Rexroth Proportional Servo Valves

Rexroth Proportional Valve DBEME

Rexroth Valve DBEME
Rexroth Proportional Valve DBEME
Rexroth Proportional Valve DBEME

Description

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Data Sheet of DBEME Series

REXROTH Type Code of DBEME Series

 

Rexroth Proportional Valve DBEME Description

Rexroth Proportional Pressure Relief Valves DBEME are pilot-operated pressure relief valves with integrated electronics (OBE). They are used to limit the operating pressure in hydraulic systems. These valves can be used for the stepless setting of the pressure to be limited dependent on the electrical command value. The valves basically consist of the housing (1) with main spool insert (3), the sandwich plate valve with maximum pressure limitation (2) and the proportional pilot control valve (11). On the proportional solenoid, there is moreover a housing with the control electronics (19). Supply and command value voltage are applied at the connector (20). At the factory, the command value pressure characteristic curve is adjusted with little manufacturing tolerance.

The pressure applied to channel P acts on the main spool (3). Simultaneously, the pressure at port P is applied to the spring-loaded side of the main spool (3) via the control lines (6, 7) provided with nozzles (4, 5). Via the connecting bore (9), the pressure is simultaneously applied to the

poppet (10) of the proportional pilot control valve DBEME (11). The hydraulic force at the pilot poppet (10) acts against the command value-dependent force of the proportional solenoid (12). If the hydraulic force exceeds the solenoid force, the pilot poppet is opened (10). The pilot oil can now flow via the control line (13) into port Y (14) and to the tank; thus, a pressure drop results at the main spool (3) over the control lines (6, 7). The connection from port P to T is released. The main spool (3) controls the set operating pressure at port P.

As hydraulic protection against inadmissibly high pressures, a spring-loaded pressure relief valve (2) has been integrated. This maximum pressure limitation is pre-set to the relevant pressure rating (see table page 6). In the operating range of the valve, the poppet (15) is held

on the valve seat (17) by the spring (16) and is thus closed. If the pressure in the spring chamber of the main spool (3) exceeds the maximum admissible set pressure of the Rexroth DBEME valve, the poppet (15) is pressed against the compression spring (16) and the connection into the spring chamber is opened. Via port Y (14), the pilot oil flows into the tank. Due to the control lines (6, 7), a pressure drop occurs at the main spool (3). The connection from port P to T is released. The main spool (3) controls the set maximum operating pressure in port P. Via the adjustment element (19), the pre-set pressure can be reduced, if necessary. Port Y

(14) must be externally piped to the tank. The connection to the tank should be depressurized. Via port X (18), the Rexroth valve DBEME may be unloaded or the maximum pressure may be limited.

 

HEASH B.V., provide original and new Rexroth Valve DBEME. please don't hesitate to contact with us if you demand the Rexroth valves DBEME or other valves. Heash Tech is your nice cooperation partner in all time. DBEM 10, DBEM 20, DBEM 30, DBEME 10, DBEME 20, DBEME 30. 

Rexroth DBEME Technical Data

Type

DBEME

DBEMEG

DBEME

DBEMEG

DBEME

DBEMEG

Size

10

25

32

Component series

 

7x

Installation position

 

Any

Earth

kg

4.7

7.2

5.5

6.94

6.6

Storage temperature range

°C

-20 … +80

Ambient temperature range

°C

-20 … +50

 

 

Rexroth DBEME Features

Pilot-operated valves for system pressure limitation

Controlled by proportional solenoid

For subplate mounting and threaded connection: porting pattern according to ISO 6264

Maximum pressure relief function

Valve and control electronics from a single source

Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve

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