Electromagnetic Roller
Electromagnetic rollers give you precise, switchable magnetic control - on when you need it, off when you don't. Built for magnetic separation, metal part handling, conveying and automated production lines, our electromagnetic rollers are engineered to your exact diameter, length, magnetic strength and voltage requirements. Every roller is manufactured with robust construction for continuous industrial duty, and backed by AstraRoll's experience as a specialist roller manufacturer. Tell us your application and specifications, and we'll design and build the right electromagnetic roller for your line.
Electromagnetic Roller FAQs
An electromagnetic roller contains a wound coil inside the roller shell. When electric current passes through the coil, it generates a magnetic field that attracts ferrous materials to the roller surface; when the power is switched off, the magnetism disappears instantly. This on/off control makes it ideal for applications where you need to attract and release metal parts automatically, or separate magnetic from non-magnetic materials.
They are widely used for magnetic separation (removing iron and steel contamination from bulk materials), metal part conveying and positioning in stamping and cutting lines, magnetic clamping and release in automated machinery, and scrap metal handling. Industries include recycling, mining, food processing, packaging, printing and general manufacturing.
Yes - that is our standard. We manufacture rollers to your required diameter, face length, shaft configuration, magnetic force and voltage (AC or DC), and can supply with optional features such as higher temperature resistance, dust/water protection and special surface coatings. Send us your drawing or specifications and we'll confirm the best solution.
A permanent magnetic roller always has magnetism and cannot be switched off, which suits continuous separation. An electromagnetic roller gives you controllable, switchable magnetism - you can turn the field on and off, adjust the strength, and demagnetise completely when needed. This makes it the better choice for intermittent or precision applications.
Electromagnetic rollers are built with heavy-duty shells, sealed coil assemblies and quality bearings for continuous industrial service. They require minimal routine maintenance beyond standard inspection of the coil and connections. For standard specifications we offer competitive lead times, and we provide documentation and support for installation and commissioning.
What you may want to know about Electromagnetic Roller
Electromagnetic rollers: how they work and how to choose one
An electromagnetic roller uses a coil wound inside the roller body to create a magnetic field when energised, allowing ferrous materials to be attracted, held, conveyed or separated with precise control. Because the magnetic field can be switched on and off instantly, electromagnetic rollers are widely used in magnetic separation systems - removing ferrous contamination from grains, plastics, minerals and recycled materials - as well as in metal handling lines where steel sheets or parts must be picked up, positioned and released automatically. Compared with permanent magnetic rollers, which offer constant magnetism without power, electromagnetic designs provide adjustable and demagnetisable fields, making them suitable for intermittent operation, precision positioning and applications where residual magnetism must be avoided. Key selection factors include roller diameter and face length, required magnetic force, rotational speed, voltage and duty cycle, as well as environmental conditions such as temperature, dust and moisture - all of which should be confirmed with the manufacturer before ordering. As a specialist roller manufacturer, AstraRoll designs and builds electromagnetic rollers to customer specifications, with options for special coatings, high-temperature windings and protective enclosures to suit demanding production environments. Whether you are upgrading an existing line or designing new equipment, contact AstraRoll to discuss your application and receive a tailored quotation for electromagnetic rollers made to your exact requirements.