E34HRHT-LDS-SS Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen E34HRHT-LDS-SS is part of the E Hybrid Stepper Motors series and features a NEMA 34 frame size with heavy duty mounting style. It has a holding torque of 8.78 Nm and a step angle of 1.8 degrees, providing 200 steps per revolution. This stepper motor weighs 4.41 kg and uses a SIGMAX construction with Class B insulation rated for 340 Vdc.
Internal Product Review
The E34HRHT-LDS-SS is a Kollmorgen hybrid stepper motor in a NEMA 34 frame with 8.78 Nm holding torque. A 1.8-degree step angle and ±1.5% step accuracy support consistent indexing and dependable motion control. SIGMAX construction and a winding optimized for maximum torque at low speed make this model an excellent fit for demanding positioning applications.
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Product Description:
The E34HRHT-LDS-SS is a hybrid stepper motor engineered by Kollmorgen for motion platforms that require repeatable positioning without closed-loop feedback. Belonging to the E Hybrid Stepper Motors series, it uses SIGMAX construction to concentrate magnetic flux in the stator teeth and increase torque density. A heavy-duty NEMA 34 mounting flange aligns the laminated rotor with external gearheads, while the double-ended shaft simplifies encoder or lead screw coupling. Wiring exits the housing through a standard lead-wire pigtail. The four-lead parallel winding configuration connects directly to a compatible bipolar stepper drive.
The motor provides a holding torque of 8.78 Nm, enabling static load support while the coils are energized. Its detent torque is 0.59 Nm, which indicates the mechanical resistance present when power is removed. Each full step advances the rotor by 1.8 degrees, resulting in 200 full steps per revolution and an accuracy of ±1.5%. The rated phase current is 5.2 A DC, and the phase resistance of 0.71 Ω places a moderate electrical load on compatible drives. A phase inductance of 8.7 mH influences current rise time and supports smooth operation at low speeds, where the maximum-torque winding performs effectively. Four stator stacks increase magnetic flux while keeping the motor housing compact for its torque capacity.
The thermal resistance from the copper windings to the frame is 1.7 °C/W, and the permitted continuous operating temperature ranges from -20 °C to +40 °C. Class B insulation supports a maximum hot-spot temperature of 130 °C. The insulation system has a resistance of 100 MΩ and can withstand 340 V DC. Rotor inertia is 0.247 × 10⁻³ kg·m², supporting balanced acceleration when the motor is coupled to medium-mass loads. The motor has an overall mass of 4.41 kg, which provides a stable installation while remaining suitable for moving gantry axes. Its frame and rotor mass also help limit vibration during incremental positioning and low-speed holding operation.
