Specialty rotary bearings are non-standard, specialized, or proprietary rotary bearing products. These bearings are typically designed for specific applications and may not belong to a conventional bearing type definition. Some specialty rotary bearings combine elements of standard bearings in one housing, such as a needle roller bearing with a roller thrust bearing. Others may have a specialized housing unit or se
Specialty rotary bearings are generally constructed of carburized or case-hardened bearing steel which is characterized by a hardened surface (greater than 0.015 in. thick) and a soft core, however other materials such as plastic or ceramic may be used, depending on the bearing application.
Specialty rotary bearings are designed for many speicalized applications:
Heavy-duty use in vehicle axles and machine shafts
Precision clock parts
Ship line shafts