Product Description:

The CTM31NLF09KAA00 is a hybrid stepper motor manufactured by Kollmorgen within the CT Stepper Motors series and included in the Cool Torque Maximum Series portfolio. It is intended for open-loop positioning tasks in industrial automation, including indexers, small conveyors, and actuators that require high holding torque. The model belongs to the Enhanced Series for maximum torque and efficiency and fits the standard NEMA 34 footprint, allowing installation on machinery built for that mounting pattern. It is well suited to applications that depend on repeatable indexing without closed-loop servo feedback.

This motor is wound for bipolar operation, so its phase pairs are energized by an H-bridge drive that can reverse current direction. In this configuration, it produces 4.9 N-m of holding torque to resist process loads at standstill. Thermal rise is moderated by a phase current of 0.9 A, and the insulation system withstands up to 340 VDC between the windings and the laminated core. The frame follows the Size 34 standard, which gives it an 85 mm square face. The motor uses four flying leads, with one pair assigned to each phase. A single stack lamination core keeps the overall length low while maintaining the magnetic path needed for the rated torque.

The shaft accepts 100 lbs of axial force in either direction and can withstand 65 lbs of radial load at its midpoint. The front flange is drilled with NEMA Through Holes for straightforward bolt-through mounting, and a Straight Keyway shaft transfers torque to pulleys or couplings without slip. Those load limits support common belt-driven and direct-coupled arrangements when the motor is mounted with proper alignment. No rear accessories are fitted, which leaves the back end clear and helps maintain airflow around the endbell. The leads connection style also simplifies cable routing in compact enclosures.