Product Description:

The STF5332-3747-61-56BC belongs to the Permanent Magnet DC Motors series offered by Pacific Scientific. Designed for closed-loop armature control, it converts a stable direct-current supply into constant-speed rotation for indexing tables, light conveyors, and material-handling axes used in automated cells. Permanent magnets in the stator supply the field flux, so external field wiring is not required and the electrical package stays simpler. This permanent-magnet layout also reduces the amount of supporting hardware needed around the motor compared with separately excited DC designs.

Under continuous load the armature draws 9.2 A, and with an armature resistance of 0.61 ohms, this sets copper loss and thermal rise. The motor is rated for 90 VDC, a common supply level for regenerative DC drives, and at that voltage the shaft reaches 1750 RPM. It delivers a steady output torque of 36.0 lb-in, and the 3.98 lb-in/A torque constant supports predictable torque response, while startup and brief transients are supported by a peak armature current of 67.0 A. Armature inductance is 8.00 mH, which influences current ripple and the response of the connected drive. A totally enclosed non-ventilated housing protects the winding from airborne contaminants and relies on the motor case for heat dissipation.

The NEMA 56C face mates directly to gear reducers and pump heads, and the overall body length is 13.30 inches. The continuous mechanical output is 1 HP, allowing the unit to drive moderate-duty loads without exceeding the temperature rise permitted by the TENV enclosure. Rotor inertia of 22.4 lb-in² moderates acceleration so motion profiles remain smooth when coupled to belts or couplings. Handling and installation are simplified by a total mass of 41 lbs. Because the housing is non-ventilated, heat leaves through the outer frame surface instead of being carried away by fan-driven airflow.