The type A bearing is a conventional design. It features a circular pocket separator and a 30° contact angle along with approximately 67% of a full complement of balls.

Radialand axial load on bearing

Types of Reali-Slim® bearings Kaydon Reali-Slim® bearings are available in three basic configurations to handle radial loads, axial loads and moment loads: angular contact (type A), radial contact (type C), and four-point contact (type X). By using these three types, the customer has a wider choice of mounting arrangements to meet load, stiffness and accuracy requirements in the most efficient manner.

Radialload vs axial load

Home SKF Brands Locations Certifications Affiliates Jobs Search Login Register Forgot password Terms & conditions Privacy policy Site ownership Cookies General conditions of sales

The chief benefit of the type A bearing is that it provides greater thrust capacity than a type C or type X bearing. Because of its counterbored outer race, type A bearings have unidirectional thrust capacity. Thus, this bearing should be mounted opposed to another bearing to establish and maintain the contact angle, and to support reversing thrust loads.

Standard bearing lines are most often designed to handle either radial or axial load conditions. The unique feature about the Kaydon Reali-Slim® type X four-point contact bearing line is that the gothic arch geometry of the inner and outer races enables a single bearing to carry three types of loading (radial, axial and moment) simultaneously. This makes it the bearing of choice for many applications since a single four-point contact bearing can often replace two bearings, providing a simplified design.

Radialload formula

Note: Kaydon does not recommend the use of two type X bearings on a common shaft, as it could result in objectionable friction torque.

Radial and axial (thrust) loads Bearings support a shaft or housing to permit their free motion about an axis of rotation. Load can be applied to bearings in either of two basic directions. Radial loads act at right angles to the shaft (bearing's axis of rotation). Axial (thrust) acts parallel to the axis of rotation. When these loads are offset from either the bearing axis (distance St) or radial plane (distance Sr), a resulting moment load (M) will be created.

Radialload example

The type C radial contact bearing is a single row radial ball bearing of conventional design. It is a Conrad-type assembly, which means that it is assembled by eccentric displacement of the inner race within the outer race which permits insertion of about half of a full complement of balls.

Although the type C bearing is designed primarily for radial load application, it can be configured to accept some axial (thrust) load in either direction. But, if thrust is a concern, a set of angular contact bearings should be considered for the specific application.

With full confidence and reliability FISCHER USA has expanded our service offerings over the past decade to include spindle repairs on all makes and models. FISCHER USA has a solid record of repairing GMN, IBAG, Kessler, Weiss, Makino spindles; to name a few.

Radialload bearing

Type X bearings may also be furnished with an internal diametral preload for those applications requiring greater stiffness or zero free play. This is accomplished by using balls that are larger than the space provided between the raceways. The balls and raceways, therefore, have some elastic deformation in the absence of an external load.

Log in to access Slewing Bearing 3D models & CAD files. Access Thin Section Bearings at SKF.com  Forgot password?  |  Register