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seirosseccA■L3/8■L3/8EHEXsehctisehcnarBlistnoJseguaGerusserPsehctiwSerusserPwSsrepuoCsesoHlsOiLDF68GHJ Handling Precautions for High-Pressure Hoses and MaintenanceLow-Pressure HosesHydraulic oilMaterialMineral-based hydraulic oilSynthetic rubber ● Exclusively used for the return line and connects an individual valve and the tank　port of the pump. ● Because one end has an R (male) thread and the other has an R (male) thread　with a flexible cap nut, no couplers are required. ● The 3/4 and 8/8 models are make-to-order products. ● Hoses having an overall length other than the standard lengths can be　manufactured. Operating temperature range (°C)(Note 1)ModelL3/8-*-40to 100L1/2-*3.5L3/4-*L8/8-*● Please use high-pressure hoses with a They are highly reliable hoses, whose durability is checked regularly using the repeat pressure test machine. ■ SpecificationsMaximum operating pressureMPa logo. 3/8:R3/81/2:R1/23/4:R3/4(Make-to-order product)8/8:R1(Make-to-order product)Hoses● Do not hold a high-pressure 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 dam-age), bent (deformation), leakage from the joints, etc. If any of the above problems 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.● Use the hose with the specified minimum bend radius (R) or larger. In addition, if the hose is moved during operation, install it so that the　bend radius must not be smaller than the minimum one. ● Since the hose shrinks due to the internal pressure, install it so that it has the flexibility. ● When the high-pressure hose contacts the floor or an object, the hose is rubbed due to the shrinkage and vibration while pressure is　applied. In this case, protect the hose using a support or a cushion. ● Do not move the equipment by pulling the high-pressure hose.● Do not allow the hose to be run over by a vehicle or the like. Also, do not drop a heavy object on the hose. Be sure to provide a protection to　the high-pressure hose that is expected to be put at risk. 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. Thread sizeLow-pressure hose151931.52538.518223629.546203010413322361043.535.556Overall length03:0.3 m05:0.5 m1:1 m2:2 m3:3 mModel code structureThread sizeAExternal diameterϕ BInternal diameterϕ CR3/815.29.5R1/218.512.7R3/427.119R133.925.4No.79E since2025Minimum bend radius mmApprox. weightkg/m(Note 2)600.15800.20521300.381650.521793/8-1