Ball bearings

Ball bearings are the most common type of rolling bearing that uses balls as the rolling element. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Ball bearings are of simple design, durable in operation and easy to maintain. They are available in single and double row designs and in open and sealed variants. Due to their low frictional torque, they are suitable for high speeds.


Deep groove ball bearings

The most typical type of bearing, these are used in a wide range of fields. They include grease-enclosed sealed , rubber shield and open type bearings for ease of use.

Other types include bearings with a locating snap-ring to facilitate positioning when mounting the outer ring. These bearings can take radial & axial load and can run at high speed. Angular misalignment capability of these bearings are very limited, hence while mounting bearing positioned must be perfectly aligned in housing and shaft.


Angular contact ball bearings

In these ball bearings, the direct line that connects the inner ring, balls, and outer ring has a given angle in the radial direction (the contact angle).This angle is generally designed with three kinds of contact angle.These bearings can bear axial loads, but because of the contact angle cannot be used singly and must be used in pairs or combinations. BOW angular contact ball bearings are available in single row, double row, and four-point contact configurations .

Like deep groove ball bearings, the rolling resistance in angular contact ball bearings is also very low making them highly suitable for high speed and low starting torque applications. Super finished raceways and high grade balls make them quiet in operation and low in vibration. They are generally used in pairs or in combinations combining two or more angular ball bearings in back-to-back arrangement, face-to-face arrangement, or tandem arrangement.


Self-aligning ball bearings

In a self-aligning bearing, outer ring has a single spherical raceway with its center of curvature in line with the bearing axis and the inner ring has two raceways. The bearings support radial and limited axial loading. This allows the axis of the inner ring, balls and cage to deflect around the bearing center to correct misalignment caused between housing and shaft . In case of misalignment, the ball, cage and inner ring can swivel with respect to outer race. However, as the capacity to bear axial loads is not so great, the bearings are not suited to locations with large axial loads. The bearings are available with straight bore and tapered bore.

The bearings are often used in applications such as drive shafts, as mounting and un-mounting are easy if an adapter is used for bearings with tapered bore calibers.


Thrust ball bearings

These bearings have balls enclosed in a cage between the shaft raceway washer that corresponds to the inner ring, and the housing raceway washer that corresponds to the outer ring. They are designed to carry axial loads with no radial load carrying capacity. These bearings have raceways on the face the washers and are separable.

BOW thrust ball bearings are available in single direction, double direction, and full complement configurations.