Bosch Rexroth | AA10VSO18DRG31R-VKC62N00
AA10VSO18DRG/31R-VKC62N00
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The AA10VSO18DRG/31R-VKC62N00 variable displacement pump belongs to the A10VSO Variable Pumps series and is produced by Bosch Rexroth for hydraulic automation circuits. It delivers 18 cm³ per revolution, establishing the volume of fluid moved with each shaft turn. A permissible speed of 3,900 rpm defines the upper rotational limit for short-term peaks, while an output of 15.6 gpm at 3,300 rpm indicates flow capability at common operating speed. The pump tolerates a maximum system pressure of 5,100 psi and a continuous nominal pressure of 4,100 psi, allowing high-load operation without over-stressing components. Cavitation is avoided by keeping inlet pressure above 12 psi absolute. Clockwise rotation matches right-hand prime movers, and a weight of 28 lb facilitates handling during installation.
The unit’s speed at full displacement is limited to 3,300 rpm to maintain volumetric efficiency when the swashplate is at maximum tilt. Control oil enters through a pilot port threaded 7/16-20 UNF-2B, and case drainage exits via a 9/16-18 UNF-2B port to keep housing pressure below the 30 psi absolute limit. High-pressure delivery uses an SAE J518 3/4-inch flange, whereas suction flow is drawn through an SAE J518 1-inch connection to minimize inlet losses. Continuous operation at 4,100 psi absorbs 38 hp from the drive motor and produces 59 lb-ft of shaft torque. These interface sizes and power requirements help designers match the pump with appropriate motors, hoses, and fittings.
Technical Specifications
Displacement
18 cm3/rev
Drain Port Thread
9/16-18 UNF-2B
Max Case Pressure (abs)
30 psi
Max Flow (3300 Rpm)
15.6 gpm
Max Permissible Speed
3900 rpm
Max Speed (vg Max)
3300 rpm
Maximum Pressure
5100 psi
Min Inlet Pressure (abs)
12 psi
Nominal Pressure
4100 psi
Pilot Port Thread (x)
7/16-20 UNF-2B
Power At 4100 Psi (nnom)
38 hp
Pressure Port Size
SAE J518 3/4 in
Rotation Direction
Clockwise (R)
Suction Port Size
SAE J518 1 in
Torque At 4100 Psi
59 lb-ft
Weight (n00)
28 lb
1620 Old Apex Road
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