Assembly, production and routing
Technical reference and selection guides on assembly, production and routing.
15 guides
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Hose-fitting compatibility and system approval
A hose and a fitting having the same nominal size does not prove that they can be safely crimped together. The hose series, fitting series and assembly data must be treated as a verified system. A brand name alone is no…
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How is crimp data verified?
Crimp data must be linked to the hose, fitting, ferrule, size, machine and manufacturer instructions. A crimp diameter taken from another brand or a similar hose does not provide safe equivalence; a verified combination…
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Defining skive and no-skive assembly
Hose preparation can differ between skive and no-skive fitting systems. Which layer is prepared, where and to what extent is taken only from the manufacturer's instructions for the relevant hose-fitting system; there is…
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Cleanliness check after hose cutting
Hose cutting and cleaning are part of the assembly; particles that get inside are not merely a cosmetic problem. The cutting method, cleaning and protection of the ends must be determined by the manufacturer's instructi…
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Post-crimp measurement and record checklist
A post-crimp record must show the actual assembly and inspection result, not just the machine setting. The hose, fitting, ferrule, instruction revision, measured values, equipment and assembly identification must be kep…
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How to interpret minimum bend radius
Minimum bend radius is the geometric limit specified for a hose under the relevant service condition. The static/dynamic distinction in the catalog and the measurement reference of the radius must be checked; the fact t…
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Torsion and tensile load on hoses
A hose must not be used as a tension member or a torsion spring. The end orientations and routing must be arranged so that no unwanted tensile or torsional load is transferred to the hose throughout the motion; minimum …
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Hose length and motion envelope on moving equipment
Hose length is not the shortest distance between two connections. It must be determined by evaluating together the end geometry, all positions of the motion, the minimum bend radius, the straight sections and the suppor…
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Straight length requirement at the fitting exit
At the fitting exit, the straight section and bending conditions required by the manufacturer must be maintained rather than forcing the hose into a sharp turn immediately. The required length depends on the product fam…
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Using hose guides, supports and protectors
Protective sleeves and supports complement correct hose routing; they do not automatically correct a wrong installation. The choice of protection must address rubbing, heat, impact and maintenance access together, and m…
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How are the A and B ends of a hose assembly defined?
Defining the A and B ends of a hose assembly separately prevents the two different connections of the same hose from being confused. For each end, the connection family, size, orientation, sealing, material and, where a…
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Distinguishing cut length from overall length
Cut length is the length of the hose body to be prepared; overall assembly length is the completed dimension between defined end references. Without knowing the fitting contributions and the measurement method, no relia…
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Designing a hose production batch record
A production batch record links the assemblies prepared under the same production conditions and the components used. Batch information does not replace individual hose identifications; it serves to show which products …
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What information should a hose label contain?
A hose label must link the physical assembly to its technical records. The identification, product or assembly designation and the necessary service information must be legible; unverified pressure, temperature or certi…
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The difference between a serial number and a batch number
Batch traceability follows a common production group, while individual serial traceability follows each physical hose. If maintenance, test and service history is specific to one hose, an individual identification is re…
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