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BOSCH REXROTH
R902148755

  • BOSCH REXROTH
  • Material:R902148755
  • Model:AA4VG90DA2D8/32R-NSF52F071KP-S *FNI*

Due to extremely high demand, please call 877-366-7226 for availability

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth AA4VG90DA2D8/32R-NSF52F071KP-S (R902148755) is a highly efficient axial piston variable pump designed for hydrostatic transmissions in closed circuits. This particular model boasts an integrated boost pump that ensures both boost and pilot oil supply, enhancing the overall performance and reliability of the system. The flow direction within the pump changes smoothly, which is facilitated by the movement of the swashplate through its neutral position. This feature contributes to the precise control of the hydraulic drive. In terms of safety and operational control, this model comes with high-pressure relief valves that incorporate a boost function. Additionally, it includes an adjustable pressure cutoff as a standard feature, allowing for customizable pressure settings to suit specific application requirements. The boost pressure relief valve is another critical component that contributes to the pump's ability to manage system pressures effectively. For those applications requiring additional hydraulic functions, this pump offers a through-drive capability. This allows for the mounting of further pumps up to the same nominal size directly onto the AA4VG90DA2D8/32R-NSF52F071KP-S unit without needing additional adapters or couplings. Such modularity and expandability make it suitable for complex hydraulic systems needing multiple pump configurations. The variety of controls available with this model provides flexibility in application use, making it adaptable to various operational demands. Finally, its swashplate design is instrumental in delivering not only high efficiency but also long service life and reduced operational costs due to minimized wear over time. Overall, Bosch Rexroth's AA4VG90DA2D8/32R-NSF52F071KP-S (R902148755) variable piston pump stands out with its advanced features designed for robust performance in demanding hydraulic applications.

Table of values

Size

28 40 56 71 90 125

Displacement
geometric, per revolution

Vg max

cm³

28 40 56 71 90 125

Nominal pressure

pnom

bar

400 400 400 400 400 400

Maximum pressure

pmax

bar

450 450 450 450 450 450

Maximum speed

at Vg max

nnom

rpm

4250 4000 3600 3300 3050 2850

Intermittent 1)

nmax

rpm

5000 5000 4500 4100 3800 3450

Flow

at Vg max and nnom

qV nom

l/min

119 160 202 234 275 356

Power

at qV nom and Δpnom 2)

P

kW

79 107 134 156 183 238

Torque

at Vg max and Δpnom

M

Nm

178 255 357 452 573 796

Weight (approx.)

m

kg

29 31 38 50 60 80
1) At Δp = 70 … 150 bar or Δp < 300 bar and t < 0.1 s
2) Δpnom = 400 bar