Product Description:

The MX92-FF-206UE is a hybrid stepper motor built by Kollmorgen for the MX Hazardous Duty Stepper Motors series. It is engineered for positioning and speed control in automated machinery installed where flammable gases or dusts may be present. By translating digital pulse commands from a matched drive into incremental rotation, it supplies open-loop motion control that removes the need for feedback devices and simplifies wiring in zone-rated cabinets. The laminated stator and rare-earth rotor maximize torque density while maintaining Class H insulation for continuous operation at elevated winding temperatures.

A single revolution is divided into 200 full steps, each measuring 1.8°; this resolution lets the controller issue precise increments without micro-stepping. When energized, the motor develops 2.61 Nm of holding torque, so external brakes are seldom needed. Each phase draws 4.0 A DC at standstill, and the winding presents 1.0 Ω of resistance, providing a clear basis for drive sizing. The 11 mH inductance tempers current rise, while 100 MΩ insulation resistance and a 340 Vdc withstand rating protect against leakage. These parameters set the usable speed-torque envelope and the highest safe pulse rate.

Mechanically, the front bearing can accept an axial thrust of 222 N, while the shaft end tolerates a radial side load of 111 N at the specified overhang distance, supporting belt drives or spur gears without supplemental bushings. A rotor inertia of 0.123 × 10⁻³ kg·m² yields quick acceleration that complements the step accuracy discussed earlier. Heat produced by coil losses moves through the housing at a thermal resistance of 1.7 °C/W, so forced ventilation is seldom required, and the 4.1 kg mass further moderates temperature rise during duty-cycle peaks. A rear shaft extension is provided for mounting hand encoders or fans, enabling auxiliary functions without altering the primary load interface.