E33HCHT-LEK-PD-00 Kollmorgen
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The Kollmorgen E33HCHT-LEK-PD-00 is a hybrid stepper motor from the E Hybrid Stepper Motors series, featuring a NEMA 34 frame size and SIGMAX construction. It delivers a holding torque of 975 oz-in and supports a maximum axial shaft load of 180 pounds. The motor is equipped with a 500 LPR optical incremental encoder offering a 100 kHz output frequency and has a rated current per phase of 5.1 Amps.
Internal Product Review
The E33HCHT-LEK-PD-00 is a Kollmorgen hybrid stepper motor with a NEMA 34 frame and 975 oz-in holding torque. Optical incremental feedback with 500 LPR resolution supports precise motion verification and dependable indexing. A 5.1 A rated current per phase and a low-speed max-torque winding make this motor an excellent choice for demanding positioning applications.
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Product Description:
The E33HCHT-LEK-PD-00 hybrid stepper motor is produced by Kollmorgen within the E Hybrid Stepper Motors series. As a two-phase stepping actuator, it converts open-loop pulse commands from indexers or microstepping drives into precise angular displacement, making it suitable for positioning tables, packaging axes, and pick-and-place heads in industrial automation. Its NEMA 34 frame and heavy-duty mounting flange fit standard motor brackets, while SIGMAX magnetic construction increases low-speed torque density without enlarging the package.
A holding torque of 975 oz-in lets the motor resist external loads when energized at its rated current. Each full step measures 1.8 degrees, so 200 pulses command one revolution, while a step accuracy of ±1.5% limits cumulative error. The windings draw 5.1 A per phase and have a resistance of 0.61 ohms, resulting in copper loss that must be dissipated through the 2.0 °C/W thermal path. An inductance of 7.1 mH sets the electrical time constant that governs current rise at higher step rates. Class B insulation is rated for 130 °C, and the permitted ambient temperature ranges from -20 °C to +40 °C for continuous cabinet operation. Three rotor stacks and a winding optimized for low-speed operation increase torque density within the existing frame envelope.
An axial shaft capacity of 180 lb and a radial load limit of 96 lb allow the motor to carry moderate belt tension or lead-screw thrust without auxiliary bearings. The integrated optical incremental encoder supplies 500 LPR feedback at frequencies up to 100 kHz through a differential line-driver pair, enabling high-speed position verification when closed-loop stall detection is required. Power and signal conductors exit through a System MS circular connector supported by four parallel leads. The insulation resistance is 100 MΩ, and the dielectric withstand rating is 340 VDC, providing protection against moisture and transient voltage spikes.
