E33NRHA-LNN-NS-00 Kollmorgen
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The Kollmorgen E33NRHA-LNN-NS-00 is a hybrid stepper motor from the E Hybrid Stepper Motors series with a NEMA 34 frame size and SIGMAX construction. It has a holding torque of 6.64 N-m, a rated current per phase of 8.6 Amps, and provides 200 steps per revolution at a 1.8 degree step angle. This motor weighs 7.6 pounds and supports both axial and radial loads of 180 and 35 pounds, respectively.
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Product Description:
The E33NRHA-LNN-NS-00 hybrid stepper motor is produced by Kollmorgen for the E Hybrid Stepper Motors series and serves as a position-controlled actuator in automated machinery. Its SIGMAX construction uses three stator stacks to increase flux density, and the assembly withstands axial forces of up to 180 lb and radial forces of up to 35 lb through a smooth shaft interface. Wiring is provided through a regular lead-wire arrangement consisting of four parallel 18 AWG leads that extend at least 12 in, supporting direct cabinet terminations. The overall housing length is limited to 5.06 in, and the NEMA mounting flange supports installation in compatible machine frames.
A NEMA 34 frame contributes to the motor’s static holding torque of 6.64 N-m. Each full step advances the rotor by 1.8 degrees, so a complete revolution requires 200 full steps. Controller-managed microstepping can provide finer positioning than this base resolution. Step accuracy stays within ±1.5 %, minimizing cumulative positioning error in multi-axis assemblies. To generate rated torque, the windings draw 8.6 A per phase when the specified four-lead parallel connection is used. The rotor inertia is 0.025 oz-in-s², balancing rapid acceleration with load stability.
The phase resistance is 0.23 ohms, and an inductance of 2.3 mH affects current rise time when a chopper drive is used. The motor operates at ambient temperatures from -20 °C to +40 °C. Heat generated in the copper windings is conducted through the frame with a thermal resistance of 2.0 °C/W. Class B insulation tolerates winding temperatures up to 130 °C, while the electrical system provides 100 megohms of insulation resistance at a 340 VDC high-potential test level. The motor has an overall mass of 7.6 lb, so the mounting hardware must support its weight and the applied service loads.
