Product Description:

The E33NRFS-LNN-NS-02 is a hybrid stepper motor manufactured by Kollmorgen for the E Hybrid Stepper Motors series. It is used in feeders, small gantries, and indexing tables where controllers issue pulse-and-direction commands for discrete, open-loop positioning. By converting each command pulse into a fixed angular increment, the unit delivers repeatable motion without an external feedback device. This open-loop design also reduces the amount of machine wiring required for motion control.

With a frame size of NEMA 34, this motor advances exactly 1.8 degrees per full step, creating 200 uniform positions per shaft revolution. Positional deviation is limited to ± 1.5 %, supporting consistent movement during repeated indexing cycles. The winding insulation is rated Class B at 130 °C, allowing it to withstand elevated thermal loads during high-current operation. Kollmorgen’s SIGMAX construction uses a laminated rotor and three electromagnetic stacks to increase torque density while controlling detent ripple. A smooth shaft transmits torque without the concentrated stress associated with a keyway. The standard eight-lead wire connection permits series or parallel phase wiring to match the electrical characteristics of the connected drive.

Electrical endurance is supported by an insulation withstand rating of 340 VDC and a cold insulation resistance of 100 megohms. The motor operates at ambient temperatures from −20 °C to +40 °C while maintaining magnetic alignment throughout that range. A body diameter of 3.38 inches pairs with an overall length of 5.06 inches, allowing the motor to fit within compact machine frames. The NEMA mounting interface has a 3.875-inch bolt circle and a 2.875-inch pilot, which centers the housing accurately on compatible gearboxes or end plates. Its smooth output shaft is suitable for clamping couplings that do not require a keyed connection. The regular lead-wire arrangement also provides flexible phase connection options without requiring changes to the motor housing.