Vickers | PVB20-LS-20-C-11
PVB20-LS-20-C-11
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The PVB20-LS-20-C-11 axial piston pump belongs to the PVB Piston Pumps series from Vickers and supplies variable-flow hydraulic power for automation circuits. A pressure compensator marked as code C modulates displacement so line pressure remains stable during load changes. The geometric displacement of 42.80 cm³ per revolution allows predictable volumetric output, and at 1,800 r/min the pump delivers up to 75.7 L/min to actuators. Maximum shaft speed is limited to the same 1,800 r/min to prevent excessive bearing load, while anticlockwise rotation, viewed from the shaft end, matches installations that drive from a left-hand prime mover. Inlet pressure may reach 1.0 bar, ensuring the piston set is flooded without cavitation, and outlet pressure is rated up to 210 bar for high-force cylinders. When water-glycol fluid is used, allowable pressure falls to 140 bar to protect internal surfaces from reduced lubricity.
The mounting interface supports a bolt circle diameter of 180.0 mm, and flange bolt holes of 18.25 mm diameter accept standard hardware for rigid attachment to motor adapters. A pilot diameter of 125.0 mm centers the housing, maintaining concentric alignment with the drive train. The splined steel shaft measures 32.0 mm in diameter; a 10.0 mm wide, 35.0 mm long key secures torque transfer to couplings. Ambient operating limits range from –20 °C to +70 °C so the pump can function in cold starts and elevated shop temperatures without degradation. These thermal limits combine with the preceding pressure and flow data to define reliable service parameters for automated hydraulic machinery.
Technical Specifications
Bolt Circle Diameter
180.0 mm
Displacement Control
Pressure Compensator (C)
Flange Bolt Hole Diameter
18.25 mm
Geometric Displacement
42.80 cm3/r (2.61 in3/r)
Max Ambient Temperature
+70 C (+158 F)
Max Inlet Pressure
1.0 bar (15 psi)
Max Outflow (1800 R/min)
75.7 L/min (20.0 gpm)
Max Outlet Pressure
210 bar (3000 psi)
Max Pressure (water Glycol)
140 bar (2000 psi)
Max Shaft Speed
1800 r/min
Min Ambient Temperature
–20 C (–4 F)
Pilot Diameter
125.0 mm
Rotation (viewed At Shaft End)
Anticlockwise
Shaft Diameter
32.0 mm
Shaft Key Length
35.0 mm
Shaft Key Width
10.0 mm
1620 Old Apex Road
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