Vickers | PVB6A-RS-20-CA-11
PVB6A-RS-20-CA-11
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The PVB6A-RS-20-CA-11 pump belongs to the PVB Piston Pumps series and is produced by Vickers for use in hydraulic automation circuits where controlled flow is required. It is an axial piston, variable-displacement unit, so delivered volume adjusts to system demand and reduces wasted input power. Clockwise shaft rotation aligns with common right-hand drive layouts found on mobile and industrial machinery. A geometric displacement of 13.81 cm³ per revolution establishes the fundamental output capacity, while a rated flow of 22.7 L/min is achieved at 1800 rpm for moderate actuator speeds. The rotating group tolerates a maximum shaft speed of 1800 rpm, allowing direct coupling to standard four-pole electric motors without gear reduction. Pressure regulation is handled by a pressure compensator control that trims displacement as the outlet approaches the 140 bar limit, preventing overload. System piping connects through 11/16-12 UNF-2B SAE O-ring main ports, providing reliable sealing for high-pressure service.
The swashplate operates on one side of center, giving a single-direction displacement zone that simplifies motion control logic in closed-loop circuits. Case drainage is routed through a 9/16-18 UNF-2B SAE O-ring port to keep housing pressure low and protect shaft seals. Suction conditions must remain under 1.0 bar absolute inlet pressure to avoid cavitation during high-speed operation. The pump is specified for ambient temperatures from −20 °C to +70 °C, accommodating both cold-start field equipment and warm factory floors. An operating viscosity window of 220 to 13 cSt is permissible, with a recommended range of 54 to 13 cSt offering optimum efficiency and reduced wear. Power transmission to the drive train uses a 4.8 mm square by 25.4 mm long shaft key, ensuring positive torque transfer to standard couplings without custom hardware.
Technical Specifications
Case Drain Port Thread
9/16-18 UNF-2B (SAE O-ring)
Control Type
Pressure Compensator (C)
Displacement Zone
One Side Of Center (S)
Geometric Displacement
13.81 cm³/rev (0.84 in³)
Main Port Thread
11/16-12 UNF-2B (SAE O-ring)
Max Ambient Temperature
+70 C
Max Inlet Pressure
1.0 bar (15 psi)
Max Outlet Pressure
140 bar (2000 psi)
Max Shaft Speed
1800 rpm
Min Ambient Temperature
-20 C
Pump Type
Axial Piston (Variable Displ.)
Rated Flow @1800 Rpm
22.7 L/min (6 gpm)
Shaft Key Size
4.8 mm sq x 25.4 mm long
Shaft Rotation
Clockwise (R)
Viscosity Range (operating)
220 to 13 cSt
Viscosity Range (recommended)
54 to 13 cSt
1620 Old Apex Road
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