Product Description:

The MX92-FF-206EU stepper motor is built by Kollmorgen as part of the MX Hazardous Duty Stepper Motors series. This NEMA 34-class device provides open-loop positioning in conveyors, mixers, and other automation points that must meet hazardous-location rules. By advancing the rotor in fixed increments, the motor delivers repeatable motion without feedback devices, simplifying control when explosion-proof housings restrict sensor wiring. Its electrical insulation and sealed bearings support continuous service where airborne dust or vapors could otherwise affect internal windings.

Mechanical and electrical limits guide integration. The frame size is 34 (90 mm), providing a square NEMA 34 mounting face. A holding torque of 370 oz-in (2.61 Nm) helps the motor resist shaft movement at standstill, and it is achieved at a rated current of 4.0 A DC. Each winding shows a resistance of 1.0 Ω and an inductance of 11 mH, and these values influence the high-speed step response. The two phases are insulated to 340 VDC with 100 megohms of isolation, limiting leakage in damp environments. Thermal resistance is 1.7 °C/W, and the 12 in. (304 mm) leads allow connection inside rigid conduit. A rear shaft extension accepts feedback wheels or couplings.

Motion granularity is determined by the magnetic geometry. Each full electrical cycle rotates the shaft by 1.8°, so a full revolution contains 200 discrete steps. The inherent position repeatability of ±3.0% suits indexing duties that do not require servo feedback. A ground steel shaft with a diameter of 0.3750 in (9.525 mm) mates directly to standard couplers, and its extension out the rear simplifies mounting tachometers for speed verification. When the drive energizes the motor in microstepping mode, the low step angle supports smoother velocity profiles while the motor's electrical values limit current ripple and heat rise.