Product Description:

The E31NRFT-LDN-NS-00 is a hybrid stepper motor produced by Kollmorgen within the E Hybrid Stepper Motors series. This single-stack unit converts drive current into incremental rotary motion, allowing open-loop positioning for indexing tables, pick-and-place heads, and small conveyor sections in automated machinery. SIGMAX construction concentrates magnetic flux in the stator teeth, improving low-speed torque density, while the smooth shaft simplifies direct coupling to loads. Rated for continuous duty from -20 °C to +40 °C, the motor uses Class B insulation so the windings remain within their 130 °C limit during extended operating cycles.

The motor develops a holding torque of 2.38 N-m, giving fixed axes enough static force to resist back-driving while the motor is energized. Its frame conforms to the NEMA 34 outline, so it mounts on standardized faceplates without adapters. Each electrical step advances the rotor by 1.8 degrees, producing 200 discrete positions per revolution that can be microstepped for finer positioning. The laminated rotor and deep-slot stator increase magnetic attraction between the rotor and stator teeth. Axial loading must remain below 801 N to prevent premature bearing wear in thrust-coupled applications such as lead screw drives.

The bearings tolerate a radial load of 156 N at the reference overhung distance, allowing belt tension without additional pillow blocks. Dynamic response is influenced by the rotor inertia of 0.0083 oz-in-s²; this low value allows the shaft to accelerate quickly when operated by a controller with current ramping. Overall length does not exceed 65.5 mm, supporting dense multi-axis layouts inside compact enclosures. The assembly weighs 1.45 kg, reducing cantilever forces on lightweight gantry arms. Thermal resistance is 3.9 °C/W, allowing housing temperature to be estimated from power dissipation when selecting a suitable drive.