1. Definition of hose assembly, because it consists of hose body, hose fittings, ferrules, spring guard etc, normally assembly is by crimping ferrules or screwed socket to bite hose into tail hose fitting end, with left and right end connection to hose, it is a connection to hose adapters. But there are many kinds of hose assembly is depended on customer usage purpose such as: hydraulic hose assembly, Crimped hose assemblies, thermoplastic hose assemblies, Centre lubrication system hose assembly, Push-on hose assembly, Reusable hose assembly etc.
2. How to make hydraulic hose assembly as picture showing:
3. Fittings Left and Fitting Right is selected by ISO standards as below:
ISO_12151-5-2007: Hose fittings with ISO 8434-2 37°flared ends
ISO_12151-1-2010: Hose fittings with ISO 8434-3 O-ring face seal ends
ISO_12151_2:Hose fittings with ISO 8434-1&ISO 8434-4 24°cone connector ends with O-rings
ISO_12151_3-2010: Hose fittings with ISO 6162-1 or ISO 6162-2 flange ends
ISO 12151-6:2009: Hose fittings with ISO 8434-6 60 degree cone ends
Hose Selection standards as below:
SAE100 R1AT, 853-1SN Standard for One Wire Braid Hose
SAE100 R2AT, 853-2SN, EN 857 2SC, EN 854 2TE Standard for Two Wire Braid Hose
SAE 100 R17, SAE 100 R16 for Compact Wire Braid Hose
SAE100 R12-EN856 R12, EN856 4SP, EN856 4SH, SAE100 R13-EN856R13, SAE100 R15-ISO3862 R15 for Wire Spiral Hose
4. HOW TO MEASURE ASSEMBLY
The overall length of the hose assembly is measured to the sealing surface of straight fittings or to the centre line of elbow fittings.As the following:
5. HOW TO MEASURE DISPLACEMENT ANGLE
To measure displacement angle of a hose assembly,point one end of coupling “1” to a vertical position upward.The angle can then be measured from the center line of coupling “1” in a clockwise direction to the center line of coupling “2”.
V 0 deg
V 90 deg
V180 deg
V 270 deg
Assembly angle tolerance permit ±3°
Hoses are packed in bundle.So the hose is difficult to draw to straight when it is assembled.When one end fitting of the assembly is elbow,it exists natural bending direction.
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