1. Sturdy construction: in 3 PH squirrel- cage design; free from electric brushes; minimized trouble.
2. Simple structure and easy maintenance.
3. Simple operation and easy control.
4. Characteristics:
(3) Small starting current, large starting torque and superior adaptability to speed.
(4) With its superior fixed tension, the winding fabric, bands and thread can obtain moderate tension with no need of re-regulation of tension during operation.
(5) With moderate tension, neat and unbroken winding can be obtained.
1. Application: (1) For winding: A. Fabric, bands made of plastic, rubber, fabric or paper. B. Thread and wire: copper, iron and aluminum wire, insulating electric wire and plastic string. C. Liquid material and mixer. (2) For dying and printing fabircs. (3) For starting the master motor. Used in braking, and feeding devices and with cloth inspecting machines and lifters. 2. Data required in selecting torque motors: (1) For general use or for drawing copper wire (different controllers are adopted). (2) The required highest speed. (3) The min. winding up diameter and the max. dia. Of a complete wound roll. (4) The max. winding tension. (5) The models of retarding motors and the efficiency and the ratio of retarding. a. In principle, 4-p motors are most economical; a large-size motor should have its capacity decreased when being operated at lower speed for long period. b. 1 kg-m=100kg-cm; 0.1kg-m=10kg-cm; an ordinary 1 HP 4P motor ensures 1700 rpm and 0.427 kg-m torque. c. The output range is 0.01 to 5.0 kg-m, which is available in different models, including 2P, 6P, 8P, 12P, 4/8P 4/6P and 6/12P or different speeds.