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BOSCH REXROTH
R902122892

  • BOSCH REXROTH
  • Material:R902122892
  • Model:AA4VG90HD3D1/32L-NSF52F071D

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 AA4VG90HD3D1/32L-NSF52F071D (R902122892) is a highly advanced axial piston variable pump designed for hydrostatic transmissions in closed circuits. This particular model is equipped with an integrated boost pump that serves the dual purpose of providing boost and pilot oil supply, ensuring consistent and reliable operation. The pump's design allows for smooth flow direction changes as the swashplate moves through its neutral position, which is critical for applications requiring precise control over movement and speed. One of the standout features of this Bosch Rexroth pump is its high-pressure relief valves, which come with an integrated boost function. These valves are essential for protecting the hydraulic system from pressure spikes, thereby enhancing the longevity and safety of the overall system. Additionally, the pump includes an adjustable pressure cutoff as a standard feature, offering users more control over their system's maximum operating pressure. Safety is further reinforced by the inclusion of a boost pressure relief valve, which acts as another layer of protection against excessive pressure build-up. The AA4VG90HD3D1/32L-NSF52F071D also boasts a through-drive capability that allows for the mounting of additional pumps up to the same nominal size, providing flexibility in configuring complex hydraulic systems. The versatility of this model is further extended by its large variety of controls options, allowing it to be tailored to specific application requirements. Built on a robust swashplate design, this Bosch Rexroth variable pump is suitable for demanding applications that require high efficiency and precision in controlling fluid power.

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