For a reliable EN853 2SN or EN857 2SC hose assembly, match the hose, fitting, ferrule, and crimping instructions as one system. Before crimping, confirm the hose designation and size, fitting compatibility, cut quality, and insertion depth; after crimping, measure the finished crimp diameter in millimetres and inspect the assembly against the fitting manufacturer’s limits. Do not assume that 2SN and 2SC hoses use interchangeable fittings or the same crimp setting. The correct crimp diameter and any stripping requirements depend on the specific hose-and-fitting combination.
A hydraulic hose assembly performs as a connected system: the hose reinforcement, fitting stem, ferrule, and crimp must work together. A hose that meets its product specification can still form an unsuitable assembly if the fitting is mismatched, the insertion depth is incorrect, or the crimp is outside the specified range. Poor preparation can also damage the reinforcement or leave contamination inside the hose.
EN853 2SN and EN857 2SC are both two-wire-braid hose types, but their construction and dimensions are not identical. EN857 2SC is generally associated with a more compact hose design, while the exact outside diameter, bend radius, and pressure rating depend on size and manufacturer data. Always use the technical information for the actual hose and fitting rather than selecting by standard designation alone.
Read the hose marking and confirm that it identifies the intended type and size, such as EN853 2SN or EN857 2SC. Check the fitting part number, ferrule, and crimping instructions against the hose manufacturer’s or fitting supplier’s compatibility information. If the assembly uses a fitting system that requires skiving, confirm whether the cover, the tube, or neither should be removed before proceeding.
Do not treat a visually similar fitting as proof of compatibility. A fitting designed for one hose construction may not provide the intended retention or sealing when used with another. If documentation is unclear, pause production and ask the fitting supplier to confirm the combination in writing.
Use a hose-cutting method suitable for the product and follow the equipment manufacturer’s safety guidance. Aim for a clean, square cut—approximately 90° to the hose axis—so the end can seat evenly against the fitting stop. Avoid crushing, pulling, or overheating the hose during cutting, as these can affect the end condition.
Remove loose debris from the hose bore using a method that will not damage the tube or introduce contaminants. Check the cut face for ragged reinforcement, loose wire, or material obstructing the passage. Record the hose size and cut length where traceability or job documentation requires it.
Mark the insertion depth using the fitting maker’s specified method, or use a controlled reference mark if that method is allowed by your work instruction. Push the hose fully onto the fitting stem until it reaches the intended stop, while keeping the hose and fitting aligned. The mark helps reveal whether the hose has moved during crimping or handling.
For bent fittings or assemblies with a required clocking position, confirm orientation before crimping. A fitting can be correctly attached but still be unsuitable for installation if its angle is wrong. Use the assembly drawing or customer specification to verify the position rather than relying on memory.
Select the die set and machine setting specified for the exact hose, fitting, and ferrule combination. Check that the dies are clean, correctly installed, and suitable for the ferrule size, then confirm that the machine is operating according to its instructions. Do not substitute a setting from a different hose size or from another manufacturer’s product without verified approval.
Where production procedures require it, make a first-off assembly and check it before continuing with a batch. This helps identify setup errors early, but it does not replace the applicable crimp specification or required inspection. Keep the setup information with the job record so operators can verify which combination was used.
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Measure the crimp diameter in mm at the location and in the manner specified by the fitting supplier. Compare the reading with the allowed range for that particular assembly; there is no single universal crimp diameter for all EN853 2SN or EN857 2SC hoses. If the measurement is outside the documented limit, segregate the assembly and investigate the setup before making more units.
Inspect the ferrule for an even crimp and visible damage, and check that the hose has not pulled back from its insertion reference mark. Look for cuts, exposed reinforcement where it is not intended, contamination, or deformation that could affect installation. A visual check is useful, but it cannot replace dimensional checks or any test required by the assembly specification.
| Assembly stage | What to verify | Acceptance basis |
|---|---|---|
| Before cutting | Hose type, size, condition, fitting, and ferrule | Product markings and confirmed compatibility data |
| After cutting | Square end, clean bore, and undamaged reinforcement | Work instruction and hose supplier guidance |
| Before crimping | Insertion depth, fitting orientation, and machine setup | Fitting and machine instructions |
| After crimping | Crimp diameter, ferrule condition, and hose position | Specified limits for the exact assembly |
EN853 2SN and EN857 2SC should not be treated as identical simply because both use two wire braids. Differences in construction and dimensions can affect fitting selection and crimp requirements. Use the documented setting for each approved combination, and keep separate setup records where the specifications differ.
Crimp diameter limits and skiving instructions are system-specific. An arbitrary adjustment can produce an assembly that looks acceptable but does not meet the supplier’s requirements. If the relevant instructions are missing, obtain them before assembly rather than estimating a value.
Without basic production records, it may be difficult to identify which hose, fitting, machine setting, or inspection result applies to an assembly. Record the information required by your quality process, such as product identification, measured crimp diameter in mm, operator, and inspection status. Retain records in line with your internal procedures and customer requirements.
Decide on inspection and testing requirements from the applicable assembly specification, customer requirements, and your quality plan. If pressure testing is required, use the specified test pressure and procedure for the completed assembly; do not infer a test value from the hose type alone. The pressure rating marked or documented for a hose does not by itself establish the correct proof-test procedure for every finished assembly.
Use suitable protective measures during testing and keep personnel away from potential leak or failure paths. Never search for a pressurized leak with a hand, and depressurize the system before making adjustments. Follow the test equipment manufacturer’s instructions and your site’s safety procedures.
When sourcing assemblies or components, share the application details needed to confirm suitability. Useful information includes the hose standard and size, working pressure, fluid, operating temperature, routing and bend constraints, fitting ends, and any customer-specific testing or documentation requirements. The operating pressure should be stated in bar or another clearly identified unit and checked against the ratings of all assembly components.
Ask suppliers to clarify which fitting and ferrule are intended for each hose, whether skiving is required, and which crimp diameter range applies. Confirm how product identification, batch records, inspection, packaging, and delivery requirements will be handled. Clear specifications reduce avoidable revisions during sampling and production.
The essential fitting and crimping checks for EN853 2SN and EN857 2SC hoses are to verify compatibility, prepare a clean square cut, control insertion depth and orientation, follow the exact crimp instructions, and inspect the finished assembly against documented limits. Measure the crimp diameter in mm and record the result where your quality process requires it; never use a generic value in place of the fitting supplier’s specification. Before placing a production order, confirm the hose, fitting, application conditions, and inspection requirements together.
At Hengshui Xinchi Hose Manufacturing Co., Ltd., we welcome B2B enquiries about hose selection and product information for hydraulic applications. Send us the required hose type, size, operating conditions, and fitting details so we can discuss the relevant product information and help you define the next sourcing step.
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