Electro-Hydraulic Solutions for Industrial Applications Worldwide

Specializing in electro-hydraulic control technology, BOKIN provides proportional valves, servo valves, hydraulic pumps, motors, controllers, and integrated hydraulic system solutions for industrial machinery and automation equipment.

Applications include injection molding, die casting, metal forming, new energy equipment, rubber and plastics machinery, and industrial automation systems.

Proportional Valve Product Portfolio

The proportional valve portfolio covers direct-operated, pilot-operated, high-response, and servo-proportional valve series designed for demanding hydraulic control applications.

Proportional Valves Overview
Model	Size	Maximum Operating Pressure (MOP)	Maximum Operating Flow (MOF)	Rated Flow	Rated Input	Dynamic Response Time(DRT)	Hysteresis (%)	Response Sensitivity(RS)	Control Electronic Components(CEC)	Power Supply	Connectors
4WRAE	6	315 bar	42 l/min	7~26 l/min (Δp=10bar)	±10V 4~20mA	<80ms	<5%	<0.5%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRAE	10	315 bar	75 l/min	30~60 l/min (Δp=10bar)	±10V 4~20mA	<240ms	<5%	<0.5%	with integrated electronics OBE	DC24V	7 pole cable socket
4WREE	6	350 bar	80 l/min	4~32 l/min (Δp=10bar)	±10V 4~20mA	< 20 ms	<0.1%	<0.05%	with integrated electronics OBE	DC24V	7 pole cable socket
4WREE	10	350 bar	180 l/min	25~75 l/min (Δp=10bar)	±10V 4~20mA	< 35 ms	<0.1%	<0.05%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRPEH	6	350 bar	40 l/min	4~40 l/min (Δp=35bar)	±10V 4~20mA	< 10 ms	≤0.1%	≤0.05%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRPEH	10	350 bar	100 l/min	50~100 l/min (Δp=35bar)	±10V 4~20mA	< 25 ms	≤0.1%	≤0.05%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRZE	10,16, 25,32	350 bar	1600 l/min	25~520 l/min (Δp=5bar)	±10V 4~20mA	80~240ms	≤6%	≤0.5%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRKE	10,16,25, 27,32,35	350 bar	4700 l/min	25~1000 l/min (Δp=5bar)	±10V 4~20mA	30~90ms	≤1%	≤0.5%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRTE	10,16,25, 27,32,35	350 bar	1000 l/min	25~1000 l/min (Δp=5bar)	±10V 4~20mA	20~80ms	≤0.1%	≤0.5%	with integrated electronics OBE	DC24V	7 pole cable socket
4WRLE	10,16,25, 27,35	350 bar	1500 l/min	60~1500 l/min (Δp=5bar)	±10V 4~20mA	25~90ms	≤0.1%	≦0.05%	with integrated electronics OBE	DC24V	7 pole cable socket

Rexroth-Compatible Proportional Valve Solutions

Designed according to internationally recognized standards, these proportional valves are compatible with mainstream Rexroth platforms in mounting dimensions, interface specifications, and application logic.

Compatible series include 4WRAE, 4WREE, 4WRPEH, 4WRKE, and 4WRLE, providing reliable solutions for equipment upgrades, spare parts replacement, and new machine development across a wide range of industrial hydraulic applications.

Complete Electro-Hydraulic Solutions

In addition to our proprietary proportional valves, we provide a complete range of electro-hydraulic products and solutions, including:

• Proportional Valves

• Servo Valves

• Axial Piston Pumps

• Internal Gear Pumps

• Hydraulic Motors

• Controllers and Amplifiers

• Sensors

• Hydraulic Manifolds

• Hydraulic System Integration Solutions

Covering major product lines within the Rexroth hydraulic platform, we help you simplify sourcing and reduce procurement complexity through one-stop electro-hydraulic solutions.

We continue to expand our electro-hydraulic product portfolio, including technologies associated with major international platforms such as Moog and Parker.

Core Strengths

✓ 20+ Years of Electro-Hydraulic Engineering Experience

✓ High Control Accuracy and Fast Dynamic Response

✓ Excellent Contamination Resistance

✓ Cost-Effective System Solutions

✓ Standard Delivery Within 15–30 Days

✓ Global Technical Support

Partner with BOKIN to Upgrade Industrial Control Performance

Whether you are planning an equipment upgrade, replacing existing hydraulic components, or developing a new electro-hydraulic system, we provide the products, engineering expertise, and technical support required for demanding industrial applications.