R ≦ 0.3
R1 ≦ 0.5
活塞杆表面应作 0.8~1.6 μ mRmax (0.2~0.4 μ mRa)的抛光
D-4 is suitable for the hydraulic cylinder piston and piston rod, choose the size in inches.
Properties
• Material: TPU, (D-6): TPU + NBR
• Specific gravity (ASTM D792): 1.19
• hardness (ASTM D2240): 93
• Tensile strength (ASTM D412): 276
• 100% modulus (ASTM D412): 100
• 300% modulus (ASTM D412): 191
• 70 小时 / 70ºC under compression deformation rate (ASTM D395B): 42
• 70 小时 / 100ºC under compression deformation rate (ASTM D395B): 56
Oil resistance
• Test oil: wear hydraulic oil 46 #
• Test temperature (ºC): 100
• Test Time (hours): 100
• change in hardness (Shore A): 0
• Tensile Strength Change (%): -5
• Volume change (%): +0.12
Working conditions
• Maximum operating pressure: 30 Mpa, (D-6): 35Mpa
• Operating speed: 0.03 ~ 0.5 m / sec
• Operating Temperature: -20ºC ~ 100ºC
