E33NRFB-LNW-NS-00 Kollmorgen
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The Kollmorgen E33NRFB-LNW-NS-00 is part of the E Hybrid Stepper Motors series and features a NEMA 34 frame size with SIGMAX construction. This motor supports an axial load of 180 pounds and a radial load of 35 pounds, while weighing 7.6 pounds and offering a step angle of 1.8 degrees for 200 steps per revolution. The unit uses a regular leadwire connection style with 8 leads and operates within a temperature range of -20°C to +40°C.
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Product Description:
Kollmorgen’s E33NRFB-LNW-NS-00 is a hybrid stepper motor in the E Hybrid Stepper Motors series. The device uses SIGMAX construction to strengthen magnetic flux and mounts through a standard NEMA face. A compact body length of 5.06 in keeps the motor inside shallow cabinets, while a smooth 0.3750 in shaft projects 1.25 in beyond the front bearing for direct coupling. Power and phase conductors exit through a regular lead wire connection with eight individual leads, providing flexible series or parallel coil wiring. At 7.6 lb, the rotor and housing add moderate mass to X-Y stages without overloading linear guides.
The motor conforms to the NEMA 34 frame, providing a 3.4 in square flange that aligns with common indexers. Internally, 3 laminated stacks form the magnetic circuit and support a standard 1.8-degree step angle. This step angle produces 200 discrete shaft positions per revolution. During open-loop operation, the ±1.5% step accuracy helps keep indexed parts within the required positional tolerance. A low 0.025 oz-in-s² rotor inertia allows axes to accelerate quickly while limiting current spikes. Coil heat dissipates through a 2.0 °C/W thermal path, and the windings have a Class B temperature rating of 130 °C. An insulation resistance of 100 megohms helps protect the windings when microstepping drives operate at higher pulse rates.
The shaft supports 180 lb of axial thrust and a 35 lb radial load without shortening bearing life under normal operating conditions. Heat produced during static holding or rapid movement cycles dissipates through the aluminum case. The motor has a dielectric withstand voltage of 340 VDC, which helps protect the winding insulation from electrical stress. Continuous operation is permitted within a temperature range of -20 °C to +40 °C, allowing installation beside machinery without climate-controlled surroundings. Its compact housing and direct-coupling shaft make it suitable for conveyor diverters, carton formers, and small gantries that require quick, repeatable indexing.
