PREFILL VALVE SF300A0-1-4X/
Manufacturer: Bosch Rexroth
Material #: R900546586
Model : SF300A0-1-4X/
***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 SF300A0-1-4X/ (R900546586) is a high-performance, pilot-operated seat valve designed for reliable blocking of oil flow at selected ports. This industrial hydraulic valve is tailored for applications requiring precise control and robustness in various hydraulic systems. It features a spool symbol A B, indicating its capability to manage the flow between these specific ports.
With a maximum pressure rating and a specified number of ports, the SF300A0-1-4X/ valve ensures efficient operation under demanding conditions. The type of actuation is hydraulic, which allows for smooth and responsive control. The flange connection type offers secure and leak-proof installation, and its conformity with ISO connection diagrams ensures compatibility with standardized systems.
This model boasts several design advantages, including a housing with a low-pressure flange that can be continuously rotated for optimal positioning. It includes a nameplate for easy identification and a control cylinder that facilitates the operation of the valve. The connections G (draining) are designed with specific tightening torque parameters to ensure proper sealing and maintenance.
The SF300A0-1-4X/ can be equipped with optional features such as inductive position switches for enhanced monitoring capabilities. Its design incorporates measures to reduce switching noises, providing quieter operation which can be crucial in noise-sensitive environments. Additionally, the valve is available in versions without position switches or with special damping measures for further customization based on application needs.
Seals made from NBR (Nitrile Butadiene Rubber) offer compatibility with various hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC types. This flexibility allows the SF300A0-1-4X/ to be integrated into diverse hydraulic circuits without concerns about fluid compatibility.
Overall, the Bosch Rexroth SF300A0-1-4X/ valve represents a versatile solution for controlling fluid flow in industrial hydraulic systems where reliability and performance are paramount.
$72,512.00 USD
More are expected on April 8, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 8, 2025 when ordered in
This product is eligible for factory repair.
Size 300, A → B, hydraulically actuated
Industrial hydraulic valve in a high performance range. Reliable blocking of the oil flow at selected ports.
Unpacked Weight: 620 kg
Pilot operated check valve, with or without pre-decompression Flange connection Tank installation Cartridge valve without control open spool (check valve) Reduced switching noises due to damping measures Rotatable low-pressure connection (housing) Inductive position switch, optional Higher operating pressures, on request
Type SF . .1-1-4X/…
Type SF . A0-1-4X/Q2G24Z
Type SF . .0-1-4X/…
Type SF . .0-1-4X/…
Type SF 500 .1-1-4X/…
|
1 |
Housing with low-pressure flange, continuously rotatable |
|
2 |
Name plate |
|
3 |
Control cylinder |
|
4 |
Connection G1 1/2 (draining); tightening torque MA = 300 Nm ±10 % |
|
5 |
Ring |
|
6 |
Mounting screws |
|
7 |
Port Y; connection flange on request |
|
8 |
Port X; connection flange on request |
|
9 N1 |
Number of the flange mounting screws evenly arranged at the circumference (type of connection "A") |
|
10 N2 |
Number of the valve mounting screws evenly arranged at the circumference |
|
11 |
Version "without position switch" |
|
12 |
Version "Q2G24Z" |
general
|
Nenngröße |
125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 | ||
|
Masse |
Version "A" |
kg |
75 | 135 | 185 | 365 | 625 | 1200 | 1580 | 3400 |
|
Version "B" |
kg |
60 | 105 | 145 | 295 | 545 | 1000 | 1400 | 3100 | |
|
Version "K" |
kg |
45 | 90 | 105 | 205 | 355 | 670 | 950 | - | |
|
Installation position |
any | |||||||||
hydraulic
|
Size |
125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 | ||
|
Maximum operating pressure |
Anschluss A |
bar |
16 | |||||||
|
Port B |
bar |
350 | ||||||||
|
Anschluss X |
bar |
350 | ||||||||
|
Port Y |
bar |
350 | ||||||||
|
Cracking pressure 1) |
bar |
≈ 0.2 | ||||||||
|
Maximum flow 2) |
Case of application 1 |
l/min |
2500 | 3900 | 5600 | 10000 | 15600 | 22480 | 30600 | 50000 |
|
Case of application 2 |
l/min |
2500 | 3900 | 5600 | 10000 | 14000 | 19050 | 24880 | 40000 | |
|
Case of application 3 |
l/min |
1700 | 2440 | 4340 | 6775 | 9750 | 13280 | 17340 | 28000 | |
|
Case of application 4 |
l/min |
1470 | 2120 | 3770 | 5890 | 8480 | 11540 | 15080 | 25000 | |
|
Case of application 5 |
l/min |
590 | 850 | 1510 | 2360 | 3400 | 4620 | 6050 | ||
|
Druckflüssigkeit |
see table | |||||||||
|
Hydraulic fluid temperature range |
°C |
-30 … +80 | ||||||||
|
Viscosity range |
mm²/s |
10 … 800 | ||||||||
|
Maximum admissible degree of contamination of the hydraulic fluid 3) |
Class 20/18/15 according to ISO 4406 (c) | |||||||||
| 1) | Pressure differential at the main poppet for overcoming the spring force |
| 2) | A to B, Δp = 0.3 bar |
| 3) | 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, HVLP |
NBR, FKM 3) |
DIN 51524 |
|
|
Bio-degradable |
Insoluble in water |
HETG |
NBR, FKM 3) |
VDMA 24568 |
|
HEES |
FKM 3) |
|||
|
Soluble in water |
HEPG |
FKM 3) |
VDMA 24568 |
|
|
Flame-resistant |
Water-free |
HFDU, HFDR |
FKM 3) |
ISO 12922 |
|
HFC |
NBR |
ISO 12922 |
||
Important information on hydraulic fluids!Flame-resistant and bio-degradable: |
||||
| 3) Upon request |
Flow ‒ case of application 1 (A to B)
Flow ‒ case of application 2 (A to B)
Flow ‒ case of application 3 (A to B)
Size of the filling tank at least 1.5 x cylinder content
Flow ‒ case of application 4 (A to B)
Flow ‒ case of application 5 (A to B)
Notice!
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.
For boundary areas, please ask us!
Information on case of application 1 to 5
For limit areas, please contact us. It is often enough, to select a pipeline which is one size larger.
|
1 |
Cylinders |
|
2 |
Prefill valve |
|
3 |
This sheet is not included in the scope of delivery. With smaller tank dimensions and minimum hydraulic fluid level (a), it prevents the formation of tunnels. |
|
a |
at least 300 mm with extended cylinder |
|
b |
up to 1000 mm with the specified maximum flows |
|
c |
h ≤ 500 mm |
|
h |
300 mm ≤ h < 500 mm |
For applications outside these parameters, please consult us!
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qv characteristic curves – NG125 … 250 (A → B)
Δp-qv characteristic curves – NG125 … 250 (A → B)
Δp-qv characteristic curves – NG125 … 250 (B → A)
Δp-qv characteristic curves – NG125 … 250 (B → A)
Version "A" and "B" (NG125 to 400)
Version "A" and "B" (NG500)
Version "K" (NG125 to 400)
Version "A", flange connection
Poppet geometry and determination of the minimum pilot pressure
Dimensions in mm
Dimensions in mm
Modification from type of connection „A“ to „B“
Loosen the mounting screws (6) Remove the ring (5) Remove the housing (1)Rotate the housing (1)
Loosen the mounting screws (6) Rotate the housing (1) Tighten the mounting screws (6)Version "B", tank installation
Modification from type of connection „B“ to type of connection „K“
Loosen the mounting screws (6) Remove the control cylinder (3)Version "A" and "B"
Version "K", cartridge valve without control spool
Dimensions in mm
| 1) | 1) Depth of fit |
Control cover with remote control port
Dimensions in mm
| 1) | 1) Depth of fit |
|
1 |
Housing with low-pressure flange, continuously rotatable |
|
2 |
Name plate |
|
3 |
Control cylinder |
|
4 |
Port G1 1/2; tightening torque MA = 300 Nm ±10 % |
|
5 |
Ring |
|
6 |
Mounting screws |
|
7 |
Port Y; connection flange on request |
|
8 |
Port X; connection flange on request |
|
9 N1 |
Number of the flange mounting screws evenly arranged at the circumference (type of connection "A") |
|
10 N2 |
Number of the valve mounting screws evenly arranged at the circumference |
|
11 |
Version "without position switch" |
|
12 |
Version "Q2G24Z" |
Dimensions in mm
| 1) | 1) Depth of fit |
Dimensions in mm
| 1) | 1) Depth of fit |
Notice!
Valve contact face (e.g. pressing cylinders, bearing structures, etc.) must be sufficiently rigid!
The prefill valve must not be loaded by bending!
Dimensions
|
NG |
B1 |
B2 |
B3 |
ØD1 |
ØD2 |
D3 |
ØD4 |
ØD5 |
ØD6 |
ØD7 |
ØD8 |
ØD9 |
ØD10 |
ØD11 |
ØD12 |
ØD13 |
ØD14 |
ØD15 |
ØD16 |
D17 1) |
ØD18 |
ØD19 |
ØD20 |
ØD21 |
H1 |
H2 |
H3 |
H4 |
H5 |
H6 |
H7 |
H8 |
H9 |
N1 |
N2 |
T1 |
T2 2) |
T3 |
T4 |
T5 |
T6 |
T7 |
T8 |
R1 |
R2 |
W1 |
|
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 |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
° |
|||
| 125 | 210 | 22 | 3 | 110 | 42 | G3/4 | 178 | 250 | 188 | 132 | 210 | 18 | 33 | 120 | 175 | 200 | 250 | 310 | 180 | M30 | 159 | 156 | 130 | 105 | 490 | 136 | 185 | 35 | 80 | 515 | 25 | 207 | 28 | 8 | 12 | 37 | 26 | 5 | 40 | 1 | 14 | 12 | 3 | 3 | 0.5 | 30 |
| 150 | 250 | 22 | 3 | 130 | 42 | G3/4 | 229 | 285 | 212 | 159 | 240 | 22 | 40 | 145 | 220 | 250 | 310 | 380 | 230 | M36 | 200 | 195 | 160 | 130 | 604 | 160 | 220 | 35 | 90 | 603 | 26 | 248 | 31 | 8 | 12 | 37 | 26 | 5 | 60 | 1 | 14 | 12 | 3 | 3 | 0.5 | 30 |
| 200 | 275 | 24 | 3 | 150 | 47 | - | 273 | 340 | 268 | 207 | 295 | 22 | 40 | 155 | 265 | 290 | 350 | 420 | 270 | M36 | 235 | 230 | 185 | 155 | 695 | 180 | 255 | 35 | 100 | 671 | 27 | 298 | 36 | 12 | 15 | 37 | 26 | 5 | 50 | 1 | 14 | 12 | 3 | 3 | 0.5 | 24 |
| 250 | 330 | 26 | 3 | 190 | 58 | G1 1/4 | 356 | 405 | 320 | 260 | 355 | 26 | 46 | 180 | 350 | 380 | 445 | 530 | 355 | M42 | 315 | 310 | 250 | 206 | 835 | 240 | 320 | 55 | 120 | 756 | 38 | 379 | 44 | 12 | 18 | 57 | 42 | 8 | 60 | 1 | 21 | 19 | 4.5 | 5 | 1.6 | 20 |
| 300 | 380 | 28 | 4 | 225 | 58 | G1 1/4 | 419 | 460 | 378 | 310 | 410 | 26 | 46 | 220 | 420 | 450 | 525 | 610 | 425 | M42 | 375 | 370 | 300 | 255 | 1085 | 305 | 390 | 55 | 160 | 935 | 38 | 442 | 59 | 12 | 24 | 57 | 42 | 8 | 75 | 1 | 21 | 19 | 4.5 | 5 | 1.6 | 15 |
| 350 | 440 | 30 | 4 | 275 | 65 | G1 1/2 | 508 | 520 | 438 | 340 | 470 | 26 | 55 | 295 | 515 | 550 | 640 | 750 | 520 | M52 | 455 | 450 | 350 | 305 | 1259 | 360 | 460 | 55 | 200 | 1045 | 50 | 500 | 60 | 16 | 24 | 57 | 42 | 8 | 80 | 1 | 30 | 27 | 8 | 5 | 1.6 | 15 |
| 400 | 530 | 32 | 4 | 320 | 65 | G1 1/2 | 572 | 580 | 490 | 390 | 525 | 30 | 68 | 345 | 600 | 625 | 720 | 850 | 605 | M64 | 530 | 525 | 400 | 355 | 1463 | 423 | 510 | 55 | 210 | 1195 | 63 | 577 | 80 | 16 | 20 | 57 | 42 | 8 | 95 | 1 | 30 | 27 | 6 | 5 | 1.6 | 18 |
| 500 | 620 | 34 | 4 | 398 | - | - | 802 | 715 | 610 | 492 | 650 | 33 | 68 | 450 | 770 | 800 | 940 | 1070 | 785 | M64 | 750 | 745 | - | - | 1750 | 700 | 600 | 55 | 250 | 1290 | 70 | 686 | 90 | 20 | 24 | 60 | 45 | 10 | 110 | 2 | - | - | - | 5 | - | 15 |
| 1) | In earlier data sheet versions, fine threads were moreover specified. Please note when selecting the mounting screws! |
| 2) | Depth of fit |
Poppet geometry and determination of the minimum pilot pressure – Version "A" and "B"
| 1) | Not applicable for version "without pre-decompression" (SF...0...) |
Poppet geometry and determination of the minimum pilot pressure – Version "K"
|
A1 |
Effective area of the main poppet |
|
A2 |
Effective area of the pilot poppet |
|
A3 |
Effective area of the control spool |
|
s1 |
Stroke of the main poppet |
|
s2 |
Stroke of the control spool |
|
F1 |
Spring force of the valve spring |
|
F2 |
Spring force of the compression spring of the control spool |
|
Vst X |
Pilot oil volume for opening the valve |
|
Vst Y |
Pilot oil volume for closing the valve |
|
pSt |
Pilot pressure at port X |
|
pB |
System pressure at port B |
|
Example: Type SF 300 ...
pB = 30 bar;
pSt = 4.0 x 30 bar = 120 bar
|
NG |
A1 |
A2 1) |
A3 |
s1 |
s2 |
F1 |
F2 |
VstX |
Vst Y |
Unchecking ratio |
|
|
cm² |
cm² |
cm² |
mm |
mm |
N |
N |
cm³ |
cm³ |
|||
| 125 | 101 | 2.5 | 24.6 | 28 | 25 | 220 … 360 | 780 … 2,340 | 62 | - | 4.1 | 0.1 |
| 150 | 153.9 | 3.8 | 38.5 | 35 | 29 | 350 … 570 | 1,530 … 3,550 | 112 | 4 | 0.1 | |
| 200 | 216.4 | 4.9 | 50.3 | 42 | 34 | 490 … 760 | 1,920 … 4,540 | 171 | 4.3 | 0.1 | |
| 250 | 373.3 | 9.6 | 95 | 53 | 41 | 870 … 1,460 | 4,160 … 7,260 | 390 | 3.9 | 0.1 | |
| 300 | 572.6 | 13.9 | 143.1 | 63 | 48 | 1,490 … 2,630 | 6,080 … 11,040 | 687 | 4 | 0.1 | |
| 350 | 826.6 | 21.2 | 213.8 | 78 | 58 | 2,180 … 3,880 | 9,490 … 15,600 | 1240 | 3.9 | 0.1 | |
| 400 | 1158 | 32.2 | 314.2 | 93 | 68 | 3,310 … 6,230 | 13,900 … 22,570 | 2136 | 3.7 | 0.1 | |
| 500 | 1948 | 49 | 490.9 | 140 | 100 | 6,520 … 13,800 | - | 4909 | 1767 | 4 | 0.1 |
| 1) | Not applicable for version "without pre-decompression" (SF...0...) |
| 2) | Without pre-decompression |
| 3) | With pre-decompression |
Related Products
R978908775
$2,430.00 USD
R978910661
$1,426.00 USD
R900402753
$1,120.00 USD
R978875071
$459.00 USD
R978027798
$662.00 USD
