Mastermill variable electro-permanent magnetic chucks
Mastermill variable electro-permanent magnetic chucks
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Product description
Detailed description:
The Mastermill electropermanent magnetic chuck is a chuck with 50×50 mm square poles, a compact low design (only 51 mm high) and a nominal holding force of 170 N/cm2. The electromagnet has a practical offset (slot) around its entire perimeter for clamps and there is also enough space on the magnet to perform through clamping holes. The standard delivery includes magnet with a quick “bayonet” coupling connector, stop blocks on 2 sides, and with a 6 metre-long armoured cable.
Important parameters:
- Application: Milling
- Technology: Electropermanent
- Holding force: 170 N/cm2
- Min. workpiece size: 50 x 110 x 20 mm
- Poles: Square
- Regrinding limit: 6 mm
- Pole size: 50 x 50 mm
- Top plate: steel/stainless steel combination
- Guarantee: 2 years
Additional information:
Beyond the standard design, the customer can choose:
- different cable outlet location parts
- through going holes for fastening the magnet to the table
- a top plate with a corrosion resistant gaps between the poles
If you have any questions about the arrangement of the chuck or about the selection of a suitable control unit, contact us. We will be happy to advise you.
Use:
- Machining of uneven parts up to 5 sides
- Clamping of a wide range of workpiece sizes during milling
- Clamping of large forms, castings, blocks, structures, etc.during drilling operations
- Rough grinding of large parts
Scope of supply:
- Magnetic chuck
- Side stop blocks
- Armoured power supply cable
- Certificate
- Instructions for use
Parameters:
| Model | Number of poles | W (mm) | L (mm) | H (mm) | Weight (kg) |
|---|---|---|---|---|---|
| MM50300490 | 24 | 300 | 490 | 51 | 49 |
| MM50300600 | 32 | 300 | 600 | 51 | 61 |
| MM50300800 | 40 | 300 | 800 | 51 | 82 |
| MM50300900 | 48 | 300 | 900 | 51 | 92 |
| MM50420490 | 36 | 420 | 490 | 51 | 70 |
| MM50420600 | 48 | 420 | 600 | 51 | 86 |
| MM50420800 | 60 | 420 | 800 | 51 | 114 |
| MM50420900 | 72 | 420 | 900 | 51 | 128 |
| MM50480600 | 56 | 480 | 600 | 51 | 97 |
| MM50480800 | 70 | 480 | 800 | 51 | 130 |
| MM50480900 | 84 | 480 | 900 | 51 | 146 |
| MM50480990 | 84 | 480 | 990 | 51 | 161 |
| MM50580800 | 80 | 580 | 800 | 51 | 157 |
| MM50580900 | 96 | 580 | 900 | 51 | 177 |
| MM50850990 | 96 | 580 | 990 | 51 | 194 |
Documents for Download
Mastermill magnetic chuck for efficient and precise milling
Unique pole geometry and high clamping force
One hundred percent safety and energy savings with electro-permanent technology
Robust Walmag design and modular flexibility for CNC machines
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Walmag products are in companies such as
Why Walmag?
We've been manufacturingmagnets in Czechia since 1991
We manufactured90,000+ magnets
We service magnetsdirectly in Kroměříž
Our magnets are in morethan 61 countries worldwide
Frequently Asked Questions (FAQ)
Are your products made in the Czech Republic?
Yes, the entire process – from in-house development through design, production, to final assembly and testing – takes place directly in our plant in Kroměříž. This gives us full control over quality and allows us to flexibly tailor products to specific customer requirements.
What is the difference between permanent, electromagnetic, and electro-permanent systems?
Permanent Magnets: Operate without electricity, activated mechanically by a lever. They are safe, mobile, and maintenance-free.
Electromagnets: Generate a magnetic field using coils powered by mains electricity. They possess immense strength, can clamp uneven surfaces, and allow force regulation, but require a constant power supply and backup sources.
Electro-permanent Magnets: Combine the advantages of both systems. They only require electric current for a fraction of a second for activation (magnetization) and deactivation. During operation itself, they do not need current, making them extremely safe even in the event of a power outage and preventing overheating.
Can your lifting magnets also be used for handling materials at high temperatures?
Conventional permanent magnets lose their strength at temperatures above 80 °C. However, for operations with higher temperatures, we offer special series (e.g. HOT lifting magnets) that can safely handle materials with temperatures up to 180 °C.
Why is it necessary to use a demagnetizer after machining?
Ferromagnetic materials retain residual magnetism after being exposed to a magnetic field (e.g., when clamped onto a magnetic chuck). This causes metal chips and dust to stick to the workpiece, which can damage tools or complicate further processing (e.g., painting, welding). Demagnetizers reliably remove this residual magnetism.
Do you provide service and revisions for your products?
Yes, for all our technologies, including older BUX, Walker, and Pilana brand products, we provide complete warranty and post-warranty service, repairs, overhauls, and original spare parts. We also perform mandatory periodic certifications, inspections, and load capacity testing of lifting magnets.
Do you also offer staff training?
Yes. As part of the delivery of our magnetic applications and large systems, we provide professional operator training to ensure that working with magnets is as efficient and safe as possible.
How can I contact you if I am interested in a tailored solution?
You can contact us by e-mail at info@walmag.cz, by phone at +420 573 341 641, or directly contact our regional sales managers for the Czech Republic and abroad, whose contact details can be found in the Contact section of our website.
How is heavy goods (e.g. clamping plates) delivered?
Due to the higher weight of our products, we cooperate with specialized pallet and parcel carriers who ensure safe handling.
How is the safety of lifting magnets purchased from the e-shop guaranteed?
All lifting magnets comply with the strict ČSN EN 13155 standard and operate with a safety factor of 3+. This means that in a pull-off test (the so-called Air Gap test, which simulates a real air gap/dirt in operation), the magnet can lift more than three times its declared maximum load capacity.
Where can I find user manuals and technical documentation?
Technical sheets, catalogues, and operating instructions for individual products are available either on the product's page or upon request.