Category Archives for Hydraulic Pumps
Yuken Reciprocal Pumps
These pumps have pistons installed at right angles against the pump rotating shaft in a plane including the shaft. The pistons reciprocate with alternately moving cranks or eccentric cams. Pumps suffer from discharge pulsation because they have a fewer pistons … Continue reading
Yuken Screw Pumps
These pumps operate by rotating two or three screw shafts, which are aligned and engaged in parallel, to continuously convey a volume structured with screw leads. Unlike the other types of pumps, they have no intermittent displacement variation and abrupt … Continue reading
Yuken Gear Pumps
These pumps operate with two gears engaged with each other and rotating to feed a hydraulic fluid from the suction area to the discharge area. They all have fixed (constant) displacement capacities. They are categorized into external and internal gear … Continue reading
Yuken Variable Displacement Vane Pumps
Vane pumps can be transformed to the unbalanced type by making the center of the round cam ring eccentric to the rotating shaft; this type provides a pair of suction and discharge processes. The pumps can also be transformed to … Continue reading
Yuken Multiple Vane Pumps
These pumps are categorized into double and triple types. The double pump has two sets of cartridge kits on one shaft, and each of the kit works independently. Generally, this type contains a combination of low-pressure large- volume and high-pressure … Continue reading
Yuken Single High Pressure Vane Pump
These pumps operate at 31.5 to 40 MPa (4 569 to 5 802 psi). The PV11R series pumps are available in two sizes, ranging from 2 to 22 cm3/rev (.122 to 1.34 cu.in./rev). Some of them have the pressure loading … Continue reading
Yuken Single Middle Pressure Vane Pump
These pumps operate at 16 to 21 MPa (2 321 to 3 046 psi). The PV2R series, specially designed to reduce the noise level, are available in four sizes, ranging from 6 to 237 cm3/rev (.366 to 14.46 cu.in./rev). The … Continue reading
Yuken Single Low Pressure Vane Pump
These low pressure vane pumps, operated at 5 to 7 MPa (725 to 1 015 psi), are supplied as the PVL1, 50T, 150T, 250F, and 500F series. The pumps are available in the displacement of 1.5 to 498 cm3/rev (.092 … Continue reading
Yuken Vane Pumps
These pumps intake and discharge fluid according to the change of space enclosed by the vanes and the cam ring that rotates by means of the rotor. Vane pumps in a low/middle pressure range from approximately 7 to 25 MPa … Continue reading
Yuken Radial Piston Pumps
These pumps have pistons installed in a pattern radial to the pump rotating shaft. The pumps are more suitable for high pressure operation than the axial type. Figure 2.7 shows the structure of a typical radial piston pump. Piston stroke … Continue reading