SAE J2754:2019 pdf free

SAE J2754:2019 pdf free.Volumetric Rating of Excavator Mounted, Bucket Linkage Operated Grapples
This standard specifies a procedure for approximating the volume of materials contained in the grapple of bucket linkage operated grapples mounted to excavators. The volume ratings are based on the inside dimensions of the grapple and representative volumes extending beyond the grapple.
The method employs the technique of dividing the complex shape of the material in the grapple into simple geometric forms to allow volume calculations of different grapple configurations.
The rating method is intended to provide a consistent means of comparing grapple capacities. It is not intended to define actual capacities that might be observed in any specific application.
Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org.
ISO 7451 Earth moving machinery – Volumetric ratings for hydraulic excavator buckets and backhoe loader buckets
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ISO 9248 Earth-moving machinery – Units for dimensions， performance and capacities, and their measurement accuracies
The effect on volumes of local discontinuities such as tine teeth, tooth adapters, wear components and gussets shall be ignored.
Plates that are attached to the inner and outer sheets of a grapple expressly as a sacrificial component to accommodate wear and therefore protect the grapple structure.
The position of the grapple jaws when the host machine’s bucket cylinder is fully retracted, or retracted as much as the grapple allows.
The position of the grapple jaws when the host machine’s bucket cylinder is fully extended, or extended as much as the grapple allows.
The area defined as the distance between the tine tips with the grapple jaws in the grab position and the average of the widths of the lower and upper jaws.
The thickness of the grapple when closed, measured from the outermost of upper jaw inner sheet to the outermost of the lower jaw inner sheet.SAE J2754 pdf free download.