Quarry Duty Motors
Industrial Quarry Motors Built to Last
Engineered for Continuous Operation in Demanding Aggregate Applications
Quarry Duty motors, also known as Crusher Duty motors, are built to handle the extreme demands of aggregate, mining, and material handling applications. Designed with oversized bearings, reinforced shafts, and high starting torque, these motors excel in crushers, conveyors, feeders, and other heavy-duty quarry equipment. Unlike standard industrial motors, Quarry Duty models are engineered for high radial loads and continuous operation in harsh, dusty environments. ESR Motor Systems stocks a wide range of 4- and 6-pole Quarry Duty motors up to 500 HP for reliable, rugged performance in every application.
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Toshiba’s EQP Global QD Quarry Duty motors are designed specifically for the strenuous demands of mining, aggregate, and cement environments, offering high starting and breakdown torque, durable cast-iron construction, oversized superior-grade roller bearings, and rugged high-strength 4142 steel shafts for exceptional reliability in harsh service. ESR Motor Systems is a key distributor of Toshiba’s Quarry Duty lineup and maintains a strong inventory of the EQP Global QD series, available in common configurations ranging from roughly 5 to 750 horsepower in both 460 and 575 volt 60 Hz versions. You can count on Toshiba’s offerings for inverter-duty performance that exceeds standard vibration specifications, providing the heavy-industrial strength needed to keep conveyors, crushers, screens and pumps operating dependably. Learn More >
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ABB Baldor-Reliance Quarry Duty motors are offered in the M and EM “Design C” rolled-steel series, built for high-torque starts on conveyors and gear reducers, with TEFC construction, IP55 protection, gasketed conduit box, Class F insulation with B rise, 1.15 service factor, shaft slingers, and regreasable bearings. These Design C models cover 2 to 75 hp depending on frame and catalog number, a range well suited to aggregate, cement, and bulk-handling applications. ESR Motor Systems offers Baldor-Reliance Quarry Duty models such as EM3611T-9 from stock and can source the broader lineup quickly for your project needs. Learn More >
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Leeson’s Quarry Duty motors from the Lincoln Crusher Duty series bring rugged performance designed for aggregate and quarry environments, offering 100 to 400 HP at 460 V in both cast-iron and rolled-steel enclosures. These motors feature a drive-end roller bearing ideal for heavy belted loads, a high-strength steel shaft, and optimized speed-torque curves for demanding starting loads. ESR provides rapid access to these Lincoln Quarry Duty offerings, keeping stock nearby to support fast delivery and easy specification. What truly distinguishes this line is its dedicated crusher duty engineering—purpose-built for quarry duty resilience and reliability in harsh material-handling applications. Learn More >
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