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LEESON

LEESON is a manufacturer of electric motors and related components, with a product history dating back to 1972. The brand is part of the Regal Rexnord family of motor and power transmission brands. LEESON's catalog covers AC and DC motors, gearmotors, and replacement parts, with a focus on general-purpose and application-specific designs for industrial use. 3G Electric supplies LEESON motors and components globally, serving plant engineers, maintenance managers, and procurement specialists who need to specify or replace motors in existing equipment.

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About LEESON

LEESON is a manufacturer of electric motors and related components, with a product history dating back to 1972. The brand is part of the Regal Rexnord family of motor and power transmission brands. LEESON's catalog covers AC and DC motors, gearmotors, and replacement parts, with a focus on general-purpose and application-specific designs for industrial use. 3G Electric supplies LEESON motors and components globally, serving plant engineers, maintenance managers, and procurement specialists who need to specify or replace motors in existing equipment.

The LEESON line includes 3-phase AC general-purpose motors in both NEMA and IEC metric configurations. Common enclosure types include totally enclosed fan cooled (TEFC) and open drip proof (ODP). Mounting options include rigid base, C-face with rigid base, and C-face only. Horsepower ratings in the general-purpose range span fractional to several hundred horsepower, with speed options such as 3,450 RPM, 1,750 RPM, and 1,150 RPM at 60 Hz. Voltage ratings include 230/460V, 575V, and other common industrial voltages. IEC metric motors are available in frame sizes such as 71 and 80, with metric mounting dimensions for equipment designed to IEC standards. LEESON also produces DC motors, washdown-duty motors, explosion-proof motors, and inverter-duty motors for variable-frequency drive operation.

Beyond complete motors, LEESON supplies replacement parts such as carbon brushes. Motor brushes transfer electrical current between stationary and rotating parts in DC motors and certain AC motor designs. Replacement brushes are matched to specific motor series or models to maintain commutation performance. 3G Electric stocks LEESON motor brushes and other components to support maintenance and repair of installed LEESON equipment.

Technical buyers specifying LEESON motors typically evaluate enclosure type, mounting configuration, frame size, horsepower, speed, voltage, and full load current. TEFC enclosures are used in dusty or damp environments where internal components need protection from contaminants. C-face mounts allow direct coupling to pumps, gear reducers, and other driven equipment without a separate mounting bracket. Rigid base mounts provide a stable footprint for belt-driven or direct-coupled applications. IEC metric motors are specified when the equipment uses metric mounting dimensions, common in imported machinery or projects following IEC standards.

3G Electric supports the LEESON line by maintaining inventory of general-purpose AC motors, IEC metric motors, and replacement brushes. The product data provided for each SKU includes manufacturer part number, enclosure type, mounting, frame size, horsepower, RPM, voltage, full load current, and weight. This allows buyers to cross-reference existing nameplate data and select a compatible replacement. For procurement, 3G Electric provides global shipping and handles orders for single replacement units as well as larger quantities for planned maintenance or new installations. The LEESON brand is known for standardized mounting dimensions and electrical ratings that simplify replacement across different equipment makes. When a motor fails, matching the frame size, mounting, and electrical characteristics is critical to minimizing downtime. 3G Electric's catalog includes LEESON motors with common industrial ratings, such as 1 hp to 2 hp at 1,750 RPM or 3,450 RPM, in 230/460V and 575V configurations. These ratings cover many pumps, fans, conveyors, and compressors found in manufacturing and process industries.

Common Applications

  • Pumps and compressors — LEESON C-face with rigid base motors such as 121179.00 (1 hp, 1,760 RPM) for direct coupling.
  • Conveyors and material handling — LEESON TEFC general-purpose motors like 121181.00 (2 hp, 1,745 RPM) for continuous duty.
  • Fans and blowers — LEESON IEC metric motors such as 080T34FH5303 (1 1/2 hp, 3,450 RPM) for high-speed air movement.
  • Imported machinery — LEESON IEC metric frame 71 motors like 071T17FH5508 (1/2 hp, 1,695 RPM) for drop-in replacement.
  • DC motor maintenance — LEESON replacement brushes such as 900015.18 for restoring commutation in DC motors.
  • Process equipment — LEESON 3-phase motors rated 230/460V AC for industrial machinery requiring dual-voltage capability.

Frequently asked questions

Common questions about LEESON from 3G Electric.

What is the difference between LEESON IEC metric motors and NEMA motors?

LEESON IEC metric motors use mounting dimensions and frame sizes defined by IEC standards, such as frame 71 or 80, with metric shaft and bolt dimensions. NEMA motors use inch-based dimensions and NEMA frame sizes. IEC motors are specified when equipment is built to metric standards or when replacing a motor on imported machinery. Electrical ratings may be similar, but mounting compatibility differs. Always verify frame size, mounting type, and shaft dimensions when cross-referencing.

How do I select a replacement LEESON motor brush?

Replacement LEESON motor brushes, such as the 900015.18, are matched to specific motor series or models. To select the correct brush, identify the motor's manufacturer part number or nameplate data, then cross-reference to the brush part number. Brush dimensions, grade, and terminal configuration must match the original. Using an incorrect brush can cause excessive wear, arcing, or commutator damage. Consult the motor manual or contact 3G Electric with the motor model number for assistance.

What does TEFC mean on a LEESON motor?

TEFC stands for totally enclosed fan cooled. A TEFC motor has a sealed enclosure that prevents dust, dirt, and moisture from entering the internal components. An external fan blows air over the enclosure to dissipate heat. TEFC motors are suitable for indoor and outdoor industrial environments where contamination is a concern. They are not submersible. LEESON offers TEFC enclosures on many general-purpose and IEC metric motors, including the 1 1/2 hp 080T34FH5303 and the 1/2 hp 071T17FH5508.

Can LEESON C-face motors be mounted in any orientation?

LEESON C-face motors with a rigid base are designed for mounting with the base bolted to a horizontal surface, which sets the shaft orientation. C-face only motors can be mounted in various orientations as long as the driven equipment supports the motor and proper lubrication and cooling are maintained. For C-face with rigid base models, the base provides additional support and alignment. Always follow the motor's installation instructions regarding mounting position and drain hole locations for TEFC enclosures.

What voltage options are available for LEESON general-purpose AC motors?

LEESON general-purpose 3-phase AC motors are commonly available in 230/460V AC, 575V AC, and other voltages at 60 Hz. Some models are dual-rated for 50/60 Hz operation. For example, the 1 hp 121179.00 is rated 230/460V at 60 Hz, while the 1 1/2 hp 080T34FH5303 is rated 575V at 60 Hz. Voltage selection depends on the available power supply and the motor's nameplate rating. Always match the motor voltage to the supply and control equipment.

What is the full load current of a 2 hp LEESON motor?

Full load current varies with voltage, speed, and motor design. For example, the LEESON 2 hp 121181.00 at 1,745 RPM draws 2.0 A at 230/460V AC. The 2 hp 121673.00 at 3,490 RPM draws 2.4 A at 230/460V AC. These values are for 60 Hz operation. Always refer to the motor nameplate for the exact full load current, as it determines branch circuit and overload protection sizing.