20449078-hydraulic-hose.319.3-1
Product Name: Hydraulic Hose (Part No. 20449078)
Description:
This component is a high-pressure hydraulic hose assembly designed for use in the hydraulic power unit (HPU) of a waterjet cutting system. It is a flexible conduit used to transmit hydraulic fluid under pressure to actuate the intensifier pump. The assembly typically includes the hose body with a synthetic rubber inner tube, a single or multiple wire braid reinforcement for strength, and crimped steel end fittings.
Applications:
Connecting the hydraulic pump to the intensifier cylinder to supply pressurized oil.
Routing hydraulic fluid between the pump, control valves, manifold, and reservoir.
Used in the low-to-medium pressure side of the waterjet hydraulic circuit (typically below 5,000 PSI).
Characteristics:
Flexibility: Allows for easier routing of lines around the machine frame compared to rigid tubing.
Vibration Dampening: Absorbs vibrations generated by the hydraulic pump to protect rigid components.
Standard Fittings: Typically fitted with JIC (37° flare) or NPT (National Pipe Thread) ends for secure, leak-free connections.
Color Coding: Often features a black outer cover, sometimes with colored stripes or collars to identify specific circuits (e.g., supply vs. return).
Maintenance:
Visual Inspection: Regularly inspect the hose for signs of abrasion, cracking, blistering, or hardening of the rubber, especially near fittings.
Leak Detection: Check fittings for wetness or drips; hydraulic leaks can degrade nearby electrical components or cause slipping hazards.
Abrasion Protection: Replace or install protective sleeving where hoses contact machine edges or moving parts.
Replacement: If a hose shows signs of damage, replace it immediately. Do not attempt to patch a high-pressure hydraulic hose.
Full Depressurization: Always fully depressurize the hydraulic system (turn off pump and cycle intensifier) before replacing a hydraulic hose to prevent high-pressure oil injection injuries.








