Toshiba Severe Duty motors include the EQP Global SD series and the EQP Global 841 series built with heavy cast-iron construction, IP55/IP56 sealing, inverter-duty design and oversized 300-series bearings for long life. ESR Motor Systems stocks a broad selection in 460 V and 575 V models with dual 50/60 Hz nameplates for drop-in replacements and fast shipment. These models are known for robust contamination resistance and low vibration, making them ideal for demanding mill and chemical applications. Learn More >

U.S. MOTORS® Severe Duty includes the CORRO-DUTY® and 841 PLUS® series, engineered for harsh processing environments; 841 PLUS is built to meet stringent IEEE 841 requirements and is rated NEMA Premium efficient for cooler, longer-lasting operation. CORRO-DUTY features rugged, all-cast-iron construction with corrosion-resistant finishes and is widely used in pulp and paper, chemical, wastewater, mining, and oil and gas applications. ESR Motor Systems is a leading U.S. MOTORS distributor and stocks a variety of Severe Duty models—including common CORRO-DUTY ratings from 1 to 400 HP—for fast availability and support. Learn More >

ABB Baldor-Reliance Severe Duty motors are built for harsh processing environments, offering rugged cast-iron construction, superior contamination and moisture protection, and premium efficiency performance that drives down energy costs. With series like XT, XEX Super-E, SP4 NEMA Super Premium, and IEEE 841, these motors stand out for their durability, built-in condition monitoring, and long service life in demanding industrial settings. ESR supports these offerings with reliable access to inventory and expedited sourcing through ABB’s distribution network, making it easier for maintenance professionals to secure the right motor for critical applications. Learn More >

Marathon’s severe duty lineup focuses on the XRI Severe Duty and XRI IEEE-841 “Blue Chip” series, both built with rugged 100% cast-iron frames, MAX GUARD Class H insulation, NEMA Premium efficiencies and inverter-duty ratings. These totally enclosed fan-cooled motors cover a wide power range—typically from 1 HP through 600 HP—and are engineered for heavy-duty environments such as chemical plants, paper mills, refineries, mines, food processing and foundries. ESR Motor Systems offers full access to Marathon’s Severe Duty and IEEE-841 motors, backed by a nationwide warehouse network and online tools that help you secure the right motor quickly and at competitive lead times. Learn More >

LEESON severe duty motors include the IEEE 841 Premium Efficient series for process industries and the heavy-service Crusher Duty series, both engineered with cast-iron construction for harsh environments. ESR Motor Systems supplies a broad selection of LEESON severe duty models with NEMA Premium efficiency and inverter-ready designs, and we leverage Regal’s U.S. stocking warehouses for fast delivery. Crusher Duty options such as roller bearings, 4140 shafts, dual shaft seals, and epoxy paint make these motors a reliable choice for high-shock and belted applications, while IEEE 841 units are built for long life in refineries, mines, pulp and paper, and similar facilities. Learn More >