MTDE31NR-HTLDN-M350 by Pacific Scientific

The MTDE31NR-HTLDN-M350 is a high-performance step motor from Pacific Scientific in the POWERMAX II M Motors series, designed for demanding industrial automation environments. Featuring a NEMA 34 frame and a straight shaft configuration, it delivers reliable mechanical power in a compact footprint. The motor offers a holding torque of 344 oz-in (2.43 Nm) and operates with a rated current per phase of 8.4 amps DC, ensuring robust torque output under load. Engineered for durability, it withstands a temperature limit of 130°C winding temperature, making it suitable for continuous operation in harsh settings. Provision for encoder mounting enhances feedback options for precision control.

Technical capabilities of the MTDE31NR-HTLDN-M350 include a General Purpose - Conventional Hybrid (NEMA 34) motor type paired with a versatile Series/Parallel Configurable connection. The motor’s phase inductance of 0.13 mH and phase resistance of 8.4 ohms are optimized for fast current rise and precise current regulation. A minimal detent torque of 1.1 oz-in ensures low cogging and smooth idle behavior, while the dual two rotor stacks configuration provides enhanced torque density. The standard straight shaft output eases coupling to gearboxes or pulleys, and the NEMA 34 flange simplifies installation into standardized mounts. This robust design supports both unipolar and bipolar control modes through its 8-lead wiring scheme, enabling flexible drive topologies.

Operational features of this step motor deliver tangible benefits in automation systems. A temperature limit of 130°C for the winding maintains thermal stability, and the motor’s construction in a maroon-finished durable metal housing provides industrial-grade protection. With an encoder mounting option included, users can install rotary encoders directly on the rear shaft for precise position feedback without additional adaptors. The modest detent torque of 1.1 oz-in offers low idle friction for improved responsiveness during microstepping, while the holding torque of 344 oz-in secures static loads reliably. Its configurable series/parallel connection allows tuning of current draw versus torque output to match specific drive electronics and power budgets.

Integration of the MTDE31NR-HTLDN-M350 into complex machinery is straightforward. The standard NEMA 34 frame ensures compatibility with existing mounts and gearbox interfaces, and the straight shaft with encoder provision supports both mechanical coupling and feedback devices seamlessly. Ideal for CNC machines, pick-and-place systems, conveyor drives, and robotic actuators, this motor integrates directly with popular stepper drives and controllers. Its combination of high torque, precise control options, and rugged temperature tolerance makes it a versatile choice for a wide range of industrial automation applications.