Prime machine tools provide offer permanent magnetic chucks. These permanent magnetic chucks are used for installation on lathes, shapers and milling machines. Several sizes of rectangular and circular chucks are available. These chucks are tested as per is 4816, 1971 for holding capacity. Threr are some technical features of these magnetic chucks which include: these chucks offer 30 percent more magnetic working surface and since the surface being ground remains nonmagnetic, the chips get washed out. Thes magnetic chucks can withstand 45 kg slipping force against that specified in is standard of 36.5 kg. Ferrite magnets are used, which do not get demagnetised even if left without keepers. Several sizes of rectangular and circular chucks are available.
