Chapter 2 Fundamental Hydraulic Fluid Mechanics Tab.2-2 The range of viscosity of hydraulic oil adapted to pumps viscosities(10-6m2/s) Viscosities(10-6m2/s) Types 540℃ 40~80℃ Types 5~40℃ 4080℃ ① ① ① ① P<7MPa 30~50 40~75 Gear 30~70 95≈165 pumps Vane Pumps Radial P≥7MPa 50~70 50~90 piston 30~50 65240 pumps Axial Screw pumps 30~50 40~80 piston 3070 70~150 pumps D5~40C.40-80C are described the temperatures of hydraulic system. 10 Homepage List Upwards Dowrwards Retumn Exit Chapter 2 Fundamental Hydraulic Fluid Mechanics 10 Tab. 2-2 The range of viscosity of hydraulic oil adapted to pumps Types viscosities (10-6 m2 /s) Types Viscosities(10-6 m2 /s) 5～40℃ ① 40～80℃ ① 5～40℃ ① 40～80℃ ① Vane Pumps P< 7MPa 30～50 40～75 Gear pumps 30～70 95～165 P≥7MPa 50～70 50～90 Radial piston pumps 30～50 65～240 Screw pumps 30～50 40～80 Axial piston pumps 30～70 70～150 ①5～40℃、40～80℃are described the temperatures of hydraulic system