Cylindrical Roller Bearing Configurations

Cylindrical roller bearings have an advantage in that they can be manufactured in a variety of different configurations making them ideally suited for a number of different applications:

.The configuration at the top of Figure 18 is a two-part bearing with a separable inner ring. It is the lowest priced of all the configurations. The rings are centerless ground for excellent concentricity and wall thickness. The rollers are retained radially by a stamped steel separator and axially by split retaining rings that are fitted in outer ring grooves. The separable inner ring allows shaft axial movement due to accumulated manufacturing tolerances and differential thermal expansion of the shaft relative to the housing. The inner ring of this configuration can be omitted and the rollers run directly on hardened and ground shafts enabling the shafts to be made larger and stronger.

.The second configuration on Figure 18 has a variation of the above design having two ribs on the inner ring making it a non-separable bearing for ease of shipping, handling, and assembly. It should be noted that retaining rings are not designed to support the full thrust load that inner and outer ring ribs are designed to do.

.The third sketch on Figure 18 has a configuration that incorporates a rib on opposite sides of the inner and outer rings which allows the bearing to support one-direction thrust loads.

.The fourth sketch on Figure 18 depicts a bearing with an inner ring side plate and a u-shaped outer ring that allows the bearing to support two-direction thrust loads. The side plate can also be incorporated with the outer ring and a u-shaped inner ring to support two-direction thrust loads. This configuration has a separator consisting of formed bars and side rings riveted together for higher speed and quieter operation.

.The fifth sketch has a bearing with a cylindrical outer ring and a u-shaped inner ring. The outer ring can be eliminated and the rollers run in the housing bore. This configuration also has a high speed separator.

.The sixth sketch has a version with no separator and a full set of rollers for maximum capacity but with some reduction in limiting speed.