Bosch Rexroth | PVV21-1X040-018RA15DDMB
PVV21-1X/040-018RA15DDMB
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The PVV21-1X/040-018RA15DDMB pump is part of the PV Fixed Displacement Pumps series manufactured by Bosch Rexroth for hydraulic automation that demands a constant delivery volume. It turns clockwise, so drive coupling and hose routing must follow that rotation. The flange side displacement of 40.1 cm³ per revolution sets the primary output and enables a flow of 59 L/min at 1500 rpm, while the cover side displacement of 18.0 cm³ per revolution yields 26 L/min for secondary circuits. A continuous pressure limit of 175 bar on the flange side safeguards bearings and seals during steady load. The pump operates with HLP mineral oil conforming to DIN 51524-2, and an NBR seal package maintains fluid integrity under the specified pressures. Intake oil passes through a SAE 2 1/2 in suction connection that keeps inlet velocity low to reduce cavitation.
The cover side pressure port is SAE 3/4 in, and the flange side port is SAE 1 in, so selecting the correct hose ends prevents flow restriction. The cover side withstands a continuous pressure of 210 bar, providing a higher allowable load for auxiliary functions. Maximum drive speed is 1800 rpm, expanding the flow range when faster actuator response is required. Reservoir design must keep absolute inlet pressure above 0.83 bar to avoid vapor formation at the gears. Delivered fluid should meet a cleanliness class of 20/18/15 per ISO 4406 to protect internal surfaces from abrasion. Together, these specifications guide proper installation and ensure dependable performance in automated hydraulic systems.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Continuous Pressure (cover Side)
210 bar
Continuous Pressure (flange Side)
175 bar
Direction Of Rotation
Clockwise
Displacement (cover Side)
18.0 cm3/rev
Displacement (flange Side)
40.1 cm3/rev
Inlet Pressure Min (abs)
0.83 bar
Max Flow (cover Side, 1500 Min-1)
26 l/min
Max Flow (flange Side, 1500 Min-1)
59 l/min
Max Speed
1800 min-1
Pressure Fluid
HLP Mineral Oil (DIN 51524-2)
Pressure Port (cover Side)
SAE 3/4 in
Pressure Port (flange Side)
SAE 1 in
Seal Material
NBR
Suction Connection
SAE 2 1/2 in
1620 Old Apex Road
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