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Angular Contact Ball Bearings
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Angular Contact Ball Bearings |
 Angular
contact ball bearings are non-separable type bearings and
typically used for carrying combined (axial and radial) loads. They can
carry pure axial load and operate in higher speed. That's why many
people refer to them incorrectly as thrust bearings.Physical Characteristics Angular contact ball bearings have raceways in the inner and outer rings that are displaced with respect to each other in the direction of the bearing axis. Following table describes the characteristics of three types of angular contact ball bearings:
Types Of Angular contact ball bearings There are three basic types of angular contact ball bearings:
Single row angular contact ball bearings can carry axial loads acting in one direction only. Under the radial loads the force acting in the axial direction needs to be countered. It is usually adjusted against the second bearing. These bearings have one high and one low shoulder on each ring allowing more number of balls to be incorporated. There are two standard versions of single row angular contact ball bearings used for different purposes.
The design of double row angular contact ball bearings is similar to two single row angular contact ball bearings placed adjacent. The design is non separable type. The basic design does not have filling slots and can accommodate equal axial loads in both directions. The ones with a larger outer diameter have filling slots in one direction and have a pressed steel or machined brass cage. Bearings with E design have high load carrying capacity. They also have filling slots on one side and that allows incorporating large number of balls. They are also available with shields (non-rubbing type) and seals (low friction and rubbing type) on both sides. They are filled with lithium based grease that inhibits rust and can operate from temperatures -30° C to 110° C. Four Point Contact Ball Bearings  Four
point contact ball bearings are single row having raceways that enable
to accommodate axial loads in both directions. They need lesser axial
space and a two part inner ring. This allows large number of balls to be
incorporated and carry larger loads. The bearings are separable type.
They are designed to accommodate axial loads and arranged as thrust
bearings with radial clearance.Angular Contact Ball Bearings Specifications & Standards Standard cage types: In the following table you can find out standard cage types for angular contact ball bearings. For high speed use angular contact ball bearings, molded resin cages and machined cages are widely used.  Dimensions - The dimensions are as per the ISO recommendations Misalignment - They are designed to adjust to limited alignment errors. Any misalignment increases the running noise. Tolerance - They are usually meant for normal tolerance but can be enhanced. Internal Clearance - The internal clearance for single row angular contact ball bearing is obtained after mounting and depends on the second bearing that provides axial location in opposite direction. Click Here to view Axial internal clearance of double row angular contact ball bearings Normal axial internal clearance is taken as standard in double row angular contact ball bearings. Click Here to view Axial internal clearance of four-point contact ball bearings Minimum Load - For satisfactory operation, the bearings must be subjected to the minimum load that is calculated by:  Angular contact ball bearings are ideally suited to applications such as compressors, pumps, fans, windmills, gearboxes and turbines.
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