E33NCHP-LDN-NH-00 Kollmorgen
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The Kollmorgen E33NCHP-LDN-NH-00 is a hybrid stepper motor in the E Hybrid Stepper Motors series, featuring a NEMA 34 frame size and a weight of 7.6 pounds. It offers a holding torque of 995 oz-in, a step angle of 1.8 degrees with 200 steps per revolution, and uses SIGMAX construction for high performance. This model supports a rated current per phase of 7.9 Amps and operates within a temperature range of -20°C to +40°C.
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Product Description:
The E33NCHP-LDN-NH-00 is a hybrid stepper motor produced by Kollmorgen within the E Hybrid Stepper Motors series for positioning and indexing duties in industrial automation. SIGMAX construction is applied to the magnetic circuit to obtain higher torque from the NEMA 34 frame without enlarging the envelope. The unit mounts through the standard NEMA pilot and bolt pattern and carries a smooth shaft for direct coupling to gears or pulleys. System MS connectors terminate the four-lead parallel windings. The three-stack rotor works with a 200-step-per-revolution design and a winding optimized for maximum torque at high speed.
The motor develops a holding torque of 995 oz-in, allowing tables and vises to stay locked when the drive is idle. Each electrical step produces 1.8 degrees of shaft rotation, giving predictable indexing that remains within the ±1.5% step accuracy. The parallel coils draw 7.9 A per phase through a resistance of 0.26 ohms and an inductance of 3.1 mH. This low impedance supports rapid slew rates and minimizes midrange instability. Rotor inertia is 0.025 oz-in-s², so acceleration is quick without excessive current demand. Thermal resistance is 2.0 °C per watt, insulation resistance is 100 megohms, and the windings withstand 340 VDC without dielectric breakdown. The bearings tolerate 35 lb of continuous radial load during belt tensioning.
Continuous service is supported from -20 °C to +40 °C, and the windings carry a thermal endurance rating of Class B at 130 °C to prevent insulation degradation during frequent reversals. A static axial thrust limit of 180 lb protects the bearing set when couplings are preloaded or screws are back-driven. With a mass of 7.6 lb, the motor adds minimal inertia to moving axes. The laminated core design keeps temperature rise moderate during extended microstepping operation.
