Reliable EN853 2SN and EN857 2SC hose assemblies depend on matching the hose, fitting, and crimp settings—not simply using a fitting that appears to fit. Before production, confirm the hose and fitting are approved for assembly together, use the crimp dimensions specified for that combination, and verify the finished assembly. We recommend checking every assembly visually and dimensionally, while following the hose and fitting manufacturer’s instructions for pressure testing and acceptance criteria.
Both hose types use two wire-braid reinforcement layers, but their construction and dimensional requirements are not interchangeable by default. A crimp setting that works for one hose-and-fitting combination should not be assumed suitable for another. The checks below provide a practical quality-control framework; the applicable product specifications and approved assembly data remain the controlling references.
EN853 2SN and EN857 2SC are hydraulic hose designations associated with two-wire-braid construction. Their hose dimensions, flexibility characteristics, and fitting requirements can differ, so the designation alone is not enough to select a crimp setting. Confirm the exact hose model and size, the fitting type, and the manufacturer’s compatibility guidance before assembly.
Also consider the working environment. Pressure, temperature, fluid compatibility, movement, vibration, and routing can all affect whether a selected assembly is appropriate. If a machine specification calls for a particular hose standard or assembly configuration, do not substitute another option without approval from the responsible engineer or buyer.
Check that the hose packaging or hose marking identifies the required type and size, and inspect the fitting for the correct series, size, and condition. Confirm that the fitting is specified for the selected hose and crimp machine or tooling. If the assembly chart is missing, unclear, or does not list the exact combination, pause production and request confirmation from the supplier.
Before starting a batch, prepare the applicable work instructions, measuring tools, and crimp data. Keep hose and fitting identification traceable where your quality process requires it. Do not rely on visual similarity between fittings as proof of compatibility.
Measure the required hose length using the project drawing or assembly specification, accounting for the fitting configuration and any stated length convention. Cut the hose with equipment intended for hydraulic hose so the end is clean and as square as the process allows. A 90-degree cut relative to the hose axis is a useful preparation target; follow the cutting-tool instructions and the fitting supplier’s requirements.
Inspect the cut end for crushed reinforcement, loose wire, contamination, or damaged cover. Remove debris using a method that is suitable for the hose and assembly process. Avoid introducing particles into the hose bore, and do not alter the hose construction unless the fitting instructions specifically call for a defined preparation step.
Identify the required insertion depth or assembly reference mark from the fitting instructions. Mark the hose if this helps the operator confirm that the fitting has been fully inserted before crimping. Insertion depth is a measurable check in millimetres, but the correct value depends on the fitting design and must come from the applicable assembly data.
Check fitting orientation before crimping, especially when the assembly has angled or multi-plane ends. Once crimped, many fitting designs cannot be repositioned without damaging the assembly. Keep the fitting and hose clean during installation, and do not apply lubricant or assembly aid unless the manufacturer permits it.
Use the crimp diameter and machine setup specified for the exact hose-and-fitting combination. Crimp diameter is measured in millimetres, but there is no universal value that can safely be applied to all EN853 2SN or EN857 2SC assemblies. The required setting can vary with hose size, fitting design, tooling, and machine configuration.
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Check the crimp machine and dies for cleanliness, correct identification, and serviceable condition. Make a first-off assembly when your production procedure requires one, then measure it with a suitable calibrated or verified tool. Compare the measurement with the approved range, and do not release the batch if the result falls outside that range.
Perform a 100% visual check as a recommended quality-control practice. Look for an uneven or off-centre crimp, damaged hose cover, exposed reinforcement, fitting movement, contamination, or signs of incorrect insertion. A visual check does not replace dimensional inspection or required performance testing.
Measure the crimp at the points and in the manner specified by the applicable instructions. Record the hose and fitting identification, crimp measurement, machine or tooling reference, and inspection result when required by the production or customer process. If the assembly fails a check, segregate it and investigate the cause rather than making an undocumented adjustment.
Pressure testing should follow the procedure and acceptance limits specified for the assembly, order, or applicable quality system. The required test pressure, duration, and acceptance criteria are not universal values for every 2SN or 2SC assembly. Obtain them from the relevant technical documentation rather than estimating them from the hose designation or working-pressure marking.
Use suitable test equipment and follow a controlled safety procedure. Keep personnel away from potential failure paths, secure the assembly as required, and depressurize the system before handling a tested hose. Do not use an assembly that leaks, shows damage, or otherwise fails the approved acceptance criteria.
Use a written assembly checklist that identifies the hose model, fitting series, hose size, cut length, insertion reference, crimp data, inspection method, and test requirement. Keep the current version of the applicable setup information at the workstation, and train operators to stop when a part or instruction cannot be verified. These controls help reduce reliance on memory and make it easier to investigate a rejected assembly.
When changing a hose supplier, fitting design, crimp machine, or die set, confirm whether the existing setup remains approved. A change in one component can affect the assembly process, so request updated compatibility and crimp information before production resumes. For new or changed configurations, agree on first-off approval and documentation expectations with the customer or engineering team.
For B2B buyers, supplier support should include clear product identification and access to relevant technical information for the hose and fitting combination. Ask suppliers to confirm the exact product designation, sizes, application limits, compatibility guidance, and crimp instructions available for the requested configuration. If the project requires inspection records or a defined test procedure, state those needs during quotation and order review.
Hengshui Xinchi Hose Manufacturing Co., Ltd. supplies hydraulic hose products and can discuss hose selection and purchasing requirements for EN853 2SN and EN857 2SC applications. Share the required hose type, size, operating conditions, fitting details, target quantity, and destination market when requesting a quotation. This information helps us assess the request and clarify which product and documentation details need confirmation before ordering.
To check fittings and crimps on EN853 2SN and EN857 2SC hoses, verify component compatibility first, prepare a clean and square hose end, install the fitting to its specified depth, and crimp to the approved combination-specific dimensions. Inspect every finished assembly visually, measure it against the applicable limits, and follow the approved pressure-test procedure when one is required. Never substitute a generic crimp value or test condition for the manufacturer’s documented requirements.
Your next step is to collect the hose and fitting identifiers, application details, and required inspection or test criteria before production or sourcing. If any compatibility or crimp setting is uncertain, ask the hose or fitting supplier to confirm the applicable data before assembling the hose. Contact Hengshui Xinchi Hose Manufacturing Co., Ltd. with your project specifications to discuss product availability and hose selection support.
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