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High-performance inverter-duty motors handle low speeds without overheating, and withstand the PWM output of an inverter (VFD). These motors support variable speed applications such as machine tools and packaging/converting equipment. Certain models have encoder capability for use with vector VFDs.
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High Performance Inverter Duty
For demanding applications that require more than just simple ON/OFF motor operation, inverter-duty motors paired with VFDs can provide the variable speeds and constant torque needed. These motors are specifically designed to withstand high temperatures at low speeds and higher voltage spikes when used with VFDs.
- Sizes from fractional horsepower up to 100hp, depending on series
- U.S. MOTORS ACCU-Torq series motors provide constant torque operation and work well with any VFD
- Marathon motors pair perfectly with our DURApulse series AC drives
- Leeson washdown-rated motors in TENV enclosures
- WEG S series vector-duty motors combine perfectly with WEG CFW series VFDs
- Toshiba EQP Global SD series are an excellent choice for severe duty applications
For part listing and specifications, go to Shop Now
Leeson Compact High Performance Inverter Duty
Leeson compact high-performance inverter-duty motors are designed for demanding variable-speed applications requiring high torque and precise control. Built with premium insulation, wide speed capability, and flexible mounting configurations, they provide reliable, efficient performance across packaging, conveying, and OEM machinery environments.
- Designed as an AC motor replacement for PMDC motors when used with VFDs
- Wide speed range with constant torque and extended constant horsepower capability
- Compact design with C-face and removable base options for flexible installation
- Engineered for PWM/VFD operation with Class H insulation for durability
- Ideal for conveyors, packaging equipment, machine tools, and OEM systems
Starting at
(Y500)
Marathon microMAX™
Marathon microMAX motors are compact inverter-duty solutions designed to replace DC motors
in variable-speed applications. With high torque capability, high temperature-rated insulation,
and flexible mounting, they provide efficient and reliable performance in automation, packaging, and
light industrial systems requiring precise speed control.
- Excellent inverter-duty replacement for smaller-framed DC motors
- High torque at low speeds
- Compact footprint for tight spaces
- Optimized for VFD control
- Ideal for packaging, conveyors, automation
Starting at
(Y1999)
U.S. MOTORS ACCU-Torq Series with and without Encoder
U.S. Motors ACCU‑Torq motors deliver high-performance vector-duty operation for precise speed and torque control. Designed for demanding VFD applications, they offer extended constant torque ranges, encoder compatibility, and rugged construction, making them ideal for extrusion, processing, and material handling systems.
- Vector-duty design enables precise control
- Extended constant torque capability
- Encoder-ready configurations available
- Heavy-duty construction for industrial use
- Ideal for extruders, conveyors, and automation
Starting at
(UN14T2BC)
Leeson High Performance Inverter Duty with Integral Encoder
Leeson high-performance inverter-duty motors with integral encoder provide advanced inverter-duty performance with integrated feedback for precise motion control. Designed for demanding applications, they offer enhanced speed regulation, high torque output, and reliable operation in automation, material handling, and process systems.
- Integrated encoder for precision control
- High torque across wide speed ranges
- Designed for VFD/vector control systems
- TENV construction reduces dust ingress
- Ideal for automation, speed control, and positioning applications
Starting at
(Y280)
Leeson High-Performance Inverter Duty
Leeson high-performance inverter-duty motors are engineered for advanced variable-speed applications where consistent torque and precise control are critical. Built with heavy-duty construction, inverter-optimized windings, and flexible configuration options, they provide long-lasting, dependable performance across a wide range of industrial systems.
- Engineered for vector drive operation with accurate speed control
- Optional encoder capability supports closed-loop feedback applications
- Delivers strong, consistent torque throughout the speed range
- Rugged insulation system protects against heat and VFD-related stress
- Built for conveyors, processing equipment, material handling, and heavy industrial use
Starting at
(Y592)
Marathon Black Max®
Marathon Black Max family motors deliver high-performance inverter-duty and vector control capabilities. Designed for demanding applications requiring precise speed control and high torque, they feature robust construction, encoder compatibility, and advanced insulation systems for reliable operation under VFD control.
- Vector-duty design for precise control
- Encoder-mounted configurations available
- High torque at low speeds
- High temperature-rated insulation handles VFD output
- Designed for automation and heavy-duty processes
Starting at
(Y541A)
Leeson Washguard White Duck
Leeson Washguard White Duck motors are epoxy-painted washdown solutions designed for corrosive and hygienic environments. With sealed construction and TEFC design, they resist moisture, chemicals, and cleaning processes, offering reliable performance in food processing, packaging, and chemical applications without requiring stainless steel construction.
- Epoxy-coated housing resists corrosion
- TEFC enclosure protects against washdown exposure
- Cost-effective alternative to stainless steel
- Ideal for food and chemical environments
- Sealed bearings extend service life
Starting at
(113649.00)
Leeson PMAC
Leeson PMAC motors deliver advanced permanent magnet performance for variable-speed applications, offering higher efficiency and stronger torque output than traditional induction designs. With compact construction, low heat operation, and optimized VFD compatibility, they provide reliable, energy-saving performance in demanding applications.
- Higher efficiency than induction motors, especially at low speeds and partial loads
- Compact, high power-density design reduces size and weight requirements
- Designed exclusively for use with PMAC-compatible VFDs for optimal control
- Lower operating temperatures improve reliability and extend motor life
- Ideal for constant high-torque applications running at low speeds
Starting at
(SY001)
Marathon SyMAX® Permanent Magnet AC (PMAC)
SyMAX PMAC motors provide high-efficiency permanent magnet performance optimized for VFD-driven applications. Offering superior torque density, reduced losses, and compact design, these motors are ideal for automation systems requiring full torque from 0 to base speed and maximum energy savings.
- High efficiency vs. induction motors
- Compact, high-torque density design
- Optimized for VFD applications
- Reduced energy consumption in continuous duty
- Ideal for applications requiring minimal slip
Starting at
(SY067)
WEG S Series Vector Duty
WEG S vector-duty motors are engineered for high-performance VFD applications requiring precise torque and speed control. Built with robust construction and advanced insulation systems, they deliver reliable operation in heavy-duty industrial processes, including material handling, automation, and high-demand machinery.
- Vector-duty design for precise speed control
- Heavy-duty construction for industrial reliability
- Advanced insulation resists VFD voltage spikes
- Suitable for demanding process equipment
- Wide torque and speed range capability
Starting at
(.5018NT3FVD56C-S)
Toshiba EQP Global SD Series
Toshiba EQP Global SD motors are premium severe-duty solutions built for extreme industrial environments. Featuring robust cast-iron construction, high ingress protection, and inverter-duty capability, they deliver dependable performance in harsh conditions such as oil & gas, processing, and heavy manufacturing applications.
- Designed for global severe-duty applications
- Cast-iron frame withstands harsh conditions
- TEFC enclosure with high ingress protection (IP55)
- Inverter-duty capable for VFD applications
- Ideal for oil, gas, and heavy industry
Starting at
(0014SDSR41A-P)
