Industrial Jack Hose Specification IJ100
In 1979, the Industrial Jacks Product Section of the Material Handling Institute (now known as MHI) published the document, Specifications, Tests and Procedures for Hydraulic Hose and Hose Assemblies Used with Jacking Systems and designated the document as Standard IJ100. The Industrial Jacks Product Section has dissolved, and MHI no longer supports the publication or revision of this document; however, manufacturers of hydraulic hose still refer to this standard or IJ100 for performance claims associated with their products.
MHI receives occasional inquiries regarding the document or its content. The language in IJ100 is presented below. MHI provides the document text for informational purposes only, and makes no claims for warranty, accuracy, or performance of the test method or products tested using the test method.
Specifications, Tests and Procedures for Hydraulic Hose and Hose Assemblies Used with Jacking Systems
These specifications apply to flexible fluid carrying members of a hydraulic jacking system with permanent or reuseable fittings attached directly to the flexible fluid carrying members.
To provide guidelines for the selection, application and use of flexible fluid carrying members for use with jacking systems.
- Hydraulic hose is to conform to the specifications in the current issue of SAE Standard J517 for SAE 100R Series hydraulic hose, except for the impulse test which is modified herein.
- All tests and procedures are those specified in the current issue of SAE Standard J343 for SAE 100R Series hydraulic hose, except for the impulse test which is modified herein.
- Impulse test: In place of the specifications, tests and procedures of SAE J517 and SAE J343, the following procedures are to be used:
a. Impulse testing is to be conducted on ten unaged hose assemblies.
b. The test assemblies are to be impulse on suitable equipment with the hose in a straight position or bent through an arc of 90° or 180° to the minimum bend radius. Two or more assemblies may be impulsed simultaneously using a manifold.
c. The test assembly free length of hose measured between couplings are to be computed using the following:
90° Bend Free Length = π/2(Min. Bend Radius) + 2(Hose OD)
180° Bend Free Length = π(Min. Bend Radius) + 2(Hose OD)
Straight Free Length = 14 – 18 inch
d. The test fluid specified in the current issue of SAE Standard J517 is to be used and circulated through the assemblies at a temperature of 120° + 10°F at a rate which will maintain uniform bore temperature. Cooling or heating of the test chamber is not permitted. Data collected at higher temperatures is acceptable. Original fluid chemical properties are to be maintained by changing the test fluid as required.
e. The hose assemblies are to be tested by impulsing between nominal pressures of 0 and 50% of the minimum burst pressure specified in the current issue of SAE Standard J517. The pressure impulse rate is to be uniform between 30 and 100 CPM.
f. The impulse curve should conform as closely as possible to the curve in the current issue of SAE Standard J343, and, unless failure occurs first, the impulse test is to continue for 40,000 cycles.
g. Hose assemblies should be acceptable for use on hydraulic jacking systems at a maximum operating pressure of 50% of the minimum burst pressure specified in the current issue of SAE Standard J517 if the average impulse life of the ten hose test assemblies is 30,000 cycles minimum. To compute the average life of a hose assembly test lot, no data in excess of 40,000 cycles is acceptable. Failure of a test assembly below 20,000 cycles constitutes a failure of the test. Leakage, burst or coupling blow-off is evidence of failure.
These specifications, tests and procedures for hydraulic hose and hose assemblies used with jacking systems were developed by a committee comprised of members of the Industrial Jacks Product Section of the Material Handling Institute, Inc., and organization of leading industrial jack manufacturers in the United States and are intended and recommended only as a guideline for technical procedures. In developing the guidelines, no investigation was made and no consideration was given to patens which may apply to the subject matter to protect against liability for infringement. Also, this is intended to provide guidelines for general applicability and is not intended for specific applications. Any use must be considered voluntary. Accordingly, neither the Industrial Jacks Product Section nor the Material Handling Institute, Inc. can assume responsibility for liability arising from the use of the specifications, tests and procedures for hydraulic hose and hose assemblies used with jacking systems on the information contained therein with respect to specific applications.