SAE J220
SAE J220 1991-MAR-01 Crane Boomstop
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This SAE Recommended Practice applies to the boomstop for the main boom of all mobile construction type cranes having rope supported booms, equipped for hook work, clamshell, magnet, grapple, or concrete bucket attachments.
Purpose—The purpose of the document is to establish performance standards for crane boomstops.