Product Description:

The STF3758-5150-61-56BC is a permanent-magnet DC motor produced by Pacific Scientific as part of the Permanent Magnet DC Motors series. In industrial automation, this motor supplies constant torque over a wide speed range, making it suitable for conveyors, tension rolls, or material-handling axes that rely on direct-current drive sources. This type of motor is commonly used where smooth speed control and steady torque are needed across changing process conditions.

Rated for operation from a supply of 90 VDC, the unit draws a continuous armature current of 7.3 A to produce a sustained torque output of 27.0 lb-in. That torque is available up to the base speed of 1750 RPM, so simple voltage adjustment can vary shaft velocity without sacrificing load-carrying capability through the normal operating range. The current-to-torque relationship is set by a motor constant of 4.05 lb-in/A, giving predictable response to drive commands. Electrical dynamics are also influenced by 3.50 mH inductance and 0.72 Ω resistance, which affect current rise and heat generation during operation. The motor uses a NEMA 56C frame standard with a NEMA C-face mount, allowing direct coupling to gear reducers or pump heads. A totally enclosed non-ventilated housing protects the winding, and the 15.20 in overall length supports compact machine layouts.

For intermittent overload conditions, the armature can accept a peak current of 126.0 A, enabling short bursts of acceleration without immediate thermal damage. The design delivers up to 0.75 HP at the shaft, which suits light-to-medium duty motion tasks in packaging or feed systems. The housing carries an ingress protection rating of IP65, helping keep dust and low-pressure water jets away from internal components on the factory floor. At a shipping weight of 41 lb, the motor has enough iron mass to help conduct heat away from the stator while remaining manageable for installation in standard industrial assemblies.