H31NLEB-LNN-NS-00 Kollmorgen
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The Kollmorgen H31NLEB-LNN-NS-00 is part of the H Hybrid Motors series and features a NEMA 34 frame with standard construction and NEMA mounting. This motor has a holding torque of 158 oz-in, operates with a rated current per phase of 4.2 Amps, and offers an axial shaft load of 180 pounds. Its connection style is splashproof with a conduit connector, and it weighs 3.2 pounds.
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Product Description:
The H31NLEB-LNN-NS-00 is a hybrid stepper motor produced by Kollmorgen for the H Hybrid Motors series. It converts sequence-driven phase currents into precise incremental rotation, making it suitable for indexers, pick-and-place axes, and other positioning tasks in industrial automation where open-loop accuracy is acceptable. The unit follows NEMA mounting conventions, and its smooth shaft simplifies connection to timing pulleys or flexible couplings. This configuration supports controlled incremental motion without requiring a mechanical commutator or a separate position sensor for basic open-loop operation.
The motor body matches the NEMA 34 frame outline, and its electromagnetic stack supports a holding torque of 158 oz-in. Each phase draws 4.2 A with a resistance of 0.50 Ω and an inductance of 1.6 mH, providing low-speed torque and responsive operation across the motor’s usable speed range. Motion is resolved into 200 discrete positions per revolution because the rotor advances in 1.8° increments, with a step accuracy of ±1.5%. Six flying leads pass through a splash-proof conduit connector to a termination board, while the windings maintain an insulation resistance of 100 MΩ and a dielectric rating of 340 V DC. The single lamination stack keeps rotor inertia at 0.0083 oz-in-s². A thermal resistance of 3.9 °C/W helps the winding temperature remain within the Class B limit when the ambient temperature stays between -20 °C and +40 °C.
The motor accepts an axial shaft load of 180 lb and a radial shaft load of 35 lb, allowing it to support belt tension or lead-screw thrust without auxiliary bearings. Its overall length does not exceed 3.62 in, making it suitable for shallow machine assemblies. The frame weighs 3.2 lb, which helps limit moving mass when the motor is mounted on a gantry stage. Class B insulation permits continuous operation at winding temperatures up to 130 °C. The splash-proof conduit entry has a 1/2-inch NPS thread and helps protect the internal windings from washdown spray or coolant splashes. The compact body and standardized mounting outline also simplify alignment with compatible brackets, gearboxes, and motion components.
