bearing set. The starting torque is typically double the frictional moment.

Single direction bearings

Guideline values for the frictional moment of single direction bearings are listed in the product table and apply to unmounted bearing sets with two bearings arranged back-to-back or face-to-face that will operate at low speeds.

Bearing sets consisting of three or four bearings have a higher frictional moment than sets with two bearings. The frictional moment for these bearing sets is obtained by multiplying the values in the product table by a factor provided in table 1.

Double direction bearings

Guideline values for the frictional moment of double direction bearings are listed in the product table and apply to unmounted bearings that will operate at low speeds.

Cartridge units

Guideline values for the frictional moment of cartridge units are listed in the product table and apply to unmounted bearings that will operate at low speeds.
SKF logo