SR3624-8291-7-56BC Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen SR3624-8291-7-56BC is part of the SR and SRF Permanent Magnet Motors series and is rated for 0.25 horsepower at 1750 RPM with a continuous current of 2.7 amps. It features a TENV enclosure, weighs 18 pounds, and has a rated voltage of 90 VDC. The motor has a continuous torque of 9.0 lb-in and a peak current of 54 amps.
Internal Product Review
The SR3624-8291-7-56BC is a Kollmorgen permanent magnet motor with a 0.25 HP rating and 1750 RPM rated speed. Continuous output remains well balanced at 9.0 lb-in torque with 2.7 A continuous current, making the unit a strong fit for precise DC motion duty.
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Product Description:
The SR3624-8291-7-56BC is a permanent-magnet DC motor built by Kollmorgen and supplied within the SR and SRF Permanent Magnet Motors series. This frame-size 56 motor converts electrical energy into continuous rotary motion for small material-handling lines, light actuators, and feed mechanisms used in industrial automation. Its permanent magnets eliminate field wiring, and the motor responds to armature voltage commands from common DC drives, enabling closed-loop speed control where precise torque delivery is required.
Under steady load, the armature draws 2.7 A, and that current supports a continuous shaft output of 9.0 lb-in so designers can calculate the available mechanical margin. The armature is rated for 90 VDC, allowing the motor to connect directly to standard 90-volt drive modules without step-down converters. At that voltage, the shaft turns at 1750 rpm, a base speed compatible with belt drives or direct coupling to moderate-inertia loads. The electrical input and mechanical output result in a rated power of 0.25 HP, providing enough capacity for indexing duties while allowing the use of compact drive components. The armature has a resistance of 2.5 Ω and an inductance of 9.6 mH. These electrical values influence current ripple and controller tuning during dynamic movements.
For short accelerations, the winding tolerates a surge current of 54.0 A, providing several times the continuous torque for brief operating periods. The magnetic circuit produces approximately 3.9 lb-in/A, so motion controllers can calculate torque output directly from commanded current. The motor has a 5.875-inch mounting bolt circle, four 3/8-16 UNC through holes, and an overall length of 9.13 inches. Its shaft transmits torque through a key measuring 0.188 × 1.38 inches. The motor weighs 18 lb, allowing installation on suitable mounting brackets while providing enough mass to help damp vibration. A TENV enclosure protects internal components from dust while relying on surface convection for heat removal, making the unit suitable for clean, ventilated equipment bays.
