E33NRFA-LNN-NS-00 Kollmorgen
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The Kollmorgen E33NRFA-LNN-NS-00 is a stepper motor in the E Hybrid Stepper Motors series with a NEMA 34 frame size and weighs 3.45 kg. It features 6.64 N·m holding torque, a smooth shaft, and an operating temperature range from -20°C to +40°C. The motor has a step angle of 1.8 degrees with 200 steps per revolution and uses SIGMAX construction with 8 lead connections.
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Product Description:
The E33NRFA-LNN-NS-00 is a hybrid stepper motor produced by Kollmorgen within the E Hybrid Stepper Motors series. Its 128.5 mm body fits the NEMA 34 frame envelope and mounts through the standard NEMA pattern, so it can fit common machine layouts without special adapters. A regular leadwire connection with eight separate conductors allows parallel or series winding schemes, and three internal rotor stacks with SIGMAX construction increase torque density. The eight-lead arrangement also gives flexibility when matching the motor to different drive voltage and current ranges. A smooth shaft presents a plain journal for couplings, and the unit operates from -20 °C to +40 °C with a step accuracy of ±1.5%, making it suitable for indexing tables and pick-and-place axes in industrial automation.
The motor supplies a holding torque of 6.64 N·m, helping hold loads in position during standstill. Each full step covers 1.8 degrees, giving 200 step increments per revolution for straightforward open-loop positioning. This step angle is widely used in pulse-driven motion systems that need predictable incremental movement. With the windings connected in parallel, electrical characteristics include a phase inductance of 2.3 mH and a phase resistance of 0.23 Ω, which support fast current rise and tight control. In this configuration, the windings accept a rated current of 8.6 A, while a series connection reduces continuous current to 4.3 A for drives with lower current capacity.
Dynamic response is further shaped by a rotor inertia of 0.177 × 10⁻³ kg·m², balancing quick starts with stable load control. Heat moving from the stator to the case sees a thermal resistance of 2.0 °C/W. The motor uses Class B insulation rated to 130 °C and withstands a 340 Vdc dielectric test. An insulation resistance of 100 Megohms guards against leakage in humid environments, while the overall mass of 3.45 kg keeps moving load modest on gantry or Cartesian stages.
Frequently Asked Questions about E33NRFA-LNN-NS-00:
Q: What is the holding torque provided by the E33NRFA-LNN-NS-00 stepper motor?
A: This model delivers a holding torque of 6.64 N·m, suitable for applications requiring high torque in a NEMA 34 frame motor.
Q: How many steps per revolution does the E33NRFA-LNN-NS-00 provide?
A: The E33NRFA-LNN-NS-00 has a 1.8 degree step angle, resulting in 200 steps per full revolution.
Q: What connection style and number of leads does the E33NRFA-LNN-NS-00 feature?
A: The connection style for this stepper motor is regular leadwire with 8 leads, allowing multiple wiring configurations.
Q: What is the operating temperature range for the E33NRFA-LNN-NS-00?
A: This motor operates between -20°C and +40°C ambient temperature.
Q: What construction design is used in the E33NRFA-LNN-NS-00 stepper motor?
A: The E33NRFA-LNN-NS-00 features SIGMAX construction, enhancing its performance and efficiency.
