Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of rexroth 4wrke directional control proportional valves in China. We warmly welcome you to wholesale bulk rexroth 4wrke directional control proportional valves for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
▔▔The Rexroth 4WRKE is a series of high-performance, pilot-operated, 2-stage proportional directional control valves featuring electrical spool position feedback and integrated On-Board Electronics (OBE).
Key Advantages
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On-Board Electronics (OBE): Eliminates the need for external amplifier cards, reducing cabinet space and simplified wiring via a standard 7-pin connector.
Closed-Loop Position Control: An integrated inductive position transducer continuously monitors the main spool's position, ensuring it remains unaffected by fluctuating flow forces.
Excellent Dynamic Response: Features low hysteresis, rapid response times, and exceptional repeatability.
Fail-Safe Centering: Equipped with heavy-duty centering springs to return the main spool to its neutral fail-safe position if power is lost.
Versatility: Designed to handle high-flow requirements with multiple pilot oil supply and drain configurations (internal or external).
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Technical Specifications
▔▔| Parameter | Specification Details |
| Valve Type | 2-Stage Proportional Directional Control Valve |
| Nominal Sizes (NG) | Sizes 10, 16, 25 (or 27), and 32 (or 35) |
| Mounting Pattern | Subplate mounting conforming to ISO 4401 |
| Maximum Operating Pressure | Up to 350 bar (5,076 PSI) |
| Maximum Flow Capacity | Up to 3,000 L/min (depending on nominal size) |
| Command Value Input Options | ±10 V (Analog Voltage) or 4 to 20 mA (Analog Current) |
| Power Supply Voltage | 24 VDC (Nominal range: 19 VDC to 36 VDC) |
| Protection Class | IP65 (with properly mounted and locked connector) |
| Operating Medium | Mineral oils (HL, HLP), organic esters (HETG), or phosphate esters (HFDR) |
| Fluid Temperature Range | –20°C to +80°C |
| Sealing Material Options | NBR (Standard Nitrile) or FKM (Viton) |
Applications
▔▔| Application Field | Role of 4WRKE Proportional Valve | Key Benefit |
| Plastic Injection Molding | Controls the clamping, injection speed, and ejector stroke profiles. | Ensures consistent part quality and reduces scrap. |
| Metal Pressing & Stamping | Drives and positions large hydraulic press rams and cushions. | High repeatability and robust control under severe pressure spikes. |
| Paper & Steel Mills | Regulates roll positioning, tensioning systems, and winders. | Resists fluid contamination and high continuous-duty cycles. |
| Civil Engineering & Infrastructure | Manages gate and lock movements on dams or heavy bridge lift mechanisms. | Smooth, low-shock transitions for large masses. |
| Die Casting Machinery | Regulates the rapid, high-volume injection of molten metals. | Rapid response times prevent air pockets in cast structures. |
Related Models
▔▔| Part Number | Model Code / Ordering Designation | Size (NG) | Spool Symbol | Rated Flow (at Δp = 5 bar/edge) | Seal Type |
| R900704234 | 4WRKE10E100L-3X/6EG24EK31/A1D3M | 10 | E (Symmetrical) | 100 L/min | NBR |
| R901164029 | 4WRKE10E100L-3X/6EG24ETK31/A1D3V | 10 | E (Symmetrical) | 100 L/min | FKM |
| R900737966 | 4WRKE10W8-100P-3X/6EG24ETK31/A1D3M | 10 | W8 (Asymmetrical) | 100 L/min | NBR |
| R900702614 | 4WRKE16E150L-3X/6EG24ETK31/A1D3M | 16 | E (Symmetrical) | 150 L/min | NBR |
| R900705058 | 4WRKE25E350L-3X/6EG24ETK31/A5D3M | 25 | E (Symmetrical) | 350 L/min | NBR |
FAQ
▔▔Q1: What is the main difference between a standard 4WRK valve and a 4WRKE valve?
A: The "E" in 4WRKE stands for integrated electronics (OBE). While the standard 4WRK valve requires an external amplifier card housed in a control cabinet, the 4WRKE contains all the necessary amplifier and control circuitry directly on the valve body. This simplifies field wiring and reduces system footprint.
Q2: How does the closed-loop spool position control benefit my system?
A: High hydraulic flow rates generate massive internal forces that can push a typical valve spool off-course, causing erratic behavior. The closed-loop control on the 4WRKE continuously measures spool position using an LVDT and instantly corrects for these flow forces, ensuring your machine moves exactly as commanded regardless of system pressure fluctuations.
Contact Us
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Request a Quote Today to ensure your hydraulic system performs at its best with genuine components from Yanhui Hydraulic.
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