Electromagnetic chuck Circu EM

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    Electromagnetic chuck Circu EM

      The Circu EM is an electromagnetic chuck with radial pole layout designed for installation on rotary tables of grinders and lathes for stable clamping of rotary workpieces with circular or cylindrical shapes such as bearing rings, bushings, saw blades, etc.Due to the high holding force and the possibility of its control, this chuck is also suitable for thin workpieces.


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

      We will be happy to lend you the magnet for14 days for free; you only pay for the shipping costs to and from your location. Please inquire about the current availability of specific sizes in advance and send us your request via theinquiry 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 a personal discussion, you can also directly contact our sales representatives, whose phone numbers can be found in the Contactssection.

      Product description

      Important parameters:

      • Technology: Electromagnet
      • Holding force: 120 N/cm2
      • Poles: radial
      • Regrinding limit: 8 mm
      • Guarantee: 2 years

      Additional information:

      The pole plate can be equipped with T-slots for mounting pole extensions on request. This provides free access to the workpiece for machining the outside, inside diameter and front per one clamping, or it is possible to drill through the workpiece body. Power for the chuck is provided by a suitable control unit. The chuck can be connected via the slip ring in the machine tool spindle, or through the connector located directly on the magnetic chuck.

      Use:

      • machining external and internal surfaces of round and ring shaped workpieces on vertical grinders
      • turning
      Výkres Circu EM
      Catalog number D (mm) H (mm) Weight (kg) Voltage (V)
      Circu EM 400 400 90 76 110
      Circu EM 500 500 90 120 110
      Circu EM 600 600 100 195 110
      Circu EM 700 700 100 265 110
      Circu EM 800 800 100 365 110
      Circu EM 1000 1000 100 550 110
      Circu EM 1250 1250 123 990 110
      Circu EM 1500 1500 120 1550 110

      Documents for Download

      Circu EM Circular Electromagnet for Demanding Turning and Vertical Turning Lathe Applications

      The Circu EM circular electromagnetic chuck represents a high-performance solution designed for clamping large and heavy rotating parts on conventional and vertical lathes (carousels) and cylindrical grinders. This industrial electromagnet generates an extremely strong and deep magnetic field capable of securely penetrating even the rough, unfinished surfaces of castings or forgings. Unlike permanent systems, Circu EM allows for full integration into the machine tool's control system. The operator can thus use the electronic control unit to continuously adjust the clamping force precisely according to current needs – from gentle workpiece centering to maximum power for heavy-duty roughing.

      circuem_2_Circu EM.jpg

      Robust construction with concentric pole configuration for maximum stability

      The key advantage of the Circu EM chuck is its well-thought-out concentric (circular) arrangement of magnetic poles, which ensures an even distribution of clamping force over the entire surface from the center to the outer edge. The massive steel body and internal coils completely encapsulated in durable insulating resin guarantee high rigidity, excellent heat dissipation, and 100% waterproofness. The chuck is thus perfectly protected against the aggressive effects of cooling emulsions and hot metal chips. Thanks to the high limit for repeated grinding of the top plate and mechanical resistance to large centrifugal forces, the Circu EM series from the Czech manufacturer Walmag guarantees a long service life and absolute safety in demanding multi-shift operation.

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      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.

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      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.

      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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