SR3644-4458-5 Kollmorgen
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The Kollmorgen SR3644-4458-5 is a permanent magnet DC motor with a continuous duty rating and SCR-rated control. Part of the SR and SRF Permanent Magnet Motors series, this motor has a rated power of 2.0 HP, a rated speed of 2800 RPM, and operates at 100 VDC with a rated current of 16.8 A. It uses a totally enclosed non-ventilated enclosure.
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Product Description:
The SR3644-4458-5 is part of the SR and SRF Permanent Magnet Motors series produced by Kollmorgen. The unit is a DC machine intended for integration with solid-state drives in material-handling, packaging, and light process equipment. By supplying constant torque over a wide speed range, it supports precise velocity regulation in automated stations where motion must remain synchronized with sensors and actuators. Its operating characteristics also make it suitable for applications that require controlled acceleration, repeatable indexing, or consistent web tension.
This motor carries an SCR-rated control designation, meaning its armature characteristics are tuned for phase-controlled rectifier supplies commonly installed in DC drive cabinets. A continuous duty rating indicates that the motor can operate indefinitely at its rated load while remaining within its thermal limits. The TENV enclosure keeps airborne contaminants away from internal components while using the housing surface to dissipate heat. Adequate clearance around the housing allows heat to move into the surrounding air when the motor is installed in a confined panel or machine frame. Its permanent-magnet DC construction eliminates field winding losses and provides immediate torque when the armature is energized. Nominal load current is 16.8 A, so the conductors, fuses, and drive current limits must accommodate the steady armature demand.
The motor delivers 2.0 HP of mechanical power at the shaft when it reaches a rated speed of 2800 rpm. The drive supplies 100 VDC across the armature to reach this operating point. Proportional adjustment of the armature voltage provides linear speed control for indexing, conveying, or tensioning tasks. The rated power and speed should be considered when selecting a gearbox, pulley, or direct-drive coupling for the connected load. Proper current limiting helps prevent excessive heating during sustained operation, while suitable mechanical alignment reduces unnecessary bearing and coupling stress. The enclosed housing does not use an internal ventilation fan, so its exterior surface should remain unobstructed to support normal heat dissipation during continuous operation.
