SAE J999
Crane Boom Hoist Disengaging Device
Month of publication: 1998-07-01
Date reaffirmed: July 1998
Developed by committee: Cranes And Lifting Devices Committee
Annotation and contents
Source of this annotation and contents: SAE.
This SAE Standard applies to cranes which are equipped to adjust the boom angle by hoisting and lowering means through rope reeving.
The purpose of this standard is to define the function and to stipulate the requirements of an automatic device to prevent raising a variable angle boom above its highest specified angle.
