Product Details

For precision surface grinding, light milling, and EDM workholding that requires fast electrical control and adjustable magnetic intensity at a cost-effective price point, our Electric Magnet Chuck (Electromagnetic Chuck) provides the ideal solution. Engineered by a 30-year magnetic chuck expert and manufactured in our source factory with a fully integrated supply chain-from high-purity copper coil winding to final precision grinding-this electromagnetic workholding device delivers stable, controllable holding force when connected to a DC power supply. Designed for B2B machine shops, tool rooms, and high-precision component manufacturers, it features a matched controller with an intuitive knob for continuously adjustable magnetic force (0–100%), allowing operators to securely clamp everything from heavy steel blocks to fragile, thin-walled parts. With a built-in automatic demagnetization cycle, low thermal rise design, and a robust cast-iron body, our electric magnet chuck offers reliable, energy-efficient clamping that significantly boosts daily grinding throughput.

Technical Specifications

Parameter	Details
Product Name	Electric Magnet Chuck (Electromagnetic Workholding Chuck)
Operation Principle	Electromagnetic coil excitation (Continuous DC power required)
Input Voltage	DC 110V / 220V (Controller with transformer and rectifier included)
Magnetic Force Range	0 – 15 kg/cm² (Continuously adjustable via controller potentiometer)
Coil Material & Insulation	High-purity copper wire, Class F insulation (155°C rating)
Maximum Temperature Rise	≤ 55°C under continuous 8-hour operation (Optimized cooling design)
Demagnetization Feature	Automatic controlled demagnetization cycle (Residual magnetism ≤ 1 Gauss)
Surface Flatness Tolerance	≤ 0.005mm (Precision-ground for high-accuracy finishing)

Contact now

Key Features & Applications

Fully Adjustable Magnetic Force: The included controller allows stepless adjustment from 0 to maximum holding force, making it suitable for both heavy steel plates and thin, easily deformable workpieces requiring gentle clamping.
Instant Electrical Switching: Push-button ON/OFF control with sub-second response dramatically reduces loading and unloading times, improving machine utilization by up to 70% compared to manual clamping methods.
Built-In Demagnetization: The automatic demagnetization cycle eliminates residual magnetism on both the chuck surface and the workpiece (≤1 Gs), preventing ferrous dust contamination and ensuring accurate dimensional inspection.
Versatile Manufacturing Use: Extensively used in precision surface grinding of dies and molds, light milling of small components, EDM sinking, wire EDM cutting, and as a magnetic base for CMM and inspection setups.

Advantages

30-Year Expert & Direct Factory Pricing: As a genuine source manufacturer with complete in-house production-including coil winding, casting, and precision grinding-we deliver premium electric chucks at prices 15-20% below typical distributor levels.
High Efficiency & Low Operating Cost: The electrical control system enables rapid workpiece changeovers, significantly boosting daily output while the optimized coil design ensures minimal energy consumption and low thermal rise.
Reliable & Maintenance-Friendly: Built with a rugged cast-iron body and high-grade copper windings, this chuck offers long-term dependable service with straightforward maintenance and readily available replacement parts.
Custom Solutions Available: We offer custom sizes, special pole configurations, and tailored voltage/controller setups to perfectly match your specific machine table and production requirements.

Packaging & Shipping

Each Electric Magnet Chuck is securely packed in a custom-engineered wooden case with rust-preventive VCI coating on the precision-ground surface and high-density foam padding to protect against transit shocks. The controller unit is individually wrapped in anti-static packaging. We support sea freight, air freight, and expedited courier services (DHL/FedEx). Full export documentation, including commercial invoices, packing lists, and quality test reports, is provided with every shipment. For bulk industrial orders, we offer palletized consolidation to minimize freight costs.

After-Sales Service

We back all our electric magnet chucks with a comprehensive 2-year warranty against manufacturing defects, coil burnout, and controller malfunctions. Our dedicated technical support team offers 72-hour rapid response for any operational, electrical, or application-related queries. We also provide long-term after-sales services including controller repair, coil replacement, and surface re-grinding for our B2B bulk purchasers. Each unit comes with a complete user manual, electrical wiring diagram, and safety operation guide.

Factory Showroom

FAQ

Q: What happens to the clamping force if the power supply is interrupted?

A: Unlike permanent or electro-permanent chucks, this electric magnet chuck relies entirely on continuous power. In the event of a power outage, the magnetic field decays rapidly and the workpiece will release. We recommend using this chuck with a stable power supply and appropriate safety precautions.

Q: Does the chuck overheat during long grinding shifts?

A: Our optimized coil design limits temperature rise to ≤55°C during continuous operation. While it does generate heat (unlike permanent magnet systems), it is well within the Class F insulation rating and will not cause significant thermal expansion that compromises precision.

Q: What is the MOQ and lead time for custom-sized electric chucks?

A: Standard sizes are available with MOQ of 1 unit. For custom dimensions, pole pitches, or special voltage requirements, the MOQ is negotiable. With our full in-house coil winding and machining capabilities, we can deliver within 15-20 workdays for bulk orders.