E33NRFB-LNS-NS-02 Kollmorgen
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The Kollmorgen E33NRFB-LNS-NS-02 is part of the E Hybrid Stepper Motors series and features a NEMA 34 frame size with NEMA mounting style. This motor has SIGMAX construction, an insulation class B rating of 130°C, and offers a step angle of 1.8 degrees with 200 steps per revolution. It utilizes a regular leadwire connection with 8 leads and operates within a temperature range of -20°C to +40°C.
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Product Description:
The E33NRFB-LNS-NS-02 is a hybrid stepper motor manufactured by Kollmorgen for the E Hybrid Stepper Motors series. In automated indexers, gantries, and small conveyor axes, the motor converts digital pulse trains into precise rotary motion without requiring closed-loop feedback. Its three-stack rotor combines permanent-magnet detent torque with incremental electromagnetic torque, allowing a compatible drive to hold or advance the load in exact step positions. This operating principle supports controlled starts, stops, and directional changes in machinery that uses pulse-based motion commands.
A square front flange that matches the NEMA 34 dimensional code allows the unit to bolt directly to standardized gearheads or brackets. Thermal protection is provided by Class B insulation rated for 130 °C, which protects the windings during continuous service. The motor has a dielectric strength of 340 VDC and an insulation resistance of 100 megohms, helping prevent electrical leakage when the unit is connected to a modern microstepping amplifier. Kollmorgen forms the stator laminations with SIGMAX construction, which concentrates magnetic flux and increases torque density without enlarging the frame. Regular lead wires exit the housing in a straight bundle to simplify series or parallel phase wiring. The smooth shaft accepts clamping couplings or pulleys without requiring a keyed connection, while the mounting face helps maintain alignment with external bearings and connected equipment.
Each electrical pulse turns the rotor 1.8 degrees, and one complete revolution contains 200 discrete positions. In open-loop motion control, this fixed resolution is paired with a step accuracy of ±1.5%, keeping positioning error within predictable limits when the motor is installed and driven correctly. The permitted ambient temperature range is -20 °C to +40 °C, making the motor suitable for indoor machinery that may remain idle in cool conditions before operating during production. Its eight-lead connection arrangement supports bipolar or unipolar drive topologies and permits the phase windings to be configured for different torque and speed requirements. A parallel connection can support higher-speed operation, while a series connection can suit applications that emphasize torque at lower speeds.
