TYPE X: 4-Pt CONTACT BALL BEARING

Type X bearings are similar to a deep groove radial contact bearing with the added feature of a “Gothic Arch” ball groove design. The “Gothic Arch” geometry allows for 4-points of contact between the inner and outer race and therefore enables the bearing to resist a combination of radial, thrust and moment loading all within a single bearing.

Type X bearings are very versatile and when properly applied can greatly reduce the number of bearings, envelope, mounting concerns and cost of an assembly.

Type X bearings are subject to higher friction due to the 4-point contact and must be properly applied. They are not well suited for applications requiring both high stiffness and low, consistent torque and are not designed for use with two Type X bearings on a common shaft. Type X bearings are offered with standard radial clearances; however, they can easily be preloaded with oversized balls. Type X bearings are sensitive to the amount of preload that can be induced without adversely affecting the friction. Factors to consider are: factory set preload, interference fits between rings and mating hardware, mounting flatness, clamp ring design and applied loading.

Type X bearings are offered with a 50% ball compliment and in open, single sealed, double sealed or shielded configurations. Standard bearings are offered with either a nylon or brass snap over separator.