Product Description:

The SRF5348-4485-84-5-45BC-CU is a permanent-magnet DC motor produced by Pacific Scientific within the Permanent Magnet DC Motors series. This unit converts a fixed DC supply into controllable rotary motion that automation controllers use to drive conveyors, web unwinders, or light press feeds. Because torque is proportional to armature current, the motor lends itself to straightforward current-loop regulation, giving machine builders a simple way to obtain repeatable speed and position in applications where an AC vector drive would be unnecessary.

This motor carries a continuous armature load of 7.8 A, a level that the windings can endure indefinitely when proper cooling air passes across the TEFC housing. The drive bus is set at 180 V DC, allowing direct connection to full-wave rectified 208–230 V mains. With that supply, the shaft reaches 1750 RPM, a standard base speed that matches many gear ratios. At base speed, it produces a steady 54.0 lb-in of torque, giving enough turning force for moderate-inertia motion axes. An armature inductance of 13.5 mH slows current rise just enough to filter commutation spikes while still permitting fast dynamic response. Integration is aided by the NEMA 145TC frame and the NEMA C face mount, which position the pilot and bolt circle in common industrial patterns.

During rapid starts, the winding can accept a surge of 62.0 A, and the resulting electromagnetic gain of 7.9 lb-in/A converts that current into high breakaway torque without oversaturating the magnets. The copper path measures 1.2 Ω, so voltage drop and heat rise remain predictable under both intermittent and continuous duty. When the motor settles at its rated point, it is capable of delivering 1.5 HP to the load, supporting compact yet powerful machine layouts. A welded base style anchors the frame to slide rails or adapter plates, limiting deflection under tension or belt pull and helping maintain shaft alignment.