This specification covers all metal plain spherical bearings which are self-aligning for use between 65 °F to 250 °F. This specification covers bearings with alloy steel races, aluminum bronze races, and an entierly CRES bearing (ball and race). All units are inches, unless otherwise stated.

Purpose

This document defines the procurment, performance, testing, and procurement activity for the bearings defined in AS21154 and AS21155.

Classification:

Bearings shall be of the following types, as specified:

Type 1 – Grooved outer race (AS21154)

Type 2 – Chamfered outer race (AS21155)