Magnetic Chuck Dramatically boost your work efficiency
Sun Ai magnetic chucks combine powerful holding force with the high rigidity needed to maintain machining accuracy, thanks to our proprietary magnetic circuit design. They handle everything from rough machining to ultra-precision finishing.
Precision Holding Technology
Mastering machining accuracy with magnetic workholding solutions
Sun Ai magnetic chucks combine powerful holding force and high rigidity through a proprietary magnetic circuit design. From rough machining to ultra-precision finishing, they provide the optimal holding environment for each workpiece and dramatically boost shop-floor productivity.
SM-H / SM-3H Series
Powerful & Durable / Ultra-Precision Models
Product Overview
A next-generation chuck for the ultimate machining accuracy, born from joint research with Iwate University. The lineup includes the powerful SM-H series and the precision SM-3H series for micro-machining in 0.001 mm units.
Features
- About 2x the magnetic force when ON, and about 1/5 the residual magnetism when OFF, versus conventional models
- Strong support for machining at 0.001 mm (micron-level) accuracy
- Latest magnetic circuit technology from joint research with Associate Professor Yoshino of Iwate University
- Compatible with automatic pallet changers such as EROWA and 3R for 24-hour unmanned operation
- Sludge and chips do not accumulate easily; easy-to-clean, maintenance-friendly design
- Overwhelming holding force that withstands heavy cutting such as milling
Standard Magnetic Chuck
Versatile, Cost-Effective Model
Product Overview
Our mainstay model, combining Japanese-brand reliability and precision. A thin profile and reasonable price with the versatility to handle a wide range of workpieces.
Features
- High machining accuracy and reliability unique to a Japanese brand
- Thin 40-50 mm profile maximizes your machine's effective working space
- Fine-pitch structure of 2 mm poles with 1 mm separators handles small to large workpieces
- Wide size range from 100x75 mm up to 750x507 mm
- Fully sealed structure delivers stable performance even in harsh environments
- Excellent cost performance helps optimize your capital investment
Magnetic Chuck with Sine Bar
Fixed Angles & Inclined Machining
Product Overview
For machining that requires precise angle setting. Integrates a sine bar mechanism with a powerful magnet.
Features
- World-class compact, lightweight design makes the most of your working envelope
- Precision sine bar with Class 1 roller center distance accuracy (within ±0.0035 mm per 50 mm)
- A magnetic circuit engineered to maintain strong holding force even when inclined
- A rich lineup of variations including the SM-0710-SIN-MH
- Mountable on automatic pallet-changing systems such as 3R and EROWA
Pallet-Type Magnetic Chuck
Automation-Ready System Integration
Product Overview
Designed for seamless integration with automation systems. Ideal for multi-axis machines and pallet changers.
Features
- Dramatically streamlines workpiece loading and unloading, greatly cutting setup time
- Handles precision pallet changes requiring 1/1000 mm repeatability
- Slim design avoids interference even in the tight spaces of multi-axis and 5-axis machines
- Highly reliable sealing keeps coolant out even in harsh flood-coolant environments
- Durability and maintainability that support 24-hour operation on automated lines
Circular Magnetic Chuck
For Turning & Cylindrical Grinding
Product Overview
For cylindrical grinding and lathe work. Uniform holding force minimizes workpiece deformation.
Features
- The ultimate circular holding surface, engineered toward zero error in squareness, roundness and flatness
- Holds thin workpieces that scroll chucks would distort, without any deformation
- Lineup includes the SM-S series for general grinding and the high-power SM-SH hyper model
- Interfaces for major pallet systems such as EROWA and GFMS
- Choose from φ125 mm to over φ202 mm to match your workpiece size
▶ Circular Magnetic Chuck in actual use.
Magnetic Chuck for Carbide
For Difficult-to-Cut, Weakly Magnetic Materials
Product Overview
Firmly holds even carbide alloys that respond poorly to magnetism. A special-purpose model with a special magnetic circuit.
Features
- Stably holds carbide (weakly magnetic) materials that conventional magnets struggle with
- Special pole layout and high-density magnetic field improve machining accuracy of difficult materials
- SM-C series for carbide and the more powerful SM-UC series for ultra-hard carbide
- High-rigidity, tightly sealed body that keeps out fine powder and sludge
- Supports strict quality control in EDM and precision grinding
Air-Operated Magnetic Chuck
Instant Clamping, Clean Operation
Product Overview
Magnetic force controlled by air pressure. Combines rapid workpiece changes with secure holding.
Features
- Switches magnetism ON/OFF in under one second using only an air supply
- Uses no electricity at all - no thermal displacement, ideal for explosion-proof and waterproof environments
- SWL-H190 / H100 series clamping fixtures for small-hole EDM machines
- Flexible fine positioning: tilt, lean and angle adjustment
- Contributes to fully automated lines when combined with automatic pallet changers
▶ Air-Operated Magnetic Chuck in actual use.
Ultra-Compact High-Power Magnetic Chuck
For Micro-Machining & Small Parts
Product Overview
A high-density pole model specialized for holding tiny workpieces. Also suited to precision work under a microscope.
Features
- Palm-sized ultra-compact body that still delivers secure holding force
- Suppresses magnetic penetration through thin workpieces, minimizing effects on the back side
- Maintains high parallelism and squareness for ultra-precision finishing
- Stainless steel housing for excellent corrosion resistance and a clean exterior
- Precise ultra-fine pole pitch stably holds workpieces of just a few millimeters
- Simple, highly rigid structure that is easy to build into fixtures
▶ Ultra-Compact High-Power Magnetic Chuck in actual use.