BOSCH REXROTH
R901077843
$610.00 USD
- BOSCH REXROTH
- Material:R901077843
- Model:KBPST8BA/HCG12K40V
Quantity in stock: 0
The Bosch Rexroth KBPST8BA/HCG12K40V (R901077843) is a high-performance screw-in cartridge valve designed to function as a direct-operated proportional pressure relief valve with a decreasing characteristic curve. It belongs to the KBPS product family, which is recognized for its electroproportional actuation and normally closed position in normal circumstances. The valve features a maximum operating pressure of 350 bar (5076 psi) and can accommodate a maximum flow of 40 l/min (10.6 gpm), making it suitable for various hydraulic applications that require precise pressure control. This model utilizes an integrated coil with an electrical connector type Deutsch DTP, ensuring reliable electrical connections for consistent operation. The actuation is provided by an electroproportional solenoid with a central thread, allowing for the stepless setting of system pressure limits based on electric command values. In case of power loss, the valve automatically sets to the pre-determined maximum pressure, ensuring safety and preventing over-pressurization. The KBPST8BA/HCG12K40V features FKM sealing material and is compatible with hydraulic fluids such as HL, HLP, HEES, and HEPG. It has been engineered for both mobile and industrial applications where precise pressure modulation is critical. The valve's design allows for easy installation within SUN TA cavities and offers users the ability to fine-tune the command value-pressure characteristic curve externally via control electronics. With its robust construction and reliable performance under various conditions, this Bosch Rexroth proportional pressure relief valve represents a versatile solution for systems requiring accurate pressure limitation capabilities.
Unpacked Weight: 0.44 kg
Valves of type KBPS.8B are direct operated proportional pressure relief valves (pilot control valves) in seat design and are used to limit a system pressure. At command value 0 or in the event of a power failure, the maximum pressure is set. Operation by means of a proportional solenoid with central thread and detachable coil. The solenoid's interior is connected to the main port and filled with hydraulic fluid. Dependent on the electric command value, these valves can be used to steplessly set the system pressure to be limited.
| Screw-in cartridge valve |
| Maximum operating pressure 420 bar (6000 psi) |
| Maximum flow 2 l/min (0,5 gpm) |
| Cavity SUN T-8A |
| Max. pressure | 420 |
| Coil | GP37 |
| Product family classification | Proportional pressure relief valve, direct operated, decreasing characteristic curve |
| Productgroup ID | 9,10,11,12,13,14 |
| Product family type | KBPS |
| Ports number | 2 |
| Type of actuation | Electro-proportional |
| Sealing material | FKM |
| Cavity | Sun T-8A |
| Product type | KBPS |
| Electrical connector | Deutsch DT04-2P |
| Max. flow | 2 |
| Type of connection | Screw-in cartridge valve |
| Normal position | Normally closed |
| Nominal flow | 2 |
| Direct - Pilot | Direct acting |
| Product family | Relief |
| Supply voltage | 12 V DC |
| Coil integrated | Integrated coil |
| Spool Poppet | Poppet type |
| Weight | 0.44 |
| Hydraulic fluid | HL,HLP,HEES,HEPG |
|
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
|
|
KBPS |
8 |
B |
A |
/ |
H |
C |
V |
* |
|
01 |
Proportional pressure relief valve, direct operated (pilot control valve) |
KBPS |
|
Pressure rating |
||
|
02 |
Up to 30 bar |
B |
|
Up to 50 bar |
C |
|
|
Up to 100 bar |
F |
|
|
Up to 150 bar |
H |
|
|
Up to 210 bar |
L |
|
|
Up to 250 bar |
N |
|
|
Up to 315 bar |
P |
|
|
Up to 350 bar |
R |
|
|
Up to 420 bar |
T |
|
|
03 |
Component size |
8 |
|
04 |
Maximum pressure at command value = 0 |
B |
|
05 |
Component series |
A |
|
06 |
High Performance and mounting cavity R/T-8A (see mounting cavity) |
H |
|
07 |
Proportional solenoid, wet-pin |
C |
|
Power supply |
||
|
08 |
Control electronics 12 V DC |
G12 |
|
Control electronics 24 V DC |
G24 |
|
|
Electrical connection |
||
|
09 |
Without mating connector, with connector according to DIN EN 175301-803, separate order |
K4 |
|
Without mating connector, with connector DT 04 - 2PA (Deutsch plug) |
K40 |
|
|
Without mating connector, with connector AMP Junior-Timer |
C4 |
|
|
Seal material |
||
|
10 |
FKM seals |
V |
|
11 |
Standard version |
no code |
|
800 mA coil |
-8 |
|
|
12 |
Further details in the plain text |
* |
For applications outside these parameters, please consult us!
general
|
Type |
KBPS.8B | |
|
Size |
8 | |
|
Component series |
A | |
|
Weight |
kg |
0.45 |
|
Installation position |
any - if it is ensured that no air can collect upstream of the valve. Otherwise, we recommend suspended installation of the valve. | |
|
Ambient temperature range |
°C |
-20 … +120 |
electrical
|
Type |
KBPS.8B | |
|
Duty cycle |
% |
100 |
hydraulic
|
Type |
KBPS.8B | ||
|
Maximum flow |
l/min |
2 | |
|
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) 1) |
Class 20/18/15 according to ISO 4406 (c) | ||
|
Hysteresis 2) |
% |
< 4 | |
|
Range of inversion 2) |
% |
< 0.5 | |
|
Response sensitivity 2) |
% |
< 0.5 | |
|
Manufacturing tolerance of the command value pressure characteristic curve, related to 0.8 l/min; pressure increasing |
at command value 100 % 2) |
% |
< 2 |
|
Step response |
0% → 100% 3) |
ms |
70 |
|
100% → 0% 3) |
ms |
70 | |
| 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. |
| 2) | Of the maximum set pressure |
| 3) | depending on the system |