Overview

This document provides comprehensive technical specifications, application guidelines, and operational details for a wide range of magnetic holders and chucks used in industrial automation, machining, and manufacturing processes. It covers permanent magnetic chucks, permanent electromagnetic chucks, electromagnetic holders, hybrid holders, and specialized magnetic holders, along with their controllers and rectifiers.

1. Types of Magnetic Holders and Chucks

• Permanent Magnetic Chucks: Hold workpieces without power supply, relying on permanent magnets.
• Permanent Electromagnetic Chucks: Combine permanent magnets with electromagnetic control for enhanced and controllable holding force.
• Electromagnetic Holders (KE Series): Models KE-B, KE-D/E, KE-R allow remote electrical control of magnetic force, suitable for automation and robotics.
• Hybrid Holders (KE-HA Series): Designed for high-speed robotic handling with low residual magnetism and low power consumption.
• Specialized Magnetic Holders: Include plate type (KE-K), V type (KE-V), stick type (KE-M), and small magnetic holders (KM series) tailored for specific industrial applications such as lifting irregular shapes, transporting bars/pipes, and holding jigs or patterns.

2. Product Specifications and Performance

• Electromagnetic Holders (KE Series): Holding power ranges from 8N (0.8kgf) to 3300N (330kgf), with dimensions and mounting features specified. Voltage requirements vary from 6VDC to 90VDC, current from 0.04A to 0.35A. Continuous operation supported with 100% duty cycle. Special durable cables used except for smallest models.
• KE-D/E and KE-R Series: Designed for thin, small applications like robotic hands; holding power from 5N to 880N. Features include spring pressure for quick release and electrical on/off control.
• Specialized Holders: KE-K plate type (up to 260N), KE-V V type (up to 1000N), KE-M stick type (up to 250N) designed for narrow spaces, round bars, and irregular shapes respectively.
• Permanent Magnetic Holders (KEP Series): Operate with electric control to switch magnetic force on/off; residual magnetism causes slight holding after power off; holding power from 150N to 1470N.
• Hybrid Holders (KE-HA Series): Enable rapid release cycles (5-6 per second), low residual magnetism, and low power consumption; holding power from 50N to 1800N.
• Small Magnetic Holders (KM Series): Range from 1.8N to 500N holding power, various sizes and surface treatments, some heat resistant up to 350°C, suitable for holding drawings, jigs, and light parts.

3. Electrical and Mechanical Details

• Power cords typically 0.3m; some models have shorter leads.
• Dedicated rectifiers and controllers (RH-M, KR-T, KR-H series) convert AC to DC and control magnetization; selection depends on holder model and application.
• Mounting and turn-stop holes dimensioned for secure installation; some models allow machining of tapped holes or prepared holes on back side.
• Continuous duty cycle (100% ED) supported for most models; some exceptions apply.
• Special cables enhance durability against bending and vibration, critical for automated and robotic environments.

4. Performance Considerations and Precautions

• Rust, scratches, and surface irregularities on the attractive face significantly reduce holding power; periodic maintenance and repair recommended.
• Maximum holding power values are based on ideal conditions (SS400 steel, 10mm thickness, ground surface); actual lifting capacity may be half or less due to real-world factors.
• Residual magnetism remains after power off in electromagnetic holders; use rectifiers with demagnetization or automatic release functions to ensure workpiece release.
• Electromagnetic holders are generally not waterproof; waterproof versions available on request.
• Operating temperature limits: ambient below 40°C, workpiece below 50°C; consult manufacturer for higher temperature applications.
• Use of uninterruptible power supplies with rectifiers requires prior consultation.
• Holding power decreases with increasing temperature; holders classified into types A, B, and C based on temperature tolerance and power retention.

5. Applications

• Automation of press machines and shearing robots.
• Material feeding and holding in automatic presses.
• Industrial robot hands for gripping and transporting workpieces.
• Handling irregular shaped components in automotive manufacturing.
• Transportation of small bars and pipes in automated production lines.
• Fixing jigs, holding small parts, cable arrangement, provisional wiring, welding, and assembly tasks.

6. Summary of Key Parameters

7. Additional Magnetic Holders (KM Series) Specifications

8. Controllers and Rectifiers

• RH-M Series: High-speed controllers for electromagnetic holders enabling quick demagnetization and external signal control.
• KR-T Series: Standard rectifiers for electromagnetic holders with various output voltages and currents.
• KR-H Series: Rectifiers dedicated to hybrid holders, including relay contact and non-contact types for different operation frequencies.
• Multiple holders can be connected in series or parallel depending on controller and rectifier capacity.
• Shielded wiring recommended for external signals; wire length limited to 10m to avoid interference.

9. Usage Recommendations and Limitations

• Regular maintenance of attractive faces is critical to maintain holding power.
• Consider environmental factors such as temperature, vibration, and moisture; waterproof versions available on request.
• Residual magnetism may affect release of light workpieces; use nonmagnetic films or demagnetization functions as needed.
• Ensure compatibility of holders with controllers and rectifiers for safe and optimal operation.
• Heat-resistant models recommended for high-temperature applications such as welding and shipbuilding.

Conclusion

This document is a detailed technical reference for selecting, installing, and operating magnetic holders and chucks in industrial settings. It highlights critical parameters such as holding power, dimensions, electrical requirements, and environmental limitations. Proper selection of holders, controllers, and maintenance practices ensures reliable performance and safety in automation, machining, and manufacturing processes.