Vickers | 2520VQ21A11-1BB20
2520VQ21A11 1BB20
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The 2520VQ21A11 1BB20 pump belongs to the Vane Pumps series manufactured by Vickers. This double-section unit supplies hydraulic oil for automation circuits where two separate flow rates are required. The front section displaces 67.5 cm³ per revolution, so it moves 38 US gallons per minute when the shaft runs at 1200 r/min, delivering steady volume for primary actuators. A right-hand clockwise rotation matches common engine drives and simplifies alignment. The front stage tolerates continuous pressures up to 210 bar, enabling operation in medium-pressure mobile or industrial systems, and it can be spun safely to 2500 r/min to cover speed-based flow control. Fluid enters through a SAE four-bolt flange inlet, a pattern chosen for rigid, leak-free pipe connections. The assembly weighs 20.5 kg (45 lb), allowing a single technician to handle installation without lifting equipment.
The rear section augments the first by supplying a secondary circuit with 36.4 cm³ per revolution, producing 23 US gallons per minute at the same 1200 r/min to power auxiliary functions. It withstands the same 210 bar working pressure but offers a higher permissible speed of 2700 r/min, so flow can be increased independently of the front stage. Outlet line 1 uses a SAE four-bolt flange and is positioned 90 degrees counter-clockwise from the inlet when the cover is viewed, which aids layout of the primary return hose. Outlet line 2 also employs a SAE four-bolt flange and sits 45 degrees counter-clockwise from the inlet, providing an alternative routing point for the secondary flow. Together these port options simplify manifold design and reduce hose bends while keeping connection standards uniform across both discharge paths.
Technical Specifications
Delivery @1200 R/min (front)
38 USgpm
Delivery @1200 R/min (rear)
23 USgpm
Front Displacement
67.5 cm³/rev
Inlet Port Connection
SAE 4-bolt flange
Max Pressure (front)
210 bar
Max Pressure (rear)
210 bar
Max Speed (front)
2500 r/min
Max Speed (rear)
2700 r/min
Outlet No.1 Connection
SAE 4-bolt flange
Outlet No.1 Position (cover View)
90° CCW From Inlet
Outlet No.2 Connection
SAE 4-bolt flange
Outlet No.2 Position (cover View)
45° CCW From Inlet
Rear Displacement
36.4 cm³/rev
Rotation
Right-Hand (Clockwise)
Weight
20.5 kg (45 lb)
1620 Old Apex Road
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