PROPORTIONAL PRESSURE RELIEF VALVE KBPSC8BA/HCG24K4V

Manufacturer: Bosch Rexroth

Material #: R901018586

Model : KBPSC8BA/HCG24K4V

***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 KBPSC8BA/HCG24K4V (R901018586) is a screw-in cartridge valve designed for precision control in hydraulic systems. This direct-operated proportional pressure relief valve features a decreasing characteristic curve and is tailored for applications requiring electroproportional actuation. The valve operates with a maximum pressure of 350 bar (5076 psi) and can handle a maximum flow of 8 l/min (2.11 gpm). It is engineered with a SUN TA cavity and incorporates an FKM sealing material suitable for various hydraulic fluids including HL, HLP, HEES, and HEPG. The KBPSC8BA/HCG24K4V valve is part of the KBPS product family, characterized by its poppet-type spool and integrated coil within the DIN EN 175301-803 A electrical connector. The normally closed valve ensures system safety by defaulting to the maximum set pressure in case of power failure or when the command value is zero. Its direct-acting feature allows for swift response times and precise control over pressure settings. Users can adjust the system pressure seamlessly through an external fine-balancing process on the control electronics, while an adjustment screw sets the maximum pressure limit. This makes it particularly suitable for mobile and industrial applications where consistent system pressure limitation is crucial. With its compact size and component series A standardization, this model provides reliable performance in a variety of demanding environments. The combination of its technical specifications - including pilot control, electroproportional actuation, and integrated coil design - makes it an essential component for modern hydraulic systems looking to achieve accurate pressure regulation with ease.

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$470.68 USD

Availability: Backordered

Ships from CA

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Delivered as early as September 9, 2026

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PROPORTIONAL PRESSURE RELIEF VALVE KBPSC8BA/HCG24K4V

Unpacked Weight: 0.4506 kg

Cartridge valve Mounting cavity R/T-8A Direct operated proportional valve for system pressure limitation Suitable for mobile and industrial applications Actuation by proportional solenoid with central thread and detachable coil Fine-balancing of the command value/pressure characteristic curve externally on the control electronics Set to the maximum pressure via the adjustment screw In the event of a power failure, maximum set pressure becomes effective

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

Product family classification	Proportional pressure relief valve, direct operated, decreasing characteristic curve
Product family type	KBPS
Max. pressure	420
Ports number	2
Max. flow	2
Normal position	Normally closed
Spool Poppet	Poppet type
Type of connection	Screw-in cartridge valve
Direct - Pilot	Direct acting
Cavity	Sun T-8A
Nominal flow	2
Type of actuation	Electro-proportional
Coil	GP37
Coil integrated	Integrated coil
Supply voltage	24 V DC
Electrical connector	DIN EN 175301-803
Sealing material	FKM
Hydraulic fluid	HL,HLP,HEES,HEPG
Productgroup ID	9,10,11,12,13,14
Product type	KBPS
Product family	Relief
Weight	0.4506

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
08	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
11	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
Step response	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

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