About Lafert
Lafert Industrial Electric Motor Solutions
Lafert brings 60 years of asynchronous motor engineering expertise to industrial and commercial applications worldwide. The Italian manufacturer specializes in squirrel-cage induction motors across multiple efficiency standards—IE1, IE2 (High Efficiency), IE3 (Premium Efficiency), and IE4 (Super Premium Efficiency)—each designed to meet current EU and international energy regulations while delivering reliable torque and thermal performance in demanding production environments.
Lafert's three-phase motor line spans frame sizes 56 to 160 (IEC dimensions) with output power from 0.75 kW to 22 kW, available in 2-pole, 4-pole, and 6-pole configurations for both 50 Hz and 60 Hz applications. Single-phase models are engineered for smaller production lines and standalone equipment, available in frame sizes 56 to 100 with power ratings from 0.09 kW to 2.2 kW, featuring aluminum construction, IP55 weather/dust protection, and simple foot-to-flange mounting conversion.
Lafert premium-efficiency motors (IE3/IE4) deliver substantial energy savings over standard IE1/IE2 models—particularly valuable in continuous-duty applications like pump drives, compressor motors, and conveyor systems where motor efficiency directly reduces operating costs over the motor's 15–20-year service life. These motors feature Class F insulation rated to 155°C, 1.15 service factor for overload tolerance, multiple voltage options (208–230/460V or 333/575V), and threaded-hole output shafts as standard, simplifying mounting and coupling alignment.
Construction features that define Lafert reliability include detachable feet for flexible mounting, simple foot-to-flange conversion without internal modifications, four cable-entry positions to accommodate different installation geometries, and access plates enabling straightforward winding inspection and maintenance. The squirrel-cage rotor design eliminates brush wear, reducing maintenance intervals and extending service life in harsh industrial environments.
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Frequently asked questions
What's the real difference in energy consumption between an IE2 and an IE3 Lafert motor over a year of continuous operation?
IE3 Premium Efficiency motors consume roughly 3–8% less electrical power than equivalent IE2 models under full-load continuous duty, meaning a 22 kW pump or compressor motor running 8000 hours annually can save 1700–3000 kWh per year depending on efficiency curve and load profile. At industrial electricity rates ($0.08–$0.12/kWh), this translates to $136–$360 annual savings, typically recovering the IE3 motor's higher upfront cost in 2–4 years.
Can I mount a Lafert motor from foot to flange without buying a completely new unit?
Yes—Lafert motors are designed with simple foot-to-flange conversion capability: the detachable feet are removed and the motor is bolted directly to a flange adapter or pump coupling without internal modifications. This modularity lets maintenance teams adapt motors to different mounting configurations (wall-mount to vertical-pump-flange, for example) without replacement, extending motor life across equipment re-purposing projects.
What does IP55 protection mean for a Lafert single-phase motor, and is it suitable for outdoor or washdown environments?
IP55 means the motor is protected against low-pressure water jets from any direction (excellent for washdown) and dust ingress to the windings, making it safe for humid, outdoor, or food-processing environments. However, IP55 is not fully submersible; it cannot handle high-pressure steam or continuous water immersion. For full IP66/IP67 washdown-rated duty, specialist sealed or totally-enclosed fan-cooled (TEFC) motor variants are available.
Does Lafert offer variable-frequency-drive (VFD) compatible motors, and if so, what extra insulation or cooling do they require?
Standard Lafert squirrel-cage motors can be used with VFDs, but running at variable frequency imposes stress on the winding insulation due to VFD switching frequencies and voltage transients. Lafert offers Premium Efficiency (IE3/IE4) models with Class F insulation (155°C rating) and reinforced stator windings designed explicitly for VFD duty; these are marked as VFD-compatible in technical specs and include improved bearing insulation to prevent voltage-induced bearing damage.
What is the typical service factor and thermal capacity of Lafert IE3 motors under intermittent versus continuous load?
Lafert premium motors carry a 1.15 service factor, meaning they can handle 15% continuous overload (e.g., a 22 kW motor rated for 25.3 kW momentary demand) without exceeding thermal limits. For continuous intermittent duty (50–75% of the motor's rated power), thermal shutdown is rarely triggered, but for continuous full-load operation, proper ventilation and ambient temperature control (below 40°C if possible) ensure the motor stays within Class F insulation limits across its 15–20-year lifespan.