SAE J49:2020 pdf free
SAE J49:2020 pdf free.Specification Definitions – Hydraulic Backhoes
This standard applies to hydraulic backhoes which have no more than 190 degrees of rotational swing and are mounted on wheeled tractors and crawler tractors.
The purpose of the standard is to establish a uniform method of providing dimensional and operational specifications for hydraulic backhoes.
Dimensional and operational specifications are determined without assembly or equipment changes such as buckets,dippersticks, etc. When specifications are affected by adjustable or extendable members, the position must be specified.Sections 4.2.1 through 6.2 are further defined by Figures 1 through 8. Figures 1 through 8 are not intended to be descriptive of any existing machine and are used only to clarify the meaning of the standard.
The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply.
Copies of these documents are available online at http://webstore.ansi.orgl.
ISO 7451 Earth-moving machinery – Volumetric ratings for hoe-type and grab-type buckets of hydraulic excavators and backhoe loaders
ISO 7457 Earth-moving machinery – Determination of turning dimensions of wheeled machines
ISO 8812 Earth-moving machinery – Backhoe loaders – Definitions and commercial specifications State whether the unit is equipped with a loader, and if so, give manufacturer’s model number of the loader. Specify type and size of loader bucket.
State the track shoe type and width in millimeters (inches) or the tire type size, ply and specified tire inflation pressure;where the front and rear tires are different, both must be specified.
The transverse distance in millimeters (inches) between the centerlines of the tires or sprockets; where front and rear treads are different, both must be specified.
AlI applicable measurements shall be made at bucket teeth, unless otherwise specified. Directional references in the specifications shall be in accordance with SAE J326. When the unit is equipped with an extendable dipperstick, indicate the position of the dipperstick used for this specification.SAE J49 pdf free download.
