PROPORTIONAL PRESSURE RELIEF VALVE KBPSR8BA/HCG24K4V

Manufacturer: Bosch Rexroth

Material #: R901018597

Model : KBPSR8BA/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 KBPSR8BA/HCG24K4V (R901018597) is a high-quality screw-in cartridge valve designed for precise pressure control in hydraulic systems. This direct-acting, proportional pressure relief valve features a decreasing characteristic curve and is part of the KBPS product family. It offers an electroproportional type of actuation with an integrated coil, ensuring responsive and accurate performance. Capable of handling a maximum operating pressure of 350 bar (5076 psi) and a nominal flow rate, the valve operates efficiently within its specified limits. Its SUN TA cavity design allows for compatibility with standard cavities, facilitating ease of installation and maintenance. The DIN EN electrical connector ensures secure and reliable electrical connections for the solenoid actuator. Constructed with FKM sealing material, the KBPSR8BA/HCG24K4V valve is suitable for use with various hydraulic fluids such as HL, HLP, HEES, and HEPG, making it versatile for different hydraulic applications. The poppet-type spool within this normally closed valve ensures leak-free operation when in the closed position. This Bosch Rexroth valve's design allows for fine balancing of command value/pressure characteristic curves externally via control electronics. Additionally, users can manually set the maximum pressure using the adjustment screw provided on the unit. In case of power failure or when command value input is zero, the valve defaults to its set maximum pressure limit to safeguard system integrity. Ideal for both mobile and industrial applications requiring meticulous pressure regulation, this proportional relief valve exemplifies Bosch Rexroth's commitment to precision engineering and robust design in hydraulic components.

Destination

$460.30 USD

Availability: 2 In Stock

Ships from CA

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Delivered as early as June 17, 2026

PROPORTIONAL PRESSURE RELIEF VALVE KBPSR8BA/HCG24K4V

Unpacked Weight: 0.44 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	0.44

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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