Product Description:

The T22NRHJ-LNN-NS-00 is a two-phase hybrid stepper motor produced by Pacific Scientific as part of the T High Torque Motors series. By advancing one discrete increment with each command pulse, the unit supplies controlled rotary motion for indexing tables, small conveyors, or valve actuators. The motor fits within a 56.9 mm frame class, so it can be mounted in compact machinery where consistent torque and repeatable positioning are required. Its step-based operating method also makes it well suited for systems that rely on predictable start-and-stop movement rather than continuous high-speed rotation.

The motor draws 4.1 A DC per phase from the drive, and with two phases energized, that current flows through a winding resistance of 0.49 ohms, which influences heat generation and drive selection. Its winding inductance of 2.5 mH affects how quickly phase current can rise, so a chopper drive is typically used to maintain useful torque as step rates increase. Once fully energized, the rotor can resist back-driving with a static holding capacity of 1.98 N-m, while the smaller detent torque of 0.042 N-m remains present when the coils are not powered and reflects the rotor's magnetic cogging. The 77.7 mm body length, combined with the 6.35 mm shaft diameter and a 20.6 mm shaft extension, gives the motor a compact package for direct coupling to light mechanical loads.

With a rotor inertia of 0.0000395 kg·m², the motor can change speed quickly without placing excessive acceleration demand on the load. The design supports radial side loading up to 67 N and axial thrust up to 111 N, allowing the shaft to work with belts, pinions, or lead screws without requiring separate support hardware in many compact assemblies. Each step produces a 1.8° rotation, creating 200 full-step positions per revolution for moderate positioning resolution in open-loop motion systems. With a mass of 1 kg, the unit can also be mounted on moving carriages where low moving weight and repeatable response are important.