LFA40DBEM-7X/050/12
Manufacturer: Bosch Rexroth
Material #: R978016259
Model : LFA40DBEM-7X/050/12
***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 LFA40DBEM-7X/050/12 (R978016259) is a sophisticated way cartridge valve designed for precise pressure functions in hydraulic systems. This pilot-operated valve can be utilized in either seat or spool configurations, ensuring versatility for various applications. It is engineered to fit into standardized receiving holes according to DIN ISO specifications and is securely sealed with a control cover.
This model boasts an integrated pilot control valve that allows for manual or electrically proportional pressure adjustments, making it suitable for both simple and complex hydraulic circuits. The pilot valve can be fitted directly onto the control cover or mounted separately, adhering to mounting dimensions set by DIN standards.
The LFA40DBEM-7X/050/12 excels in executing different pressure functions by combining cartridge valves with corresponding control covers. In its pressure relief function, the cartridge valve operates as a seat valve with no effective area at port B, providing a direct path for the effective pressure at port A to the spring side of the element. This setup ensures that when the set pressure is reached, the spool opens to limit the pressure at port A based on predefined characteristics.
For its pressure reducing function, this model features a spool valve design that allows free flow from port B to port A until the set pressure is met. At this point, the spool closes to reduce and maintain pressure as required.
The unit comes in various sizes and includes options for proportional valves like DBETX... with maximum pressure limitation features. With a maximum operating pressure of up to several hundred bar and availability across multiple component series (X and X), this Bosch Rexroth cartridge valve stands out for its reliability and adaptability in controlling hydraulic pressures within an extensive range of demanding applications.
$1,118.00 USD
More are expected on April 7, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 7, 2025 when ordered in
This product is eligible for factory repair.
General
2-way cartridge valves for pressure functions are pilot-operated valves in seat or spool design. The power section designed as cartridge valve (1) is installed into a receiving hole standardized according to DIN ISO 7368 and closed with a control cover (2).
The pilot control valve (4) for manual or electrically proportional pressure adjustment is integrated into the control cover (2) or is installed on the control cover (2) as pilot valve with mounting dimensions according to DIN 24 340.
By combination of cartridge valves with the control covers, different pressure functions can be realized. .
Pressure relief function
The cartridge valve (1) for the pressure relief function (type LC . DB...) is designed as seat valve without area difference (no effective area at port B). The effective pressure at port A is directed via the pilot oil supply orifice (5) to the spring side (6) of the element. Under the pressure set at the pilot control valve (4), the spool (3) is pressure-compensated and closed by the spring force.
On reaching the set pressure, the spool (3) is opened and the pressure at port A is limited according to the pressure-flow characteristics.
Pressure reducing function
Rest position open
The cartridge valve for the pressure reducing function is designed as spool valve without area difference (no effective areas at port B).
As pilot control valve, identical cover types as for the pressure relief function are applied (type LFA..DB...).
The effective pressure at port A is directed via the pilot oil supply orifice to the spring side of the spool. Under the performance limit and the pressure set at the pilot control valve, the spool is pressure-compensated and retained in open position by the spring force to enable free flow from port B to port A.
On reaching the set pressure, the spool is closed and the pressure at port A is reduced according to the pressure-flow characteristics.
|
Size |
Pilot control valve |
Proportional pressure adjustment version |
|||
|
16 to 32 |
40 to 63 |
80 and 100 |
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• |
• |
• |
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• = available |
|||||
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Proportional valves |
• |
• |
DBET-5X/... |
with maximum pressure limitation |
|
|
01 |
02 |
03 |
04 |
05 |
06 |
||
|
LFA |
DBEM |
‒ |
7X |
/ |
|
Type |
||
|
01 |
Control cover LFA |
LFA |
|
Size |
||
|
02 |
NG 16 |
16 |
|
NG 25 |
25 |
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|
NG 32 |
63 |
|
|
NG 40 |
40 |
|
|
NG 50 |
50 |
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|
NG 63 |
63 |
|
|
NG 80 |
80 |
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|
NG 100 |
100 |
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|
Version |
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|
03 |
With electrical proportional pressure adjustment, with maximum pressure limitation without electrical feedback and with maximum pressure limitation |
DBEM 1) |
|
Component series |
||
|
04 |
Component series 70 ... 79 (70 ... 79: unchanged installation and connection dimensions) 2) |
7X |
|
Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions) 3) |
6X |
|
|
Pressure rating DBmax. (observe admissible pressure of the pilot control valve) |
||
|
05 |
Set pressure up to 25 bar |
025 |
|
Set pressure up to 50 bar |
050 |
|
|
Set pressure up to 100 bar |
100 |
|
|
Set pressure up to 200 bar |
200 |
|
|
Set pressure up to 315 bar |
315 |
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|
Set pressure up to 400 bar |
400 |
|
|
Set pressure up to 420 bar 4) |
420 |
|
|
Seal material |
||
|
08 |
NBR seals |
no code |
|
FKM seals |
V |
|
| 1) For set-up of a proportional pressure relief valve without electrical feedback and with maximum pressure limitation | |
| 2) Component series 7X for sizes 16…63. | |
| 3) Component series 6X for sizes 80 and 100. | |
| 4) NG 16 ... 32 only |
General information on the ordering codes for control covers: Pilot control valves (maximum operating pressure)
|
Pilot control valve |
Control cover |
Maximum operating pressure in bar Y, T |
included in type |
separate order |
|||
|
Type |
Catalog sheet no. |
NG |
|||||
|
X |
at pressure control |
static |
|||||
|
DBD. 2 K2X/… 1) |
upon request |
16 to 32 |
420 |
depressurized (up to ≈ 2 bar) |
315 |
● |
|
|
DBD. 6 K1X/… 2) |
25 402 |
40 to 63 |
400 |
315 |
● |
||
|
DBD. 10 K1X/… 2) |
25 402 |
80, 100 |
400 |
315 |
● |
||
|
DBET-5X/.G24-1 3) |
29 165 |
16 to 32 |
350 |
100 |
● |
||
|
DBET-5X/.G24… |
29 165 |
40 |
350 |
100 |
● |
||
|
DBET-5X/.YG24-1 3) |
upon request |
50 to 100 |
350 |
100 |
● |
||
| 1) Possible pressure ratings: 25, 50, 100, 200, 315, 420 | |
| 2) Possible pressure ratings: 25, 50, 100, 200, 315, 400 | |
| 3) Possible pressure ratings: 50, 100, 200, 315, 350 1 = G 1/4 threaded port T; special cone |
Notice:
By combination of a 2-way cartridge valve with a pilot control valve, various valve functions can be realized.
In particular, the following devices come into question in porting pattern form A6 (up to NG 63) and form A10 (NG 80 to 100) DIN 24 340.
Valve mounting screws are included in the scope of delivery of the control cover.
|
Orifice symbol |
Symbol in ordering code |
|||
|
A** |
|
A** |
|
This orifice is designed as screw-type orifice. If an orifice is to be installed, the respective code letter with the orifice Ø in 1/10 mm has to be entered in the type designation. Example: A12 = Orifice with Ø1.2 mm in channel A. |
|
Ø1,2 |
|
|
This orifice is designed as bore. No specifications are made in the type designation. (Orifice Ø in mm) |
|
|
Z12 |
|
|
This orifice is designed as screw-type orifice. This is a standard orifice. No specifications are made in the type designation. (Orifice Ø in 1/10 mm) |
|
Additional preferred types and standard units are specified in the EPS (standard price list).
The control covers are equipped with standard orifice fitting – optimized in our test area. Orifice specification in the type key is not necessary. Deviating operating conditions may require respective adjustment of the orifice size. The orifices are designed as screw-type orifices.
Orifice representation in symbol
LFA..DBEM-7X/...NG 16, 25, 32
LFA..DBEM-7X/...NG 40
LFA..DBEM-7X/...NG 50, 63
LFA..DBEM-6X/...NG 80, 100
Installation bore and connection dimensions according to ISO 7368
NG16 ... 63
Dimensions in mm
|
5 |
Bore for locating pin (cover pin assembled according to DIN 24 342) |
|
6 |
Information on porting pattern NG 16: Length L1 (axis x–y bores) is 80 mm |
|
8 |
Bore for locating pin at function as main pressure relief valve (reposition cover pin for assembly accordingly) |
NG 80, 100
Dimensions in mm
|
5 |
Bore for locating pin (cover pin assembled according to DIN 24 342) |
|
Mounting screws: Hexagon socket head cap screw according to DIN 912-10.9 |
||
|
Pilot control valve Type |
Dimensions |
Tightening torque in Nm |
|
DBET … |
M5 x 30 |
8,9 |
|
Mounting screws (included in scope of delivery) |
|||
|
Hexagon socket head cap screw according to DIN 912-10.9 |
|||
|
NG |
Quantity |
Dimensions |
Tightening torque in Nm |
|
16 |
4 |
M 8 x 45 |
32 |
|
25 |
4 |
M 12 x 50 |
110 |
|
32 |
4 |
M 16 x 60 |
270 |
|
40 |
4 |
M 20 x 70 |
520 |
|
50 |
4 |
M 20 x 80 |
520 |
|
63 |
4 |
M 30 x 100 |
1800 |
|
80 |
8 |
M 24 x 120 |
900 |
|
100 |
8 |
M 30 x 120 |
1800 |
|
Thread dimensions of orifice |
|||
|
D orifices at type ..DBE.. NG 25 to 63 |
M8 x 1 conical |
||
|
Orifices for NG 80, 100 |
M8 x 1 conical (A**, B**, P**, D**) or G 1/4 (X**, F**) |
||
|
other installed orifices |
M6 conical |
||
NG 16, 25, 32
Dimensions in mm
|
1 |
Port X optionally as threaded port |
|
2 |
Port Y optionally as threaded port |
|
3 |
Locating pin |
|
4 |
Adjustment type "2" |
|
9 |
Name plate |
|
10 |
Lock nut |
|
11 |
Valve mounting screws are included in the scope of delivery of the control cover |
|
14 |
Proportional pressure relief valve type DBET-5X/…G24 (NG 40) type DBET-5X/…Y G24-1 (NG 50) 1) |
|
15 |
Pressure relief valve NG 6 (included in scope of delivery) |
|
1 |
Port X optionally as threaded port |
|
2 |
Port Y optionally as threaded port |
|
3 |
Locating pin |
|
4 |
Adjustment type "2" |
|
9 |
Name plate |
|
10 |
Lock nut |
|
11 |
Valve mounting screws are included in the scope of delivery of the control cover |
|
14 |
Proportional pressure relief valve type DBET-5X/…–1 1) |
| 1) 1 = G 1/4 threaded port T; special cone | |
| 1) 1 = G 1/4 threaded port T; special cone |
Dimensions in mm
|
1 |
Port X optionally as threaded port |
|
2 |
Port Y optionally as threaded port |
|
3 |
Locating pin |
|
4 |
Adjustment type "2" |
|
9 |
Name plate |
|
10 |
Lock nut |
|
11 |
Valve mounting screws are included in the scope of delivery of the control cover |
|
14 |
Proportional pressure relief valve type DBET-5X/…G24 (NG 40) type DBET-5X/…Y G24-1 (NG 50) 1) |
|
15 |
Pressure relief valve NG 6 (included in scope of delivery) |
|
1 |
Port X optionally as threaded port |
|
2 |
Port Y optionally as threaded port |
|
3 |
Locating pin |
|
4 |
Adjustment type "2" |
|
9 |
Name plate |
|
10 |
Lock nut |
|
11 |
Valve mounting screws are included in the scope of delivery of the control cover |
|
14 |
Proportional pressure relief valve type DBET-5X/…–1 1) |
| 1) 1 = G 1/4 threaded port T; special cone |
NG63
Dimensions in mm
|
1 |
Port X optionally as threaded port |
|
2 |
Port Y optionally as threaded port |
|
3 |
Locating pin |
|
4 |
Adjustment type "2" |
|
9 |
Name plate |
|
10 |
Lock nut |
|
11 |
Valve mounting screws are included in the scope of delivery of the control cover |
|
14 |
Proportional pressure relief valve type DBET-5X/…Y G24 1) |
|
15 |
Pressure relief valve NG 6 (included in scope of delivery) |
| 1) 1 = G 1/4 threaded port T; special cone |
NG 80, 100
Dimensions in mm
|
1 |
Port X optionally as threaded port |
|
2 |
Port Y optionally as threaded port |
|
3 |
Locating pin |
|
4 |
Adjustment type "2" |
|
9 |
Name plate |
|
14 |
Proportional pressure relief valve type DBET-5X/…Y G24 1) |
|
15 |
Pressure relief valve NG 6 (included in scope of delivery) |
| 1) 1 = G 1/4 threaded port T; special cone |
Notice:
The dimensions are nominal dimensions which are subject to tolerances.
|
NG |
Ø Orifice P** 1) |
Ø Orifice X** 1) |
Ø Orifice F** 1) |
Ø Orifice D** 1) |
H1 |
H2 |
H3 |
H4 |
H5 |
L1 |
L2 |
L3 |
L4 |
L5 |
L7 |
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
|
| 16 | 1 | 0.8 | 1 | 0.8 | 40 | 17 | 15 | 19 | 28 | 65 | 80 | 36.5 | 32.5 | 7 | 35 |
| 25 | 1 | 0.8 | 1 | 0.8 | 40 | 19 | 24 | 19 | 28 | 85 | 85 | 49 | 45.5 | 8 | 36 |
| 32 | 1 | 1 | 1.2 | 1 | 50 | 26 | 28 | 26 | 37 | 100 | 100 | 56.5 | 53 | 31 | 57 |
| 1) | Orifice Ø, orifice M6 conical |
|
NG |
Ø Orifice B** |
Ø Orifice P** 1) |
Ø Orifice F** 1) |
Ø Orifice D** 1) |
H1 |
H2 |
H3 |
H4 |
H5 |
▢ L1 |
L3 |
L4 |
L5 |
L7 |
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
|
| 40 | - | 1.5 | 1.2 | 1 | 60 | 20 | 32 | 27 | 40 | 125 | 69 | 76 | 43.5 | 68 |
| 50 | 0.8 1) | - | 1.5 | 2 | 68 | 19.5 | 34 | 35 | 50 | 140 | 80 | 84 | 51 | 74.5 |
| 1) | Orifice Ø, orifice M6 conical |
|
NG |
Ø Orifice B** |
Ø Orifice P** |
Ø Orifice X** |
Ø Orifice F** |
Ø Orifice D** 1) |
D2 |
H1 |
H2 |
H3 |
H4 |
▢ L1 |
L8 |
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
|
| 63 | 0.8 1) | - | - | 2 1) | 2.5 | - | 82 | 55 | 50 | 45 | 180 | - |
| 80 | 0.8 2) | 1 2) | 3 3) | 2.5 3) | - | 250 | 100 | 30 | 45 | 52 | - | 75 |
| 100 | 0.8 2) | 1 2) | 3.5 3) | 3 3) | - | 300 | 100 | 30 | 51 | 52 | - | 85 |
| 1) | Orifice Ø, orifice M6 conical |
| 2) | Orifice Ø, orifice M8 x 1 conical |
| 3) | Orifice Ø, orifice G 1/4 conical |
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