Tachometric controls presents fractional hp permanent magnet dc motors these dc motors runs on permanent [magnetic] field excitation. These motors are available in the range of 1 kg cm to 60 kg cm torque; 1000 to 5000 rpm speed with a input power up to 1000 w; and voltage ranging from 12 to 220 v dc. The salient features of permanent dc motors include: strontium ferrite magnets used; totally enclosed type construction; prelubricated sealed imported bearings on both ends of the shaft; dynamically balanced rotors; compact and lightweight; steel body protected against corrosion; f-class insulation standard; and connection through flying leads/terminal box.
