Product Description:

The MX112-FF-401EU is a hazardous-duty stepper motor produced by Kollmorgen in the MX Hazardous Duty Stepper Motors series. It is intended for closed-loop positioning or open-loop indexing tasks in industrial automation zones where flammable gases or dust may be present. The unit converts drive-generated pulse streams into incremental shaft rotation, supplying the mechanical torque needed to move valves, actuators, or small conveyor axes within classified areas. Its operating principle supports repeatable motion tasks that require controlled angular movement in harsh industrial environments.

The rotor advances in discrete increments because the magnetic circuit generates 200 full steps per revolution with a 1.8° step angle, which permits predictable positioning without feedback. A holding torque of 9.82 Nm keeps the axis fixed when pulses stop, while the stator insulation is rated for 340 VDC to help prevent dielectric breakdown during overvoltage transients. Each phase draws 2.7 A DC through a coil resistance of 2.5 ohms, and the 2.5 mH inductance means drive tuning must account for the electrical time constant. Rotor inertia of 0.114 oz-in-s² limits acceleration demand on the control loop. The double-ended shaft allows an encoder or brake to be mounted on the rear side, and the motor tolerates radial and axial loads of 111 N and 222 N, respectively, without supplemental bearings. A thermal resistance of 1.8 °C/W indicates the expected temperature rise from winding losses.

At ambient temperatures from -20 °C to +40 °C, the motor maintains its operating range, and the thermal path keeps winding temperature within limits when the housing is mounted to a metallic frame. Cumulative positioning error remains within ±5 % of one step, so sequence accuracy stays acceptable over repeated cycles. A mass of 8.2 kg adds stiffness against vibration and supports heat dissipation. This helps the motor remain stable during repeated starts and stops in indexing applications.