ST3640-3445-48HC by Pacific Scientific

The Pacific Scientific ST3640-3445-48HC motor is a robust member of the Permanent Magnet DC Motors series, specifically engineered for industrial automation and precision control. This unit delivers a continuous torque of 18 lb-in while operating on a 115 V DC power supply, making it well-suited to a variety of machinery and process control systems. With a nominal power output of 1/2 HP and a continuous speed rating of 1800 RPM, the ST3640-3445-48HC achieves reliable performance under sustained load conditions. Its permanent magnet field design eliminates separate field windings, contributing to a more compact form factor and improved energy efficiency. The motor’s TENV (Totally Enclosed Non-Ventilated) enclosure protects critical internal components from dust and debris, ensuring long-term reliability.

The detailed technical specifications of the ST3640-3445-48HC highlight its suitability for demanding industrial environments. The motor’s current rating of 4.5 A and torque constant of 4 lb-in/A guarantee predictable torque response and straightforward drive tuning. It features large sealed bearings to minimize friction and maintenance intervals, combined with a rugged fused commutator that resists wear under continuous operation. The unit complies with the NEMA 56C standard and offers both NEMA and Metric mounting options for seamless integration into existing systems. Additional critical parameters include a form factor of 1.4, insulation class H, and an ambient temperature range of -15°C to +25°C, which ensure thermal resilience and reliable operation across varied plant conditions.

Operational performance of the ST3640-3445-48HC is enhanced by its design emphasis on efficiency and durability. The permanent magnet field type provides stable electromagnetic characteristics, reducing the need for ancillary cooling methods. With a weight of 22 lbs, this motor balances structural robustness with manageable mass for easier handling and installation. The TENV enclosure and sealed bearing arrangement extend service life by excluding contaminants, while the Class H insulation system allows for high-duty-cycle operation without degradation. The fusion of reliable torque delivery, consistent speed regulation, and minimal maintenance requirements positions this motor as a cost-effective solution for continuous industrial use.

System integration is simplified through the motor’s standard electrical interface and adjustable mounting configurations, facilitating compatibility with DC drives, controllers, and power electronics commonly used in industrial automation. Its predictable performance makes it ideal for conveyor systems, material handling, machine tools, and packaging equipment, where precise speed and torque control are essential. The combination of Pacific Scientific engineering, the proven ST Series platform, and the ST3640-3445-48HC’s rugged construction ensure high availability and low lifecycle costs, supporting industrial applications that demand both reliability and repeatable performance.