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BOSCH REXROTH
R900433346


$693.75 USD
  • BOSCH REXROTH
  • Material:R900433346
  • Model:DR6DP2-5X/75YM/12

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.
***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 DR6DP2-5X/75YM/12 (R900433346) is a direct operated pressure reducing valve, designed to regulate system pressure by limiting the pressure in a secondary circuit. This valve achieves precise control of the secondary pressure through an adjustable compression spring mechanism. In its default state, the valve allows unrestricted flow from channel P to channel A, with the secondary pressure being controlled via the piston area that is counteracted by the compression spring. The DR6DP2-5X/75YM/12 model maintains constant secondary pressure levels by shifting its control spool to respond to changes in pressure, ensuring stable operation even when external forces affect system dynamics. The valve features an internal signal and pilot oil flow from channel A through a control line, which helps in managing the spool movement against the spring tension. This model is designed for subplate mounting and conforms to DIN form A and ISO standards for porting patterns, providing versatility for various hydraulic applications. The valve also offers optional adjustment types including a rotary knob, threaded pin with hexagon and protective cap, lockable rotary knob with scale, or a rotary knob with scale for user-friendly operation. Additionally, it includes options for integrating a check valve for free flow back from channel A to channel P. The leakage oil from the spring chamber is directed externally via channel TY. The unit also comes equipped with a pressure gauge connection for monitoring secondary pressure levels. With its robust design, the Bosch Rexroth DR6DP2-5X/75YM/12 valve supports maximum operating pressures and flow rates that meet stringent performance requirements while ensuring reliability and efficiency in hydraulic systems where precise pressure reduction is critical.

The valve type DR 6 DP is a direct operated pressure reducing valve in 3-way version, i. e. with pressure limitation of the secondary circuit.

It is used to limit a system pressure. The secondary pressure is set via the adjustment type (4)

The valve is open in initial position. Hydraulic fluid can flow from channel P to channel A without restrictions. The pressure in channel A is simultaneously applied via the control line (6) at the piston area opposite the compression spring (3). If the pressure in channel A exceeds the value set at the compression spring (3), the control spool (2) moves to control position and keeps the set pressure in channel A at a constant level.

Signal and pilot oil come internally via the control line (6) from channel A.

If the pressure in channel A increases further due to an external force effect at the actuator, it pushes the control spool (2) even further against the compression spring (3).

In this way, channel A is connected to channel T(Y) via the control edge (8) at the control spool (2). So much hydraulic fluid is discharged into the tank that the pressure can only increase slightly.

The leakage oil discharge from the spring chamber (7) is always effected externally via channel T(Y).

For the free flow back from channel A to channel P, a check valve (5) can optionally be installed.

A pressure gauge connection (1) allows for the control of the secondary pressure.

Type DR 6 DP1-5X/.Y…

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

01

02

03

04

05

06

07

08

09

DR6DP

–

5X

/

Y

*

01

Pressure reducing valve, direct operated, size 6

DR 6 DP

Adjustment type

02

Rotary knob

1

Grub screw with hexagon and protective cap

2

Lockable rotary knob with scale

31)

Rotary knob with scale

7

03

Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions)

5X

04

Maximum secondary pressure 25 bar

25

Maximum secondary pressure 75 bar

75

Maximum secondary pressure 150 bar

150

Maximum secondary pressure 210 bar

210

Maximum secondary pressure 315 bar

3152)

05

Internal pilot oil supply, external leakage oil discharge

Y

06

With check valve

no code

Without check valve

M

Seal material

07

NBR seals

no code

FKM seals (other seals on request) Attention! Observe compatibility of seals with the hydraulic fluid used!

V

08

Without locating hole

no code

With locating hole

/60 3)

With locating hole and locking pin ISO 8752-3x8-St

/62

09

Further details in the plain text

*

1) H-key with material no. R900008158 is included in the scope of delivery.
2) Only with adjustment type “2” and without check valve
3) Locking pin ISO 8752-3x8-St, material no. R900005694 (separate order)

Preferred types and standard units are contained in the EPS (standard price list).

general

Size

6

Installation position

any

Storage temperature range

NBR seals

°C

-30 ... +80

FKM seals

°C

-20 ... +80

Weight

kg

1.2

hydraulic

Size

6

Maximum operating pressure

Port P

bar

315

Maximum secondary pressure

Anschluss A

bar

25
75
150
210
315

Maximum counter pressure

Port T (Y)

bar

160

Maximum flow

l/min

60

Hydraulic fluid

see table

Hydraulic fluid temperature range

NBR seals

°C

-30 … +80

FKM seal

°C

-20 … +80

Viscosity range

mm²/s

10 … 800

Maximum admissible degree of contamination of the hydraulic fluid 1)

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

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP, HLPD

NBR, FKM

DIN 51524

Environmentally compatible

Insoluble in water

HETG

NBR, FKM

 

ISO 15380

HEES

FKM

Soluble in water

HEPG

FKM

 

ISO 15380

Containing water

Water-free

HFDU, HFDR

FKM

 

ISO 12922

Containing water

HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620)

 

NBR

ISO 12922

Important information on hydraulic fluids!

For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!

Flame-resistant – containing water:

Maximum operating pressure 210 bar Maximum hydraulic fluid temperature 60 °C Expected life cycle as compared to HLP hydraulic oil 30 % to 100 %

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

pA-qV characteristic curves

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

pA-qV characteristic curves

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

Notice!

The curve development is maintained if the pressure is set lower according to the pressure rating.

The characteristic curves apply to the pressure at the valve output p = 0 bar across the entire flow range.

Δp-qV characteristic curves

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

Δp-qV characteristic curves

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

1

P to A (minimum pressure differential)

2

A to T(Y) (minimum pressure differential)

3

Δp only via check valve

4

Δp via check valve and fully opened control cross-section

Version "M"

Without check valve

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

Version "no code"

With check valve

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

Dimensions in mm

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

Dimensions in mm

technical illustration-R900433346-For subplate mounting Porting pattern according to DIN 24340 form A Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale 5 pressure ratings Check valve, optional

1

Name plate

2

Adjustment type "1"

3

Adjustment type "2"

4

Adjustment type "3"

5

Adjustment type "7"

6

Space required to remove the key

7

Valve mounting bores

8

Lock nut SW24

9

Hexagon SW10

10

Identical seal rings for ports A, B, P, T (Y)

11

Pressure gauge connection G1/4; 12 mm deep; internal hexagon SW6

12

Without check valve

13

With check valve

14

Port B without function

15

Porting pattern according toISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St, material no. R900005694, separate order)

Subplates (separate order)

(without locating hole)

G 341/01 (G1/4)

G 342/01 (G3/8)

G 502/01 (G1/2)

(with locating hole)

G 341/60 (G1/4)

G 342/60 (G3/8)

G 502/60 (G1/2)

 

 

Valve mounting screws (separate order)

4 metric hexagon socket head cap screws

ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

at friction coefficient μtotal = 0.09 to 0.14,

tightening torque MA = 7 Nm] ± 10% ,

material no. R913000064

4 hexagon socket head cap screws UNC

10-24 UNC x 2” (on request)