Product Description:

The E21NRFB-LNN-NS-00 is a hybrid stepper motor built by Kollmorgen and supplied in the E Hybrid Stepper Motors series. As a NEMA-frame rotary actuator, the unit converts discrete control pulses from an indexer or drive into incremental shaft motion. This makes it suitable for conveyor positioning, labeling heads, or small gantry axes in industrial automation. Its pulse-driven operation allows predictable starts, stops, and holding positions in compact automation assemblies.

It provides a fundamental step angle of 1.8 degrees, so each full step advances the shaft by one two-hundredth of a revolution. The rotor-stator system therefore yields exactly 200 full steps per turn, enabling direct drive of machinery that requires granular indexing without external gearing. Eight parallel conductors emerge from the stator windings, and this 8-lead configuration lets the motor be wired in series or parallel for current or voltage matching. This arrangement gives more flexibility when matching the motor to different drive current ratings. The motor uses a NEMA 23 frame size, and the housing diameter measures 2.25 in, allowing installation on commonly drilled motor plates. Static positioning error remains within ±1.5% of a step, which suits typical micro-positioning tolerances.

The windings use a Class B, 130°C insulation system rated for continuous service, while a resistance of 100 Megohms between the windings and frame helps minimize leakage current during megger tests. The coil varnish withstands up to 340 Vdc without breakdown, accommodating high-voltage drives that use current limiting. The motor is intended for ambient temperatures of -20°C to +40°C, so it can start cold in unheated equipment rooms. It also remains within thermal limits during normal plant temperatures. Seasonal temperature changes during startup are acceptable when the motor stays within that ambient range.