Single row angular contact ball bearings are self-retaining units with solid inner and outer rings and ball and cage assemblies with polyamide, sheet metal or brass cages. The raceways of the inner and outer rings are offset from each other along the bearing axis. The bearings are available in open and sealed designs. Their angular adjustment facility is very limited.

Many sizes of angular contact ball bearings are classified as X-life products. These bearings are indicated in the dimension tables.

Bearings of X-life quality have an improved raceway geometry and optimised surfaces. This gives a significant increase in the fatigue limit load of the bearings. When calculating the expanded adjusted rating life, values up to 50% higher are achieved. In certain applications, this means that a smaller bearing arrangement can be designed.

Single row angular contact ball bearings can support axial forces in one direction and high radial forces. They must be axially adjusted against a second bearing fitted in a mirror image arrangement.

The axial load carrying capacity is dependent on the contact angle; i.e. the larger the angle, the higher the load to which the bearing can be subjected. Due to the contact angle of 40°, these bearings can support high axial loads.

Single row angular contact ball bearings of universal design have the suffix UA, UL or UO and are intended for fitting in pairs in an X, O or tandem arrangement or fitting in groups. These bearings can be fitted in any arrangement required. For tandem arrangements, pay attention to the guidelines in the section link.

The suffix UA indicates small axial internal clearance, the suffix UL indicates slight preload and the suffix UO indicates freedom from clearance in an X or O arrangement.

When ordering bearings, the total quantity of bearings must be stated, not the number of bearing pairs or bearing groups.

Sets without an intermediate ring are available in an O arrangement (DB), X arrangement (DF) or tandem arrangement (DT).

When ordering bearings, the number of sets must be stated, not the number of single bearings.

Bearings with the suffix 2RS have lip seals on both sides. Contact RS seals  are suitable for giving protection against dust, contamination and damp atmospheres.

Bearings with lip seals on both sides are greased with a high quality grease and are lubricated for life.

Open bearings and bearings with seals on one side are not greased. They can be lubricated with grease or oil.

Open angular contact ball bearings can be used at operating temperatures from –30 °C to +150 °C. Bearings with a diameter D ＞ 240 mm are dimensionally stable up to +200 °C.

Angular contact ball bearings with cages made from glass fibre reinforced polyamide are suitable for operating temperatures up to +120 °C, restricted by the cage material.

Sealed bearings are suitable for operating temperatures from –30 °C to +110 °C, restricted by the lubricant and the seal material.

Angular contact ball bearings with solid cages made from glass fibre reinforced polyamide have the suffix TVP or TVH.

Solid brass cages have the suffix MP.

The bearings are also available with universally applicable sheet steel window cages (suffix JP).

Check the chemical resistance of polyamide to synthetic greases and lubricants with EP additives.

Aged oil and additives in the oil can impair the operating life of plastic cages at high temperatures.

The oil change intervals must be observed.

Suffixes for available designs: see table.