Product Description:

Pacific Scientific manufactures the Pwm-3648-5320-50-3, a brushed DC motor in the PWM Brushed Treadmill Motors series. Designed for pulse-width-modulated armature control, this motor supplies regulated mechanical power to treadmill belts, light conveyors, and other motion stages. Within industrial automation, it serves as a compact prime mover that accepts direct current from a DC drive and converts it into smooth rotation while supporting wide speed adjustment and quick reversal. Its mechanical outline and electrical simplicity make it an alternative to small AC inverters when only a DC bus is available.

Operating from a nominal 125 VDC supply, the motor’s armature voltage aligns with many single-phase rectifier or battery systems used in fitness and light industrial equipment. During continuous duty, the windings draw 12 A, establishing the baseline thermal load on the frame. A short-term capability of 15.7 A is available for acceleration bursts before the controller settles to steady current. Shaft output speed reaches 2800 RPM, offering sufficient margin for pulley reduction without exceeding commutator limits. The housing carries a drip-proof (DP) classification, so vertical water drips will not contact live parts while internal airflow remains unobstructed.

Magnet excitation is supplied by a permanent-magnet system identified as PM, removing the need for a separate shunt or series field and helping stabilize no-load speed. Mechanical mounting follows the WF frame code, allowing installation on equipment drilled for that footprint. A protective ground lead is included, simplifying compliance with grounding rules in North American installations. The motor maintains its ratings up to an ambient temperature of 40 °C; above that temperature, the controller must derate current or add external cooling to keep winding insulation within its design limit.