Product Description:

The E31NRFC-LNN-NS-00 is a hybrid stepper motor produced by Kollmorgen as part of the E Hybrid Stepper Motors series. By advancing a fixed angle each time it receives a control pulse, the motor supplies open-loop positional control. It is suited for feeders, small gantry axes, and metering devices where repeatable incremental motion is required in industrial automation.

The motor uses a NEMA 34 frame, allowing it to bolt to standard 3.4-inch square mounting patterns. With a holding torque of 316 oz-in (2.23 Nm), the rotor can resist back-driving when power is applied and the shaft is at rest. Each full step advances 1.8 degrees, which yields 200 discrete full-step positions per shaft revolution and simplifies integer ratio gearing. Low-mass dynamics come from a rotor inertia of 0.0083 oz-in-s², supporting rapid start-stop sequences. SIGMAX laminated construction concentrates flux in the air gap, and a single-stack magnetic circuit keeps the overall motor length to 2.58 in. Class B (130 °C) winding insulation, 100 MΩ insulation resistance, and a 340 Vdc dielectric rating provide electrical margin, while eight 22 AWG leads extend 12 in so that series, half-coil, or parallel connection options can be wired without splicing.

The shaft can accept an axial thrust of 180 lb and a radial side load of 35 lb, permitting the motor to drive moderate belt tensions or lead screws without auxiliary bearings. Continuous operation is specified from -20 °C to +40 °C, which aligns with typical cabinet or ambient plant conditions. A body diameter of 3.38 in maintains clearance inside compact machinery, while the smooth shaft finish eases coupling installation. Step accuracy remains within ±1.5%, and the regular lead-wire connection style supports straightforward integration in systems that already follow the NEMA mounting convention.