EFHG-06-500-10 Tokyo Keiki Proportional Valve

Product Overview

The EFHG-06-500-10 is identified in current supply-chain records as a Tokyo Keiki / Tokimec electro-hydraulic proportional flow control valve for industrial hydraulic applications.

The commonly traded configuration EFHG-06-500-10-S2 is described as a proportional flow control valve for accurate hydraulic flow regulation and is associated with applications including injection molding and die-casting machinery.

From an engineering perspective, the purpose of a proportional flow-control valve is to continuously regulate hydraulic flow in response to an electrical command. This allows the hydraulic system to control actuator speed more progressively than a conventional fixed or simple on/off valve.

The model should not be confused with Yuken’s EFBG-06-500. Yuken officially lists EFBG as a proportional electro-hydraulic flow control and relief valve family, including a high-flow EFBG-06-500 configuration rated at 500 L/min and 24.5 MPa. Those specifications belong to Yuken and are not automatically applicable to the Tokyo Keiki EFHG model.

For replacement applications, the correct approach is to verify the complete model code, mounting configuration, hydraulic ports, electronic control method and system operating conditions before installation.

Technical Specifications

EFHG-06-500-10

• Model: EFHG-06-500-10
• Brand: Tokyo Keiki / Tokimec
• Product Type: Electro-hydraulic proportional flow control valve
• Nominal Size: 06
• Flow-Class Code: 500
• Design Code: 10
• Control: Electrical proportional control
• Function: Continuous hydraulic flow regulation
• Typical Application: Industrial hydraulic speed and flow control
• Documented Applications: Injection molding and die-casting machinery for the closely identified EFHG-06-500-10-S2 configuration.

Specifications requiring exact OEM documentation

The following values are deliberately not stated as certified specifications because I could not independently verify them from a Tokyo Keiki original document for the exact EFHG-06-500-10:

• Maximum operating pressure
• Maximum controlled flow
• Minimum controlled flow
• Rated current
• Coil resistance
• Hysteresis
• Repeatability
• Mounting interface
• Port configuration
• Overall dimensions
• Weight
• Detailed pressure-flow characteristics

Tokyo Keiki’s official hydraulic documentation confirms comparable 06-size proportional flow-control products with flow ratings reaching 500 L/min, but this should be treated as family-level reference information rather than an exact EFHG-06-500-10 specification.

Key Technical Advantages

Proportional Flow Regulation

The EFHG architecture is intended for continuous hydraulic flow regulation rather than simple binary switching. This allows engineers to control hydraulic actuator speed according to an electrical command.

High-Flow Industrial Positioning

The 06-500 configuration is positioned in a high-flow industrial class. Tokyo Keiki’s official proportional flow-control documentation includes size-06 products with flow capacity up to 500 L/min, supporting the use of this product family in high-throughput hydraulic circuits.

Improved Actuator Speed Management

Hydraulic actuator speed is fundamentally related to flow rate. Proportional flow control therefore provides a practical method for continuously adjusting cylinder or motor speed in automated industrial equipment.

Automation-System Compatibility

A proportional hydraulic valve can be integrated into an electrical control architecture using a suitable controller or proportional amplifier, making this type of valve suitable for automated hydraulic machinery.

Replacement-Oriented Design Approach

For maintenance and retrofit projects, identifying the complete Tokyo Keiki model code allows engineers to verify the mechanical and control configuration before replacing the installed valve. The EFHG-06-500-10-S2 configuration is documented in current supply-chain records as a Tokyo Keiki product.

Application Areas

Typical application areas include:

• Injection molding machines
• Die-casting machines
• Hydraulic presses
• Machine tools
• Industrial automation equipment
• Steel-processing machinery
• Hydraulic power units
• High-flow manufacturing machinery
• Hydraulic actuator speed-control circuits
• Process-control equipment

The strongest model-specific application evidence currently available is for injection molding and die-casting machinery.

Expert Maintenance Tips

Verify the Complete Part Number

Do not identify the replacement solely by EFHG-06-500-10. Market records show a commonly traded EFHG-06-500-10-S2 configuration, so the complete suffix and control configuration should be checked before ordering.

Match the Proportional Drive Electronics

A proportional valve requires compatible electronic control. Verify the original controller, amplifier, command signal and electrical interface before commissioning.

Maintain Clean Hydraulic Oil

Flush the hydraulic circuit before installation and prevent contamination from entering the valve. Proportional control elements can be sensitive to particles and contamination-induced sticking.

Commission Gradually

Start commissioning at a low command signal and progressively increase the input while monitoring system pressure, actuator speed, valve response and abnormal noise.

Do Not Substitute Yuken EFBG Specifications

Yuken officially documents EFBG-06-500 at 500 L/min maximum flow and 24.5 MPa maximum operating pressure. These values should not be copied into an EFHG-06-500-10 product page because the two models belong to different manufacturers.

Test Replacement Units Under Simulated Working Conditions

For aftermarket or interchangeable replacement units, a practical quality-control procedure is to reproduce the customer’s operating conditions and verify hydraulic response, stability, sealing performance and repeatability before shipment. This supports a 100% simulated working-condition testing strategy without making unsupported OEM performance claims.