Electro-permanent

ELECTRO-PERMANENT MAGNETIC SYSTEMS

Electro-permanent magnetic systems represent one of the most advanced solutions for secure clamping of ferromagnetic components during CNC milling, precision grinding, and high-load machining operations. This technology combines the stability of permanent magnetism with electrically controlled activation, ensuring high magnetic field intensity, strong clamping force, and operational safety even in case of sudden power failure during machining.

The product range includes systems developed by LTF and RÖHM, internationally recognized manufacturers in industrial clamping technology. Integrating these systems into production departments improves dimensional accuracy, operational reliability, and process continuity compared to traditional electromagnetic chucks.

Operating Principle

Electro-permanent technology is based on the combination of two magnetic materials: a permanent magnetic material, which maintains magnetization, and a switchable magnetic material, which changes its magnetic state in response to an electrical impulse. When an impulse is applied, the magnetic poles align and generate a strong clamping force. A second impulse cancels the effect and releases the workpiece.

The key advantage is that once activated, the magnetic field is maintained without continuous power supply. Unlike traditional electromagnetic chucks, which require constant electricity to hold the workpiece, electro-permanent systems ensure intrinsic safety, eliminating the risk of workpiece release in case of power interruption while also reducing energy consumption and preventing overheating.

Electro-Permanent Magnetic Chucks for CNC Milling

ULTRA QUAD electro-permanent magnetic chucks with square poles are specifically designed for CNC machining centers and heavy-duty milling operations. The square pole configuration ensures uniform magnetic field distribution across the entire clamping surface, providing stable holding even for large or irregularly shaped workpieces. The homogeneous force distribution reduces micro-movements and vibration, improves tool life, and enhances surface finish quality.

These systems are suitable for automated production lines and can be integrated with control units for rapid activation and release, making them ideal for repetitive and controlled machining cycles.

Electro-Permanent Magnetic Chucks for Precision Grinding

In precision grinding, pole configuration and pole pitch are critical. Electro-permanent chucks with Steel-Brass pole design generate a fine and controlled magnetic field, ideal for medium-sized components requiring stable and evenly distributed clamping force.
Electro-permanent magnetic chucks with Steel-Resin pole configuration ensure consistent magnetic field distribution during continuous grinding operations, improving dimensional accuracy throughout the machining cycle.
For thin workpieces, Electro-permanent magnetic chucks with Steel-Brass-Resin pole configuration provide more delicate and uniform magnetic control, minimizing deformation risks on low-thickness components.
When maximum uniformity is required, Electro-permanent magnetic chucks with fine pole Steel-Brass-Resin configuration offer closely spaced poles that enhance clamping stability during high-precision grinding while maintaining tight tolerances and superior surface finish.

Selecting the correct electro-permanent chuck depends on technical parameters such as minimum workable thickness, workpiece dimensions, required magnetic force, and machining conditions.

Industrial Demagnetizers and Residual Magnetism Control

After clamping on electro-permanent magnetic chucks, workpieces may retain residual magnetism, particularly after grinding operations. Residual magnetism can attract metal particles, interfere with dimensional inspection, and complicate assembly processes.
For this reason, the category also includes industrial demagnetizers and magnetic field neutralizing systems. The bench demagnetizer is suitable for small and medium-sized components and operates through a decreasing alternating magnetic field. The portable demagnetizer allows localized demagnetization directly on large or installed parts. The tunnel demagnetizer is designed for serial production and automated lines, ensuring uniform residual magnetism removal before quality control or assembly stages.
Proper post-grinding demagnetization is essential in precision engineering, automotive, and mold-making industries.

Why Choose Electro-Permanent Magnetic Systems?

Compared to mechanical clamping systems and traditional electromagnets, electro-permanent magnetic chucks for milling and grinding provide superior safety, lower energy consumption, continuous holding force, and better magnetic field control. The elimination of continuous power requirements, combined with stable magnetic force and uniform field distribution, makes electro-permanent technology a strategic investment for machining centers and grinding departments focused on quality and operational reliability.

Tadaah supports customers in selecting the most suitable solution by analyzing workpiece geometry, pole configuration, magnetic intensity, and production requirements, ensuring optimized performance and maximum operational safety.