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The PVV21-1X/068-040RA15DDMB pump belongs to the PV Fixed Displacement Pumps series and is produced by Bosch Rexroth for hydraulic automation circuits that require predictable volume delivery. It rotates clockwise, allowing easy alignment with standard engine drives. A nominal displacement of 39.5 cm³ per revolution on the cover side supplies a fixed volume for auxiliary functions, while the flange side displacement of 67.5 cm³ per revolution handles higher demand loads in the same housing. The cover side can maintain a continuous outlet pressure of 160 bar, so actuators connected to that port receive steady medium-pressure flow. At 1500 rpm the cover side provides a maximum flow rate of 59 l/min, supporting medium-capacity valves. Installation is simplified by an SAE-B (101-2) mounting flange that matches common power-take-off patterns, and an NBR seal set resists mineral oil to keep internal leakage under control.
For the flange side circuit, the pump supports a continuous outlet pressure of 175 bar to drive cylinders that need higher force, and it reaches 100 l/min at 1500 rpm so large-volume consumers can be supplied without auxiliary boosting. Overall operating speed extends to 1800 min⁻¹ when the inlet pressure is at least 1 bar, while a minimum speed of 600 min⁻¹ prevents flow pulsation during low-load idle. Suction stability is maintained as long as the absolute inlet pressure stays above 0.83 bar, protecting the pump from cavitation. Hydraulic lines connect through an SAE 3/4-inch pressure port on the cover side, an SAE 1-inch pressure port on the flange side, and an SAE 2 1/2-inch suction port that matches BS21 threads, enabling straightforward tubing selection for both working circuits.
Continuous Outlet Pressure (cover Side)
160 bar
Continuous Outlet Pressure (flange Side)
175 bar
Direction Of Rotation
Clockwise
Max Flow @1500 Rpm (cover Side)
59 l/min
Max Flow @1500 Rpm (flange Side)
100 l/min
Max Speed (1 Bar Inlet)
1800 min–1
Min Inlet Absolute Pressure
0.83 bar
Min Speed
600 min–1
Mounting Flange
SAE-B (101-2)
Nominal Displacement (cover Side)
39.5 cm3/rev
Nominal Displacement (flange Side)
67.5 cm3/rev
Pressure Connection (cover Side)
SAE 3/4 in
Pressure Connection (flange Side)
SAE 1 in
Seal Material
NBR
Suction Connection (bs21)
SAE 2 1/2 in
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