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BOSCH REXROTH
R901255657

  • BOSCH REXROTH
  • Material:R901255657
  • Model:KUDSR3CA/FN9V

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 KUDSR3CA/FN9V (R901255657) is a high-precision proportional flow control valve designed for seamless integration into hydraulic systems requiring accurate flow modulation. This direct operated screw-in cartridge valve, featuring a spool design with an integrated pressure compensator, ensures that flow is continuously adjusted in proportion to the input signal. The valve's sophisticated structure comprises a robust housing, a responsive control spool, and a control spring, along with a pressure compensator piston, orifice bush, and pressure compensator spring. It is actuated by a proportional solenoid equipped with a central thread and detachable coil for easy maintenance and flexibility. With the ability to mount in a RUNF cavity, the KUDSR3CA/FN9V valve provides precise flow control in various applications. Its solenoid coil can be rotated for convenience during installation or system reconfiguration. Additionally, it offers the option of concealed manual override functionality for emergency or maintenance operations. For those requiring external access to manual override functions, there is an optional screwable star handle that can be installed. This Bosch Rexroth model is recognized for its robustness and reliability under maximum operating pressures and can handle significant flow rates efficiently. Its design ensures that any surplus residual flow is directed appropriately to the tank or another actuator via the port, maintaining optimal system performance without compromising on safety or efficiency. The KUDSR3CA/FN9V represents Bosch Rexroth's commitment to quality in hydraulic components, offering precise flow control solutions suitable for advanced hydraulic systems where accuracy and consistency are paramount.

The proportional flow control valve is a direct operated screw-in cartridge valve in spool design with integrated pressure compensator. It controls the flow continuously proportional to the input signal. Any excessive residual flow is led to the tank or to another actuator via the port.

The valve basically consists of housing, control spool, control spring, pressure compensator piston, orifice bush, pressure compensator spring as well as proportional solenoid with central thread and detachable coil.

01

02

03

04

05

06

07

08

09

KUDS

R

3

A

/

F

V

*

01

Proportional flow control valve, with integrated pressure compensator, direct operated

KUDS

02

Maximum operating pressure 350 bar

R

03

Size 3

3

04

Symbols; for the possible version, see "Symbols/Circuit diagrams"

C, C1, C2

05

Component series

A

06

High Performance and mounting cavity R/UNF-16-03-0-06 (see mounting cavity)

F

07

With concealed manual override

N9

Screwable manual override with star handle (separate order)

N14

Seal material

08

FKM seals

V

09

Further details in the plain text

*

For applications outside these parameters, please consult us!

general

Type

KUDSR

Size

3

Component series

A

Installation position

any - if it is ensured that no air can collect upstream of the valve. Otherwise, we recommend suspended installation of the valve.

Weight

kg

0.97

Storage temperature range

°C

-20 … +80

Ambient temperature range

°C

-40 … +120

hydraulic

Type

KUDSR

Size

3

Maximum operating pressure

bar

350

Maximum flow

l/min

120

Hydraulic fluid temperature range

°C

-40 … +100

Viscosity range

mm²/s

5 … 400

Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)

Class 20/18/15 according to ISO 4406 (c)

Hysteresis

%

≤ 5

Response sensitivity

%

≤ 1

Range of inversion

%

≤ 2
1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.