Editorial Technical Reference

Magnetic Chuck

This page explains how Magnetic Chuck is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A workholding device that uses magnetic force to secure ferromagnetic workpieces during machining operations.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Magnetic Chuck

Definition
A magnetic chuck is a component used in surface grinding machines and other machining equipment to hold ferromagnetic workpieces securely during operations. It functions as a mounting platform on the machine table, using either electromagnetic coils or permanent magnets to generate a magnetic field that clamps the workpiece firmly. This ensures dimensional accuracy and surface finish quality during precision grinding. The chuck is typically made from low-carbon steel for the body, with electrical steel laminations in the core, copper windings for electromagnetic versions, and permanent magnets (neodymium or ferrite) for permanent magnetic types. Key parameters include magnetic force (100–200 N/cm²), pole pitch (1.5–3.0 mm), flatness (0.005–0.02 mm per ISO 230-1), parallelism (0.01–0.03 mm per ISO 230-1), maximum workpiece temperature (80–120 °C), operating voltage (24 V DC ±10% per IEC 61131-2 for electromagnetic types), power consumption (50–150 W), ingress protection (IP54–IP65 per IEC 60529), body material (S45C–S50C per JIS G4051), and weight (50–500 kg). These values are reference ranges and must be verified for the specific model and application. The magnetic chuck is a critical component for achieving precise machining results, but its performance depends on proper selection, installation, and maintenance. Always confirm model-specific specifications and compliance with relevant standards with the legal manufacturer or supplier before procurement or use.
Working Principle
The magnetic chuck generates a magnetic field through either electromagnetic coils or permanent magnets. When activated, the field passes through the chuck's top plate and the workpiece, creating a strong holding force. Electromagnetic chucks use an electrical current flowing through coils to generate the field, while permanent magnetic chucks use magnet assemblies that can be rotated or shifted to switch the magnetic force on and off. The holding force is determined by the magnetic flux density and the contact area between the chuck and the workpiece.
Common Materials
Low-carbon steel, Electrical steel laminations, Copper windings, Permanent magnets (neodymium or ferrite)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Magnetic Force100–200 N/cm²Higher force for heavy cutting
Pole Pitch1.5–3.0 mmFine pitch for small workpieces
Flatness0.005–0.02 mmCritical for precision grindingISO 230-1
Parallelism0.01–0.03 mmEnsures uniform clampingISO 230-1
Maximum Workpiece Temperature80–120 °CAbove this, magnetic force drops
Operating Voltage24 ±10% V DCFor electromagnetic typesIEC 61131-2
Power Consumption50–150 WFor electromagnetic types
Ingress ProtectionIP54–IP65Higher IP for coolant environmentsIEC 60529
Body MaterialS45C–S50CSteel for magnetic permeabilityJIS G4051
Weight50–500 kgDepends on size and type

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Top Plate Part
    Provides the working surface and conducts magnetic flux to the workpiece
    Material: Low-carbon steel
  • Magnetic Coils/Permanent Magnets Part
    Generates the magnetic field for workpiece holding
    Material: Copper windings or permanent magnet material
  • Base Plate Part
    Structural support and mounting interface to grinding machine table
    Material: Cast iron or steel
  • Control Switch
    Activates/deactivates the magnetic field (for electromagnetic chucks)
    Material: Plastic housing with electrical contacts

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Magnetic Chuck.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max clamping pressure: 0.5-1.5 MPa depending on magnetic circuit design
other spec: Max workpiece weight: 500-2000 kg, Magnetic holding force: 100-500 N/cm², Power consumption: 50-500 W DC
temperature: -20°C to 80°C (operating), up to 120°C intermittent
Media Compatibility
✓ Carbon steel workpieces ✓ Cast iron components ✓ Tool steel parts
Unsuitable: Non-ferrous materials (aluminum, brass, copper) or non-magnetic stainless steels
Sizing Data Required
  • Workpiece dimensions (length × width × height)
  • Required holding force (based on machining forces)
  • Workpiece material magnetic permeability

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Demagnetization
Cause: Thermal degradation from excessive heat exposure during machining or improper storage, leading to loss of magnetic flux density.
Surface damage and corrosion
Cause: Accumulation of ferrous debris, coolant ingress, or abrasive wear from workpiece contact, compromising flatness and magnetic seal integrity.
Maintenance Indicators
  • Audible humming or buzzing during operation, indicating electrical issues or loose components.
  • Visible workpiece slippage or reduced holding force, signaling demagnetization or surface contamination.
Engineering Tips
  • Implement regular demagnetization cycles and use keepers during storage to preserve magnetic properties.
  • Maintain strict cleanliness protocols, including daily debris removal and application of anti-corrosion coatings on non-working surfaces.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 1219-1:2012 (Hydraulic fluid power - General rules and safety requirements for systems and their components) ANSI B5.54-2005 (Specifications for Spindle Noses and Tool Shanks for Machine Tools) DIN 6319 (Magnetic Chucks for Machine Tools - Dimensions and Technical Delivery Conditions)

Quoted from the published standard.

Manufacturing Precision
  • Flatness: ≤0.02 mm per 100 mm length
  • Magnetic Holding Force: ±10% of rated value
Quality Inspection
  • Magnetic Flux Density Test (using Gauss meter)
  • Surface Roughness and Flatness Verification (with coordinate measuring machine)

Manufacturers of Magnetic Chuck

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Great Magtech (Xiamen) Electric Co., Ltd.
Xiamen, Fujian, CN
ISO9001 CE RoHS
Also makes: Magnetic Separator
Listed on the company's own website · profile compiled by CNFX from public sources
CPWS®-China Precision Workholding System Inc
Taiwan, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

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Frequently Asked Questions

What is a magnetic chuck used for?

A magnetic chuck is used to hold ferromagnetic workpieces securely during machining operations, such as surface grinding, to ensure accuracy and surface finish.

What are the main types of magnetic chucks?

The main types are electromagnetic chucks, which use electrical current to generate a magnetic field, and permanent magnetic chucks, which use permanent magnets that can be mechanically switched on and off.

What parameters should be checked when selecting a magnetic chuck?

Key parameters include magnetic force, pole pitch, flatness, parallelism, maximum workpiece temperature, operating voltage (for electromagnetic types), power consumption, ingress protection, body material, and weight. Verify these with the manufacturer for your specific application.

How do I verify the performance of a magnetic chuck?

Check the flatness and parallelism against ISO 230-1, and confirm the magnetic force and other specifications with the manufacturer. Ensure the chuck is properly installed and maintained.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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