• Benaka Electronics

Toroidal Cores

Benaka manufactures Toroidal Cores that meet customers stringent design requirements using High Quality Grade CRGO and CRNGO Material. To construct the core, silicon steel is slit into a ribbon of steel which is then wound, like a very tight clock spring. They have multiple slitting lines to facilitate burr-free slitting of mother coils as wide as 1,200 mm down to 5 mm with precision in width to the order of a few microns.
The core is manufactured on fully-automatic Core Winding machines ensuring high stacking factor. The core is then annealed in an inert atmosphere for relieving any stress. The result is a core in which all molecules are aligned in the direction of flux, thus ensuring the desired electrical characteristics. They maintain an extensive stock of the electrical steel required in various grades of CRGO and CRNGO, with thicknesses ranging from 0.20 mm to 0.35 mm. With a range of mandrels, from 10 mm to 150 mm, we are able to manufacture a wide range of cores with a maximum OD of 200 mm.