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03φ51φ200MPa–W:With couplers on both sidesUH-14:With ROC-2K-H*■Hydraulic symbol (coupled couplers)■UH14■UH22■UH14■ROC-2K-H■ROC-2K-R■Dimensions of couplings■ROC-2Klil CyndersPumpsVavesAccessories300MPa–*The hoses marked “*” are filled with the hydraulic oil before shipping unless otherwise specified. Model code structureUH14-1Ultrahigh-Pressure Nylon Hoses (UH14/UH22 Series) Couplers (S-4/ROC-2K Series) ■ Specifications■ SpecificationsModel code structureS-4RUltrahigh-Pressure Hoses/Ultrahigh-Pressure Couplers (200 MPa)* For precautions for and maintenance of ultrahigh-pressure hoses, see page 179.● Do not hold an ultrahigh-pressure nylon hose while pressure is applied. If the hose is broken while held by hand, the high-pressure hydraulic oil could spurt and cause severe injury, for example, a pierced hand. ● Before work starts, check the following: damage to the hose, swelling of the hose (sheath), exposure of the reinforced layer (external damage), bent (deformation), leakage from the joints, etc. If any of the above prob-lems is found, replace the hose with new one immediately because the use of a damaged hose is dangerous. Even if there are no abnormalities in appearance, there may be scratches, pinholes, etc. inside the hose. Replace the hose regularly taking the operating conditions into account. Note 1. The operating temperature range shown above can be applied to the hose alone.Note 2. The approx. weight represents the weight of the hose alone. It does not include the joints at both ends and the protection.S-4RS-4HROC-2K-RROC-2K-H*When the ROC-2K couplers are attached, the special joint (NU14) may be needed (see page 216). ● Pressure must not be applied to a ROC-2K-R coupler alone. Otherwise, the equipment may be damaged. ● It is dangerous to connect or disconnect the couplers while pressure is applied. Doing so may allow compressed oil to flow out, causing　injury. ● Securely and completely connect the couplers. Not doing so could cause pressure not to rise, the hydraulic oil not to flow, or other problems. ● If the pressure fluctuates often or vibration is transmitted to the couplers, regularly check the looseness of the cap nut. ● If a cylinder that works normally with S-4 couplers stops suddenly, the most likely cause is looseness (a gap) between the couplers. 　Tighten the couplers again using a tool if a gap exists.● A duster cap is included with a coupler. Attach the cap to the coupler after use to prevent dust.Ultrahigh-pressure nylon hoseNC:No couplers M14×1.5HEX22● Ultrahigh-pressure hoses with a maximum operating pressure of 200 MPa. ● Two types of thread sizes, “M22 x 1.5” and “M14 x 1.5” are available. ModelMaximum operating pressureMPaUH14UH22200■UH22ModelS-4RS-4HROC-2K-RROC-2K-HS-4ROC-2K■S-422:M22 x 1.5ROC-2K85Overall length (m) Blank:With coupler on one sideThread size14:M14 x 1.5CouplerS-439.5M14×1.565.8HEX24Thread sizeM14 x 1.5M22 x 1.5Plastic Operating fluid temperature range°CApprox. weightkg0.40.20.10.25 to 60-30 to 100■S-4RNo.79E since2025UH-14:With ROC-2K-HUH-22:With S-4HUH-22:With S-4H*R:Cylinder side couplerH:Hose side couplerOperating temperature range°CHydraulic oilMaterial-40 to 50(Note 1)General hydraulic oilUH14-1NCUH22-1NCMaximum operating pressureMPaOperating fluidGeneral hydraulic oil200■Dimensions of couplings(S-4)(ROC-2K)Standard overall lengthmVolumecm3/mExpansion volumecm3/m1/2/36/1019.63.2(200)■S-4HMinimum bend radius mmApprox. weightkg/m0.3(Note 2)120214