E34HCHT-LDK-ND-00 Kollmorgen
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The Kollmorgen E34HCHT-LDK-ND-00 is a stepper motor in the E Hybrid Stepper Motors series with a NEMA 34 frame size and heavy duty mounting style. It features a holding torque of 8.76 Nm, a rated current of 5.2 amps per phase, and weighs 4.40 kg. The motor is constructed with SIGMAX construction and supports a smooth shaft and 200 steps per revolution.
Internal Product Review
The E34HCHT-LDK-ND-00 is a Kollmorgen hybrid stepper motor with a NEMA 34 frame size and 8.76 Nm holding torque. A 1.8-degree step angle and ±1.5% step accuracy support dependable positioning in indexing and motion applications. System MS connector termination adds practical integration value, while the winding is optimized for maximum torque at low speed.
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Product Description:
The E34HCHT-LDK-ND-00 is a hybrid stepper motor produced by Kollmorgen within the E Hybrid Stepper Motors series. This four-stack unit uses SIGMAX construction and a smooth shaft to deliver high torque density in incremental motion systems. Its heavy-duty NEMA mounting and System MS connector allow installation in machinery that requires open-loop positioning without an encoder. By advancing in 1.8-degree mechanical steps, the motor converts pulse trains from a microstepping drive into precise linear or rotary movement in pick-and-place, indexing, and material-handling axes.
The motor fits the NEMA 34 frame envelope and produces a holding torque of 8.76 Nm, so fixtures remain stationary when the coils are energized and the shaft is stopped. Each revolution is subdivided into 200 steps at a mechanical increment of 1.8 degrees, providing positional resolution suitable for lead screws or gearheads. The rated phase current is 5.2 A per phase, so matched drive electronics must supply up to 5.2 amperes per winding while limiting dissipation across the winding’s 0.71 ohms of phase resistance. Class B insulation is rated to 130 °C, while a 340 VDC dielectric withstand rating and 100 MΩ insulation resistance protect the coil system. A thermal resistance of 1.7 °C per watt indicates the rate of heat transfer from the windings to the frame during continuous operation.
An inductance of 8.7 mH per phase limits current rise time and affects high-speed torque roll-off. The motor has a mass of 4.40 kg, and its rotor inertia of 0.035 oz-in-s² balances quick acceleration against load damping. It tolerates ambient temperatures from -20 °C to +40 °C, enabling operation in unconditioned factory areas. The motor supports an axial load of up to 801 N and a radial load of up to 427 N, accommodating belt tension or gear overhang. Its step accuracy is ±1.5%, keeping position error within typical mechanical backlash. Four parallel leads simplify connection to bipolar drives, and the winding is optimized for maximum torque at low speed, making it suitable for indexing tables that seldom exceed 600 rpm.
