Product Description:

Kollmorgen's E42HCHT-LDX-NK-00 belongs to the E Hybrid Stepper Motors series and is used for open-loop positioning in packaging lines, pick-and-place units, and conveyor diverters. It converts each command pulse from the drive into a discrete shaft increment, allowing the control system to execute programmed moves without a feedback device. Because the motor operates without an onboard feedback transducer, the drive and controller can use a simpler control structure than a closed-loop servo axis. This operating method suits applications that need predictable indexing and holding capability with simple wiring and straightforward drive electronics.

The stator uses SIGMAX lamination geometry and is arranged in two stacks to raise flux density at low speed. Its frame follows the NEMA 42 outline, and a heavy-duty mounting flange allows direct attachment to machine plates. Static holding torque reaches 18.0 Nm, giving the motor strong resistance to back-driving in holding applications. Each winding draws 7.9 A in a parallel connection across four leads, while the low winding resistance of 0.41 Ω helps limit resistive loss. Inductance of 7.8 mH supports smooth current rise during step transitions, and a System MS circular connector is used for coil termination. The winding design is optimized for maximum torque at low speed, which matches indexing and start-stop applications.

The rotor has a moment of inertia of 1.13 × 10⁻³ kg·m², which supports quick acceleration without demanding excessive current from the drive. Each command pulse advances the shaft by 1.8 degrees, and the motor provides 200 discrete steps per revolution with a step accuracy of ±1.5%. A smooth shaft is supplied for direct coupling, so torque can be transferred through an external coupling without a keyed interface. Thermal performance includes a 1.3 °C/W path from winding to ambient, and Class B insulation rated to 130 °C works with a 340 Vdc test voltage and 100 MΩ insulation resistance. Continuous service is permitted from -20 °C to +40 °C in industrial cabinet installations.