SAE J1273 specifies interacting factors influence hose service life and the ability of each hydraulic fluid-power system to operate satisfactorily, and the combined effects of these factors on service life are often unpredictable. Therefore, hydraulic hose specification documents should not be construed as design standards.
For applications outside the specifications in SAE J517, SAE J514, or other relevant design standards, performance of hose assemblies should be determined by appropriate testing.
Carefully analyze each system. Then design routings and select hose and related components to meet the system-performance and hose-service-life requirements, and to minimize the risks of personal injury and/or property damage. Consider the following factors:
System Pressures
Suction
External Pressure
Temperature
Permeation
Compatibility Between Hose Materials and Hydraulic Fluids
Environment
Static-Electric Discharge
Sizing
Unintended Uses
Specifications and Standards
Unusual Applications
Hose Cleanliness
Hose Fittings
Vibration
Hose Cover Protection
External Physical Abuse
Swivel-Type Adapters
Live Swivels
Slings and Clamps
Minimum Bend Radius
Elbows and Adapters
Lengths
Hose and Machine Tolerances
Hose Length Change Due to Pressure
Hose Movement and Bending
Prevent Hose Bending in More Than One Plane
