Product Description:

The SRF3736-4983-84-5-56BC-CU is a permanent-magnet DC motor produced by Pacific Scientific as part of the Permanent Magnet DC Motors series. Designed for fixed-speed material handling, indexing tables, and other automation axes that rely on direct armature voltage control, the unit delivers consistent mechanical output without the need for field excitation. A totally enclosed fan-cooled housing protects the windings from airborne contaminants, while its NEMA 56C face simplifies flange mounting to gearheads, pumps, or belt drives commonly used on factory equipment.

During continuous duty, the armature draws 3.2 A, which marks the normal thermal operating point for the winding insulation and bearings. At that same operating point, the shaft supplies 27.0 lb-in of torque, enough to support medium-load conveyors without excessive gear reduction. The motor’s electrical reactance, listed at 28.8 mH, influences dynamic response by limiting current rise during sudden command changes. Rated speed is 1750 RPM, matching the base speed of many DC drives so closed-loop controllers can work with minimal scaling. A nameplate armature voltage of 180 V provides the reference for selecting a compatible power supply.

For short bursts such as line start or shock loading, the armature can accept a peak of 26.0 A, allowing acceleration torque well above the continuous rating without demagnetizing the rotor. That transient capability supports the declared output of 3/4 HP, while a winding resistance of 3.6 Ω helps keep current behavior predictable. Each ampere delivered translates to predictable torque because the motor constant is 8.8 lb-in/A, which simplifies drive gain calculations. With an overall length of 11.25 in. and a shipping mass of 23 lbs., the motor fits compact installations where weight and envelope must remain within typical NEMA 56C limits.