scope:

1. Scope

1.1 This specification covers iron-base sintered metal powder, oil-impregnated bearings. There are two grades, depending on the level of combined carbon (see Table 1):

1.1.1 Grade 1, Iron Graphite--low combined carbon, and

1.1.2 Grade 2, Iron Graphite--high combined carbon.

1.2 The values stated in inch-pound units are the standard. The metric equivalents of inch-pound units may be approximate.

NOTE 1--Definitions of powder metallurgy terms can be found in Definitions B 243. Additional useful information is available in the Related Material section of Vol 02.05 of the Annual Book of ASTM Standards.

NOTE 2--Information on design, permissible loads, dimensional tolerances, and recommended press fits and running clearances are provided in Appendix X1.