Ask which motor type appears most often in industry and the answer is usually the asynchronous motor. Running on alternating current (AC), these motors have no brushes or commutator; that simple construction makes them a low-failure, easy-to-maintain workhorse. At HEM Motor we manufacture asynchronous motors in our own facility and deliver from stock, offering both single-phase and three-phase models across a wide power and speed range.
The operating principle is simple yet robust: the rotating magnetic field in the stator induces current in the rotor and torque is born. Because the rotor turns slightly slower than this field, the resulting gap is called slip; near full load this is about 4% in our motors. Built with IP55 protection and Class F insulation, they suit speed and torque control via an inverter.
With the right protection relay and thermal setting, an asynchronous motor serves trouble-free for many years. If you seek higher efficiency, see our IE4 and IE5 series. For model selection at the right power and speed, current stock and a quote, call +90 (532) 345 49 86 or reach us via our contact page.
When choosing an asynchronous motor to drive a high-inertia load, there is one parameter most purchasing decisions overlook: the load moment of inertia J (kgm²). A large fan impell... More Details
The efficiency value (%) written on the nameplate of an asynchronous motor shows the best point reached at full load. But in real plants motors rarely run at full load; most of the... More Details
The power stated on an asynchronous motor's nameplate assumes a balanced (symmetrical) three-phase supply. In a real grid, however, the voltages of the three phases are often not e... More Details
The most reliable way to know whether an asynchronous motor can drive a load correctly is to read the motor's speed-torque (M-n) curve. This curve shows how much torque the motor p... More Details
At the top of the causes of burnout in three-phase asynchronous motors is an insidious fault that often develops unnoticed: single phasing (phase loss). The interruption of one of ... More Details
Star-delta starting is one of the most common methods for reducing starting current in medium and large asynchronous motors. However, the success of this method often depends on a ... More Details
When you start an asynchronous motor, at the first instant it draws a current from the grid far above the rated current; this inrush (starting) current rapidly heats the winding un... More Details
The frequency drive (VFD) is the most common way to adjust the speed of an asynchronous motor, and it delivers major energy savings in applications such as pumps, fans and conveyor... More Details
For most applications, an asynchronous motor coasting to a stop on its own after being disconnected from the grid is sufficient. But high-inertia loads (cranes, saws, centrifuges, ... More Details
When buying an asynchronous motor, one of the quantities most facilities overlook, yet which causes the most trouble in the field, is the starting current. At the first instant of ... More Details
When buying an asynchronous motor, most businesses carefully study the power (kW) and efficiency class (IE3/IE4) but overlook the "cos phi" value on the nameplate. Yet the power fa... More Details
When buying an asynchronous motor, the labels "insulation class: F" and "temperature rise: B (80K)" on the nameplate tell you far more than the rated power figure. These two values... More Details
The cylindrical capacitor you see when you open the black box of a single-phase motor is really the heart of that motor. A single-phase supply needs this capacitor for the motor to... More Details
The asynchronous motor is the most widely used drive element in industry, and most of its reliability depends on a part almost no user ever sees: the squirrel-cage rotor. When the ... More Details
OSB, MDF and chipboard production and wood drying kilns are demanding industrial environments where high temperature, fine dust and continuous operation come together. In these pla... More Details
In high-power facilities, electric motor selection is not limited to kW alone; the voltage selection is at least as decisive as the power. A 690V asynchronous motor offers a seriou... More Details
Most motors in industry run at 2 and 4 poles at high and medium speed; however, some applications demand low speed and high torque. This is exactly where 6-pole (about 1000 rpm) an... More Details
2.2 kW, 3 kW and 4 kW are perhaps the three most commonly used asynchronous motor powers in Turkish industry. Conveyors, small-to-medium pumps, fans, mixers, geared drives and coun... More Details
In workshops, small machines and household-type agricultural equipment where there is single-phase (220V) supply, the right solution is most often a single-phase asynchronous motor... More Details
One of the most costly decisions encountered when supplying a motor for a facility is whether a standard asynchronous motor is sufficient. In environments carrying the risk of expl... More Details
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