Magnetic chuck for milling Mastermill 70

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    Magnetic chuck for milling Mastermill 70

      If you are looking for a versatile magnetic chuck for heavy duty milling and drilling of medium-sized and large workpieces, draw you attention to Mastermill 70SQ chuck. Compared to the basic Mastermill SQ series, the larger 70x70 mm magnetic poles offer higher performance in combination with pole extensions for effective claming of uneven workpieces or 5-side machining in a single setup.
      For optimum holding force, the required workpiece thickness is at least 17 mm. Thanks to the combination of steel/stainless steel materials on the top plate, this series of magnetic clamping chucks is suitable for dry or MQL machining processes.

      Do you need help?

      Marek Caletka

      Marek Caletka

      +420 734 698 768

      Send inquiry
      We'll get back to you within 24 hours
      Create inquiry

      Create inquiry

      mm70_22_mastermill_70.jpg
      Product
      Magnetic chuck for milling Mastermill 70

      How does magnet rental work?How does magnet rental work?

      We will gladly lend you the magnet for 14 days free of charge; you only pay for the shipping costs to and from your location. Please inquire about the current availability of specific dimensions in advance and send us your request via the inquiry form.

      Where can I find the product price?Where can I find the product price?

      We will be happy to prepare an exact price offer based on your non-binding inquiry. If you prefer to discuss it in person, you can also directly contact our sales representatives, whose phone numbers can be found in the Contactssection.

      Product description

      Detailed description:

      Mastermill 70SQ is an electro-permanent magnetic clamping plate with a pole size of 70 x 70 mm, a construction with a total height of 68 mm and a nominal clamping force of 170 N / cm2. Around the perimeter of the magnet is practical offset for the clamps, the magnet also has enough space for through holes.
      The standard design includes a quick „bayonet“ coupling connector, stop blocks on 2 sides and a the 6 metre-long armored power cord. All magnetic poles are provided with M8 threads for easy mounting of pole extensions.

      Important parameters:

      • Application: Milling
      • Technology: Electropermanent
      • Holding force: 170 N/cm2
      • Min. workpiece size: 150 x 150 x 17 mm
      • Poles: Square – steel/stainless steel combination for high durability and long service life
      • Regrinding limit: 6 mm
      • Pole size: 70 x 70 mm
      • Chuck height 68 mm
      • Guarantee: 2 years

      Additional information:

      Beyond the standard design, the customer can choose:
      • different cable outlet location on the magnet
      • fixed (screwed) el. outlet – the connector is moved to the control unit
      • through going holes for fastening the magnet to the table
      • centering stones and grooves on the bottom side of the body for precise installation (centering with the machine table axis)
      • multi-section chuck (possibility to devide the clamping area into several independent segments)

      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.
      • Rough grinding of large parts

      Scope of supply:

      • Magnetic chucks
      • Side stop blocks
      • Armoured power supply cord
      • Certificate
      • Operation and maintenance instructions
      Mastermill 70 drawing
      Catalog number Number of poles W (mm) L (mm) H (mm) weight (kg)
      MM70300620 18 300 620 68 86
      MM70300820 24 300 820 68 114
      MM703001020 30 300 1020 68 142
      MM70380420 16 380 420 68 74
      MM70380540 20 380 540 68 95
      MM70380620 24 380 620 68 109
      MM70380820 32 380 820 68 144
      MM703801020 40 380 1020 68 180
      MM70460540 25 460 540 68 115
      MM70460620 30 460 620 68 132
      MM70460820 40 460 820 68 175
      MM704601020 50 460 1020 68 218
      MM70580620 36 580 620 68 167
      MM70580820 48 580 820 68 221
      MM705801020 60 580 1020 68 274

      Documents for Download

      mm70_8_MM50420800_HACO_20180316 (53).jpg

      Mastermill Magnetic Chuck for Efficient and Precise Milling

      The Mastermill permanent magnetic chuck represents a top-tier solution for clamping workpieces during milling, drilling, planing, and rough grinding. This electro-permanent magnetic chuck combines immense holding power with maximum rigidity, making it an ideal partner for demanding metalworking operations. Unlike traditional mechanical vices, the Mastermill allows free access to the workpiece from up to five sides with a single clamping. This dramatically shortens setup times, eliminates the need for complex reclamping, and significantly increases the overall productivity of your CNC milling machine or machining center.

      mm70_6_MM50420600SS_Houfek_test (1).jpg

      Unique pole geometry and high clamping force

      The key to the Mastermill chuck's uncompromising performance is the square arrangement of magnetic poles, which generates a concentrated and deep magnetic field. This design ensures an even distribution of clamping force over the entire surface of the workpiece, effectively minimizing vibrations during heavy-duty machining. Thanks to the possibility of using both fixed and movable pole extensions, the Mastermill can perfectly copy any material irregularities. This allows you to clamp the workpiece without internal stress and deformation, which is crucial for achieving perfect flatness and high geometric precision of the final part.

      mm70_4_IMG_20191217_075810.jpg

      One hundred percent safety and energy savings with electro-permanent technology

      Work safety and operating economy are paramount with the Mastermill model. The chuck utilizes an electro-permanent system, meaning that electric current is only needed for a few seconds for the magnetization and demagnetization cycle. During the milling process itself, the workpiece is held purely by the force of strong permanent magnets. In the event of a sudden power outage in the network, there is absolutely no risk of the workpiece loosening or tool damage. Furthermore, the absence of a constant current supply prevents the chuck from heating up, which eliminates thermal expansion and guarantees dimensional stability during long-term machining.

      mm70_3_IMG_20191217_104725.jpg

      Robust Walmag construction and modular flexibility for CNC machines

      Mastermill magnetic chucks from the Czech manufacturer Walmag are synonymous with extreme mechanical resistance and a long service life in demanding industrial environments. Their integral and waterproof design perfectly withstands aggressive cooling emulsions and hot metal chips. Another great advantage is the modular concept – individual magnetic blocks can be easily joined together to create large clamping systems tailored precisely to your CNC machine's table. Investing in a Mastermill chuck gives you a maintenance-free and highly flexible device that will take your milling capabilities to a new level.

      Do you need help?

      Marek Caletka

      Marek Caletka

      +420 734 698 768

      Send inquiry
      We'll get back to you within 24 hours
      Create inquiry

      Create inquiry

      mm70_22_mastermill_70.jpg
      Product
      Magnetic chuck for milling Mastermill 70

      Walmag products are in companies such as

      Service directly in the Czech Republic

      As one of the few companies on the market, we provide complete service, overhauls, and repairs for all our products. We also don't refuse inspections and testing of products from other brands. Our goal is for our magnetic systems to last you as long as possible. Therefore, we provide professional warranty and post-warranty service, repairs, and overhauls of all technologies, as well as operator training.

      Show more

      About Walmag

      Your supplier of magnetic applications for over 35 years
      We are a Czech manufacturer of high-quality lifting magnets, magnets for machining workholding, and demagnetizers. We offer warranty and post-warranty service, repairs, and overhauls of all our technologies.

      More about us 

      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?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?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?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?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?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?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?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?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?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?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.

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