SAE J 1998 : 1998

Abstract

Defines the essential dimensional features of R, B and M rectangular piston ring types, with narrow ring width. Dimensional Tables 8 and 9 allow for use of cast iron and steel. As the modulus of elasticity of steel rings is greater than for cast iron, the fluctuation in the surface pressure will be greater should the free gap be set as the reference for force. Forces are therefore set using the surface pressure as the reference, so as to minimize the effect of the fluctuation. Applicable to rectangular rings for reciprocating internal combustion engines not in excess of 90 mm diameter for cast iron rings and not exceeding 100 mm diameter for steel. Also suitable for use for piston rings of compressors working under similar conditions.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	SAE International
Pages
ISBN