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HYDRAULIC HOSES, FITTINGS, ADAPTORS, TUBES, MACHINES AND FLUID POWER COMPONENTS

HOSE ASSEMBLY

ASSEMBLY HOSE PREPARING 1

Remember

Inside SAEJ1273 you can find the following information: “the hose supplied by a specific manufacturer is not generally consistent with fittings supplied by a different one”

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Using IMM products according to standards and information correctness guarantees an high quality level and long-lasting resistance of assembled parts. Refer to our catalogue and our technical documents in order to choose the correct cross references and swaging values to use.

SAE J1273: Components checking

Below you’ll find an excerpt of mentioned regulations about some checks to do: Before assembling phase you have to check each component as:

• Configuration and type
• Cleaning
• Damages on covering
• Dents
• Diameters
• Blockages into the inner hoses
• Other visible faults
• Damages
• Suitable lengths
• Bubbles - bulging
• Burrs

Length of assembly hose

Length of assembly hose is calculated according to the following scheme:

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For cutting consider size “C” on the fittings catalogue. Remember to consider the possible extension of the ferrule in the calculation of the total length. In case assembly hose length is not specified, please take in consideration the following information:

• FOR HOSE LENGTH UP TO 630 MM:
for nominal diameters lower than 25 mm, the tolerance is ( -3mm +7mm )
for nominal diameters between 25 mm and 50 mm, the tolerance is ( -4mm +12mm )
for nominal diameters higher than 50 mm, the tolerance is ( -6mm +25mm )
• FOR HOSE LENGTH BETWEEN 630 MM AND 1.250 MM:
for nominal diameters lower than 25 mm, the tolerance is ( -4mm +12mm )
for nominal diameters between 25 mm and 50 mm, the tolerance is ( -6mm +20mm )
for nominal diameters higher than 50 mm, the tolerance is ( -6mm +25mm )
• FOR HOSE LENGTH BETWEEN 1.250 MM AND 2.500 MM:
for nominal diameters lower than 25 mm, the tolerance is ( -6mm +20mm )
for nominal diameters higher than 25 mm, the tolerance is ( -6mm +25mm )
• FOR HOSE LENGTH BETWEEN 2.500 MM AND 8.000 MM:
regardless of the hose nominal diameter, the tolerance always is ( -0.5% +1.5% )
• FOR HOSE LENGTH HIGHER THAN 8.000 MM:
regardless of the hose nominal diameter, the tolerance always is ( -1% +3% )

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I.M.M. Hydraulics S.p.A. Via Italia, 49-51 66041 Atessa (CH) Italy T+39 (0)872889225 VAT 01427010697 info@imm-hydraulics.it
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