E31NRLC-LSS-NS-02 Kollmorgen
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The Kollmorgen E31NRLC-LSS-NS-02 is a hybrid stepper motor from the E Hybrid Stepper Motors series with a NEMA 34 frame size and NEMA mounting style. It offers 316 oz-in holding torque, 1.8 degree step angle, and features SIGMAX construction. The motor is rated for an operating temperature range of -20°C to +40°C and can handle insulation voltages up to 340 VDC.
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Product Description:
The E31NRLC-LSS-NS-02 hybrid stepper motor is produced by Kollmorgen within the E Hybrid Stepper Motors series. It is intended for open-loop position control in automated machinery. By sending controlled current pulses to the windings, a controller moves the rotor in fixed increments without requiring position feedback. This operating method suits pick-and-place heads, indexing fixtures, light conveyors, and other equipment where accurate angular placement is required.
The motor provides a holding torque of 316 oz-in, which resists back-driving while the windings are energized. Its square frame uses the industry-standard NEMA 34 mounting pattern, simplifying attachment to compatible gearheads and brackets. A smooth output shaft supports clamping couplings and timing pulleys without requiring a keyed connection. Each electrical step moves the rotor by 1.8 degrees, while the SIGMAX construction concentrates magnetic flux to increase the available torque per ampere. The coil windings have a phase resistance of 3.73 Ω and accept a per-phase current of 1.48 A, allowing the drive to regulate winding current and manage heat generation. A thermal resistance of 3.9 °C/W indicates how effectively heat from electrical losses transfers to the motor case. The motor has one stack, which forms its single magnetic section and keeps the housing suitable for compact motion assemblies.
Class B insulation materials withstand temperatures up to 130 °C, and an insulation resistance of 100 MΩ helps prevent leakage current between the windings and housing. The windings can tolerate a surge voltage of 340 Vdc, providing insulation protection during electrical transients. A phase inductance of 27.6 mH moderates the rate at which winding current rises when the controller switches each phase. Step accuracy is rated at ±1.5%, limiting variation from the commanded angular increment during positioning. The permitted operating temperature range is -20 °C to +40 °C, supporting use in common industrial environments. Four lead wires are arranged for a series connection and use standard lead-wire cabling, eliminating the need for onboard winding jumpers during installation.
