BOSCH REXROTH
R900766025
$55,692.00 USD
- BOSCH REXROTH
- Material:R900766025
- Model:SFS250A0-1-4X/
Due to extremely high demand, please call 920-337-0234 for availability
The Bosch Rexroth SFS250A0-1-4X (R900766025) is a hydraulically actuated industrial hydraulic valve designed for high-performance applications. This seat valve, with a pilot-operated spool symbol A B, ensures reliable blocking of the oil flow at selected ports, contributing to the efficient control of hydraulic systems. It is capable of handling a maximum pressure as specified in its product group ID, and it features multiple ports for flexible system integration. The SFS250A0-1-4X valve offers hydraulic actuation and is distinguished by its size and max flow characteristics, which are suitable for various operational demands. The type of connection provided by this model is a flange connection, which facilitates secure attachment to hydraulic circuits. It follows the PN standard according to EN for flange types, ensuring compatibility and standardization across different systems. This model also boasts a number of switching positions and comes with NBR seals that are compatible with a range of hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC. The control port X can be either open or closed depending on system requirements. One notable feature of the Bosch Rexroth SFS250A0-1-4X valve is its reduced switching noises due to end position cushioning effective on both sides. This design element not only minimizes acoustic disturbances but also contributes to the longevity of the valve by reducing mechanical stress during operation. Additionally, optimized switching time characteristics enhance the performance and responsiveness of this component within hydraulic systems. Overall, the Bosch Rexroth SFS250A0-1-4X hydraulically active switching prefill valve check valve is engineered for robustness and reliability in demanding industrial settings where precise fluid control is paramount. Its specific design attributes make it an essential part of sophisticated hydraulic solutions.
Size 250, A → B, hydraulically actuated
Industrial hydraulic valve in a high performance range. Reliable blocking of the oil flow at selected ports.
Unpacked Weight: 386 kg
Control port X: "Open" control port X1: "Close"
| Seat valve |
| Pilot-operated |
| Component series 4X |
| Maximum flow 14000 l/min |
| Size 200 … 300 |
| Maximum operating pressure 350 bar |
| Data Sheet | Download Data Sheet |
| 3D CAD | Download 3D CAD |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Spool symbol | A → B |
| Max. pressure | 350 |
| Productgroup ID | 9,10,11,12,13,14 |
| Number of ports | 2 |
| Type of actuation | with hydraulic actuation |
| Size | 250 |
| Max. flow | 10000 |
| Type of connection | Flange connection |
| Connection diagram | Flange type 11 PN 16 according to EN 1092-1 |
| Number of switching positions | 2 |
| Weight | 386 |
| Seals | NBR |
| Hydraulic fluid | HL,HLP,HLPD,HVLP,HVLPD,HFC |
|
01 |
Prefill valves |
SFS |
|
02 |
Size |
200 |
|
250 |
||
|
300 |
||
|
03 |
Flange connection |
A |
|
04 |
without pre-decompression |
0 |
|
05 |
Main spool actively controllable |
1 |
|
06 |
Component series 40 to 49 (40 to 49: unchanged installation and connection dimensions) |
4X |
|
Seal material |
||
|
08 |
NBR seals |
no code |
|
Observe compatibility of seals with hydraulic fluid used. |
||
|
09 |
Further details in the plain text |
* |
|
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
|||
|
SFS |
A |
0 |
– |
1 |
– |
4X |
/ |
* |
general
|
Size |
200 | 250 | 300 | |
|
Weight |
kg |
190 | 380 | 655 |
|
Installation position |
any | |||
|
NG |
Maximum switching time in ms 1) |
|
|
Close |
Open |
|
|
ms |
ms |
|
| 200 | 60 | 70 |
| 250 | 70 | 80 |
| 300 | 110 | 90 |
| 1) | At X, X1 = 150 bar. The switching time depends on the line resistance, control valve and pilot flow. |
hydraulic
|
Size |
200 | 250 | 300 | ||
|
Maximum operating pressure |
Anschluss A |
bar |
16 | ||
|
Port B |
bar |
350 | |||
|
Anschluss X |
bar |
150 | |||
|
Anschluss X1 |
bar |
150 | |||
|
Maximum flow |
Case of application 1 |
l/min |
5600 | 10000 | 14000 |
|
Case of application 2 |
l/min |
4340 | 6775 | 9750 | |
|
Case of application 3 |
l/min |
3770 | 5890 | 8480 | |
|
Case of application 4 |
l/min |
1510 | 2360 | 3400 | |
|
Druckflüssigkeit |
Mineral oil (HL, HLP) to DIN 51524;fast bio-degradable hydraulic fluids according to VDMA 24568; HETG (rape seed oil); other hydraulic fluids on enquiry | ||||
|
Hydraulic fluid temperature range |
°C |
-30 … +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. |
Flow ‒ case of application 1 (A to B)
Flow ‒ case of application 2 (A to B)
Size of the filling tank at least 1.5 x cylinder content
Flow ‒ case of application 3 (A to B)
Flow ‒ case of application 4 (A to B)
Information on case of application 1 to 4
For limit areas, please contact us. It is often enough, to select a pipeline which is one size larger.
Attention!
An underdimensioned prefill valve and/or an underdimensioned line leads to gas leaks from the hydraulic fluid with corresponding consequences and often to long-term damage at the cylinder seals.
|
1 |
Cylinders |
|
2 |
Prefill valve |
|
a |
min. 300 mm with extended cylinder |
|
b |
up to 1000 mm with the specified maximum flows |
|
c |
≤ 500 mm |
|
h |
300 mm ≤ h < 500 mm |
For applications outside these parameters, please consult us!
Dimensions in mm
|
1 |
Housing installation continuously rotatable by 360° |
|
2 |
Flange according to EN 1092-1/11.../PN16 |
|
3 |
Name plate |
|
T2 |
Depth of fit |
|
N2 |
Number of the valve mounting screws evenly arranged at the circumference (separate order) The following valve mounting screws are recommended: Hexagon socket head cap screws ISO 21269 - 10.9 friction coefficient μtotal = 0.12 to 0.17 |
Number of the valve mounting screws evenly arranged at the circumference (separate order)
The following valve mounting screws are recommended:
Hexagon socket head cap screws ISO 21269 - 10.9
friction coefficient μtotal = 0.12 to 0.17
|
NG |
Dimensions in mm |
Tightening torqueMA in Nm |
|
200 |
M36 x 3 x 150 |
3100 |
|
250 |
M42 x 3 x 180 |
5100 |
|
300 |
M42 x 3 x 220 |
5100 |
|
NG |
B1 |
B2 |
B3 |
B4 |
ØD1 |
ØD2 |
ØD3 |
ØD4 |
ØD5 |
ØD6 |
ØD7 |
D8 |
D9 |
ØD10 |
ØD11 |
ØD12 |
ØD13 |
ØD14 |
ØD15 |
H1 |
H2 |
H3 |
H4 |
H5 |
N1 |
N2 |
T1 |
T2 |
T3 |
T4 |
R1 |
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
||||
| 200 | 275 | 24 | 3 | 60 | 168 | 273 | 268 | 340 | 295 | 22 | 40 | G1 1/4 | 350 | 420 | 290 | 350 | M36 x 3 | 270 | 445 | 180 | 255 | 35 | 100 | 12 | 15 | 37 | 26 | 5 | 50 | 3 | |
| 250 | 330 | 26 | 3 | 80 | 225 | 356 | 320 | 405 | 355 | 26 | 46 | G1 1/2 | G1 1/4 | 445 | 530 | 380 | 445 | M42 x 3 | 355 | 571 | 240 | 320 | 55 | 120 | 12 | 18 | 57 | 42 | 8 | 60 | 5 |
| 300 | 380 | 28 | 4 | 94 | 250 | 419 | 378 | 460 | 410 | 26 | 46 | G1 1/2 | G1 1/4 | 525 | 610 | 450 | 525 | M42 x 3 | 425 | 684 | 305 | 390 | 55 | 160 | 12 | 24 | 57 | 42 | 8 | 75 | 5 |
Poppet geometry and determination of the minimum pilot pressure
|
A1 |
Effective area of the main poppet |
|
A2 |
Effective area of the control spool "closing" |
|
A3 |
Effective area of the control spool "opening" |
|
s |
Piston stroke |
|
V1 |
Pilot volume for opening the valve |
|
V2 |
Pilot volume for closing the valve |
|
pSt |
Pilot pressure at port X |
|
pB |
Operating pressure at port B |
|
|
NG |
A1 |
A2 |
A3 |
s |
V1 |
V2 |
Unchecking ratio |
|
cm² |
cm² |
cm² |
mm |
cm³ |
cm³ |
||
| 200 | 216.4 | 36.4 | 50.3 | 42 | 211 | 153 | 4.3 |
| 250 | 373.3 | 67.4 | 95 | 52.5 | 503.7 | 353.8 | 3.9 |
| 300 | 572.6 | 92.86 | 143.1 | 63 | 901.8 | 585 | 4 |
Example: Type SFS 200 A0...
pB = 30 bar;
pSt = 4.3 x 30 bar = 129 bar