The MHM-25D is a pneumatic magnetic chuck manufactured by SMC for gripping and handling ferromagnetic workpieces.
It uses compressed air to drive the movement of internal magnets, achieving adsorption and release without relying on a vacuum, making it suitable for handling steel plates with holes, irregularities, or complex shapes. Its dual-action design ensures that the workpiece remains held in place by permanent magnets even if the air supply is unexpectedly cut off, enhancing safety.
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Core Features
- ✓ Magnetic Adsorption: Directly adsorbs ferromagnetic workpieces (such as steel plates) without requiring a vacuum source or a completely sealed workpiece surface.
- ✓ Safe Holding: Utilizes internal permanent magnets, maintaining adsorption force on the workpiece even during air supply interruptions, preventing it from falling.
- ✓ Dual-Action Drive: Controls the extension and retraction of the magnet via air pressure to achieve gripping and releasing actions.
- ✓ Status Detection: An automatic switch can be installed on the main body to detect the magnet's position, thus determining whether the suction cup is currently in a "gripping" or "releasing" state.
Technical Specifications
| Brand |
SMC |
| Model / Part Number |
MHM-25D |
| Cylinder Diameter |
25 mm
|
| Actuation Method |
Double-acting |
| Operating Fluid |
Air |
| Operating Pressure |
0.2 ~ 0.6 MPa |
| Guaranteed Pressure Resistance |
0.9 MPa |
| Ambient and Fluid Temperature |
-10 ~ 60℃ (non-freezing) |
| Piping Diameter |
M5 x 0.8 |
| Adhesion Force (Reference Value) |
2mm thick workpiece: 160 N; 6mm |
| thick workpiece |
200 N |
| Residual Adhesion Force |
≤ 0.3 N |
Frequently Asked Questions
Q: What kind of workpieces can this suction cup grip?
A: It is specifically designed for gripping ferromagnetic materials (such as low-carbon steel plates). Unlike vacuum suction cups that require a flat surface, its biggest advantage is its ability to reliably grip metal workpieces with holes, uneven surfaces, or complex shapes.
Q: Will the workpiece fall off if the air supply is interrupted?
A: No. Even if the air supply is cut off, the permanent magnet inside the MHM-25D will still provide attraction force, ensuring that the workpiece will not fall immediately. This is an important safety feature.
Q: Is it complicated to install the magnetic switch (automatic switch)?
A: No. SMC provides a dedicated automatic switch for the MH series to detect the position of the magnet inside the suction cup, thereby determining whether the suction cup is in an "adhesive" or "release" state, facilitating automated control.
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