These NEMA frame DC motors include permanent magnet designs through 5 HP and wound field designs through 500 HP designed for adjustable speed operation from SCR controls. Applications include conveyors, extruders, winders, printing presses and metering pumps. Most designs are constructed so a tachometer may be added for closed loop applications. Permanent magnet and wound field designs for 90 or 180 VDC have a 20:1 constant torque speed range.
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