E33NRFB-LDN-SS-02 Kollmorgen
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The Kollmorgen E33NRFB-LDN-SS-02 is part of the E Hybrid Stepper Motors series and features a NEMA 34 frame size with SIGMAX construction. This stepper motor has a body diameter of 3.38 inches, a double smooth shaft, and provides 200 steps per revolution at a step angle of 1.8 degrees. It uses an 8-lead connection style with 22 AWG lead wires, and operates within a temperature range of -20°C to +40°C.
Internal Product Review
The E33NRFB-LDN-SS-02 is a Kollmorgen E Hybrid Stepper Motor with a NEMA 34 frame and an 8-lead connection layout. SIGMAX construction and a laminated rotor support smooth, stable motion in demanding indexing applications. A 1.8-degree step angle with ±1.5% step accuracy makes the motor a strong choice for consistent positioning performance.
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Product Description:
The E33NRFB-LDN-SS-02 hybrid stepper motor is produced by Kollmorgen for the E Hybrid Stepper Motors series. Combining permanent-magnet excitation with variable-reluctance teeth, the device delivers discrete, open-loop position control without requiring feedback hardware. It is used on packaging lines, small gantry axes, and indexing tables where repeatable angular increments and high holding torque are required from a compact actuator.
The motor occupies a NEMA 34 frame and has a body diameter of 3.38 in, allowing it to fit standard 86 mm square mounting brackets. The laminated rotor is arranged in three stacks, and the double-ended shaft has a smooth finish so an encoder, pulley, or brake can be added without extra machining. Kollmorgen’s SIGMAX construction channels magnetic flux through low-reluctance paths to increase torque density. Each full step advances the rotor by 1.8 degrees, producing 200 discrete positions per revolution, while unidirectional step accuracy remains within ±1.5%. The motor includes a regular lead wire harness with individually insulated conductors that are at least 22 AWG and 12 inches long. This harness allows the phase wiring to be configured in series or parallel to match the drive current.
The windings meet Class B thermal limits of 130 °C and provide an insulation resistance of 100 megohms to ground when measured at 500 V, helping prevent moisture-related leakage. They tolerate a withstand test of 340 VDC, providing electrical margin for high-bus microstepping amplifiers. Reliable operation is supported across a temperature range of -20 °C to +40 °C, covering most indoor production areas without auxiliary heating or cooling. The eight-lead connection pattern supports unipolar, bipolar-series, and bipolar-parallel drive arrangements. Lead wires exit straight through the housing wall in a regular configuration, simplifying the selection of conduit or strain-relief hardware. The standard face-mounting pattern supports installation on compatible machine brackets without requiring additional adapters.
