DBEM20-7X/200YG24-8K4M

Manufacturer: Bosch Rexroth

Material #: R901353033

Model : DBEM20-7X/200YG24-8K4M

***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 DBEM20-7X/200YG24-8K4M (R901353033) is a high-performance, pilot-operated pressure relief valve designed for hydraulic systems requiring precise pressure limitation. This valve is engineered to provide stepless control of the maximum operating pressure dependent on an electrical command value. The DBEM20-7X/200YG24-8K4M features a housing with a main spool insert, a sandwich plate valve with maximum pressure limitation, and a proportional pilot control valve. The operation of this valve is based on the pressure applied to the main spool through channel P, which also affects the spring-loaded side of the spool via control lines equipped with nozzles. The hydraulic force at the pilot poppet counters the force from the proportional solenoid. When hydraulic force surpasses solenoid force, it triggers the opening of the pilot poppet allowing oil flow into port Y and subsequently to the tank, causing a pressure drop at the main spool. Incorporated within this model is a spring-loaded pressure relief valve for protection against excessively high pressures. This safety feature ensures reliable operation by maintaining set maximum operating pressures at port P. Users can adjust preset pressures as necessary through an adjustment element, while port Y must be externally piped to an unpressurized tank. The DBEM20-7X/200YG24-8K4M supports subplate mounting and threaded connections with porting patterns conforming to ISO standards. It offers a maximum operating pressure up to bar and includes both valve and control electronics from Bosch Rexroth, although external control electronics are required as a separate order. This component series X valve is ideal for applications needing controlled system pressure limitation facilitated by a proportional solenoid for accurate performance in various hydraulic systems.

$3,056.00 USD

Availability: 10 In Stock

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Qty: Delivered as early as May 1, 2024 when ordered in

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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 External control electronics (separate order)

Function, section

Valves of type DBEM are pilot-operated pressure relief valves. 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).

Type DBEM...

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 (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 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 valve may be unloaded or the maximum pressure may be limited.

01	02	03	04		05		06	07	08	09	10	11	12	13
DBE	M			‒	7X	/			G24		K4			*

01	Proportional pressure relief valve for external control electronics	DBE
02	Maximum pressure relief function	M 1)
Size
03	Size 10	10
	Size 25	20
	Size 32	30
04	Component series	no code
04	Threaded connection	G
05	Component series 70 ... 79 (70 ... 79: unchanged installation and connection dimensions)	7X
Pressure rating
06	Up to 50 bar	50
	Up to 100 bar	100
	Up to 200 bar	200
	Up to 315 bar	315
	Up to 350 bar	350
07	Pilot oil return, external	Y
07	Bleed port X, external pilot oil return	XY
08	Direct voltage 24 V	G24
09	1600 mA coil	no code
09	800 mA coil (only possible for DBET-6X (external control electronics)	-8 2)
Electrical connection
10	Without mating connector; connector DIN EN 175301-803	K4 3)
Seal material
11	NBR seals	M
	FKM seals	V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
12	Pipe thread according to ISO 228/1	no code 4)
12	UNF thread according to ASME B1.1	/12 4)
13	Further details in the plain text	*
1)	The maximum pressure limitation only serves as protection against overpressure in case of an error in the pilot valve (e. g. in case of contamination or over-current).
2)	Replacement for series 3X and series 5X SO1 (comparison see characteristic curve). All specified characteristics (hydraulic and electric) refer to the version with 1600 mA coil.
3)	Mating connectors (separate order)
4)	Only possible with version G

For applications outside these parameters, please consult us!

general

Type		DBEM	DBEMG	DBEM	DBEMG	DBEM	DBEMG
Size		10		25		32
Component series		7X
Installation position		any
Earth	kg	4.5	7	5.3	6.74	6.4	6.6
Storage temperature range	°C	-20 … +80
Ambient temperature range	°C	-20 … +70

hydraulic

Size			10	25	32
Maximum operating pressure		bar	350
	Port P	bar	350
	Port X	bar	350
	Port T	bar	315
Maximum set pressure	Pressure rating 50 bar	bar	50
	Pressure rating 100 bar	bar	100
	Pressure rating 200 bar	bar	200
	Pressure rating 315 bar	bar	315
	Pressure rating 400 bar	bar	350
Minimum set pressure			See characteristic curve
Maximum pressure relief function	Pressure rating 50 bar 1)	bar	75
	Pressure rating 100 bar	bar	135
	Pressure rating 200 bar	bar	240
	Pressure rating 315 bar	bar	350
	Pressure rating 350 bar	bar	390
Pilot oil volume range		cm³	0.4 … 1	0.4 … 1.5
Maximum flow		l/min	275	550	700
Hydraulic fluid			see table
Hydraulic fluid temperature range		°C	-20 … +80
Viscosity range		mm²/s	15 … 380
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2)			Class 20/18/15 according to ISO 4406 (c)
Hysteresis 3)		%	≤ 5
Linearity 3)		%	± 3.5
Manufacturing tolerance of the command value pressure characteristic curve, related to the hysteresis characteristic curve, pressure increasing 4)		%	± 5
Step response 5)	10% → 90%	ms	≈ 100
	90% → 10%	ms	≈ 100

1)	set at the factory
2)	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.
3)	Of the maximum set pressure
4)	of the maximum set pressure, related to the hysteresis characteristic curve, pressure increasing
5)	measured with standing hydraulic fluid column, 0.2 liters at port A

Hydraulic fluid	Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons	HL, HLP	NBR / FKM	DIN 51524
Bio-degradable - insoluble in water	HETG	NBR / FKM	VDMA 24568
Bio-degradable - insoluble in water	HEES	FKM	VDMA 24568
Bio-degradable - soluble in water	HEPG	FKM	VDMA 24568
Flame-resistant - water-free	HFDU, HFDR	FKM	ISO 12922
Flame-resistant - containing water	HFC	NBR	ISO 12922
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.).	Flame-resistant - containing water Maximum operating pressure of 210 bar Maximum hydraulic fluid temperature 60 °C Expected life cycle as compared to HLP hydraulic oil 30% to 100%
	Bio-degradable: When using hydraulic fluids that are simultaneously zinc-solving, zinc may accumulate (700 mg zinc per pole tube).

electrical

Type				DBEM	DBEMG	DBEM	DBEMG	DBEM	DBEMG
Minimum solenoid current	with 1600 mA - coil		mA	≤ 100
	with 800 mA - coil		mA	≤ 100
Maximum solenoid current	with 1600 mA - coil			1760 mA			1760 A
	with 800 mA - coil			760 mA	840 mA		840 A
Solenoid coil resistance	Cold value at 20 °C	with 1600 mA - coil	Ω	5.5
		with 800 mA - coil	Ω	20.6
	Maximum hot value	with 1600 mA - coil	Ω	8.05
		with 800 mA - coil	Ω	33
Duty cycle			%	100

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

Pressure in port P dependent on the command value

1)	1) With valve type DBEM and 3DREM, the manufacturing tolerance at the external amplifier can be changed using the command value attenuator potentiometer "Gw”. The digital amplifier is set using the "Limit” parameter. Here, the control current according to the technical data must not be exceeded. In order to be able to adjust several valves to the same characteristic curve, do not set the pressure higher than the maximum set pressure of the pressure rating with command value 100%.

Set pressure dependent on the flow

Minimum set pressure with command value 0

1)	The characteristic curves apply for output pressure in T or Y = 0 bar in the entire flow range. Notice: To ensure the minimum set pressure is achieved, the pilot current must not exceed 100 mA.

Command value pressure characteristic curve; pressure rating 50 bar

Command value pressure characteristic curve; pressure rating 100 bar

Command value pressure characteristic curve; pressure rating 200 bar

Command value pressure characteristic curve; pressure rating 315 bar

Command value pressure characteristic curve; pressure rating 350 bar

Command value pressure characteristic curve; pressure rating 100 bar; with amplifier VT-VSPA1-1

Pressure dependent on the command value / Comparison to series 5X-6X / Pressure rating 315 bar (with amplifier VT-SSPA1-1-1X with 800 mA coil)

Type DBEM...-7X/...XY...

Type DBEM...-7X/...Y...

Connection at mating connector

Connection at connector

DBEM(E) 10

Dimensions in mm

1	Seal rings for ports P and T
2	Seal ring for port X
3	Space required to remove the mating connector
4	Name plate
5	Locating pin
6	Maximum pressure relief function
7	External pilot oil return, separate and depressurized to the tank
8	Mating connector for type DBEM
9	Integrated electronics (OBE)
10	Mating connector for type DBEME
11	Cable fastening

DBEM(E) 10G

Dimensions in mm

1	Space required to remove the mating connector
2	Name plate
3	Maximum pressure relief function
4	External pilot oil return, separate and depressurized to the tank
5	Mating connector for type DBEM
6	Integrated electronics (OBE)
7	Mating connector for type DBEME
8	Cable fastening

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M12 x 50 - 10.9-flZn-240h-L

Tightening torque MA = 75 Nm ± 10%; material no. R913000283

DBEM(E) 20

Dimensions in mm

1	Seal rings for ports P and T
2	Seal ring for port X
3	Space required to remove the mating connector
4	Name plate
5	Locating pin
6	Maximum pressure relief function
7	External pilot oil return, separate and depressurized to the tank
8	Mating connector for type DBEM
9	Integrated electronics (OBE)
10	Mating connector for type DBEME
11	Cable fastening

DBEM(E) 20G

Dimensions in mm

1	Space required to remove the mating connector
2	Name plate
3	Maximum pressure relief function
4	External pilot oil return, separate and depressurized to the tank
5	Mating connector for type DBEM
6	Integrated electronics (OBE)
7	Mating connector for type DBEME
8	Cable fastening

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M16 x 50 - 10.9-flZn-240h-L

Tightening torque MA = 185 Nm ± 10%; material no. R913000378

DBEM(E) 30

Dimensions in mm

1	Seal rings for ports P and T
2	Seal ring for port X
3	Space required to remove the mating connector
4	Name plate
5	Locating pin
6	Maximum pressure relief function
7	External pilot oil return, separate and depressurized to the tank
8	Mating connector for type DBEM
9	Integrated electronics (OBE)
10	Mating connector for type DBEME
11	Cable fastening

DBEM(E) 30G

Dimensions in mm

1	Space required to remove the mating connector
2	Name plate
3	Maximum pressure relief function
4	External pilot oil return, separate and depressurized to the tank
5	Mating connector for type DBEM
6	Integrated electronics (OBE)
7	Mating connector for type DBEME
8	Cable fastening

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M18 x 50 - 10.9-flZn-240h-L

Tightening torque MA = 248 Nm ± 10%; material no. R913031952

Spare parts & repair

DBEM20-7X/200YG24-8K4M

Manufacturer: Bosch Rexroth

Material #: R901353033

Model : DBEM20-7X/200YG24-8K4M

Availability: 10 In Stock

This product is eligible for factory repair.

Function, section

Type DBEM...

general

hydraulic

electrical

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

Pressure in port P dependent on the command value

Set pressure dependent on the flow

Set pressure dependent on the flow

Minimum set pressure with command value 0

Command value pressure characteristic curve; pressure rating 50 bar

Command value pressure characteristic curve; pressure rating 100 bar

Command value pressure characteristic curve; pressure rating 200 bar

Command value pressure characteristic curve; pressure rating 315 bar

Command value pressure characteristic curve; pressure rating 350 bar

Command value pressure characteristic curve; pressure rating 100 bar; with amplifier VT-VSPA1-1

Pressure dependent on the command value / Comparison to series 5X-6X / Pressure rating 315 bar (with amplifier VT-SSPA1-1-1X with 800 mA coil)

Type DBEM...-7X/...XY...

Type DBEM...-7X/...Y...

Connection at mating connector

Connection at connector

DBEM(E) 10

DBEM(E) 10G

Recommended valve mounting screws (separate order):

DBEM(E) 20

DBEM(E) 20G

Recommended valve mounting screws (separate order):

DBEM(E) 30

DBEM(E) 30G

Recommended valve mounting screws (separate order):

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