The AIR 250 electric motors represent the most widespread line of three-phase asynchronous units of the unified series with compliance of power and overall dimensions with the conditions of standardization.
Application
The AIR 250 series electric motors are used in many industries to provide a complete set of electric drives for various machines and mechanisms (lifting and unloading, pumping, ventilation, construction and other units) that require high power and a low-speed drive.
Device
Asynchronous motors of the AIR 250 are distinguished by the simplicity of the device, which is based on a rotary mechanism rotating under the influence of a magnetic field in a stator shell. To create a magnetic field, a copper winding is used, which fits into the provided slots in phases at a certain angle.
The external housing of electric motors can be made using cast iron or a combined version: an aluminum alloy can be used for the base frame, and the body shields have a cast-iron structure.
Features
Like most AIR electric motors, the 250 series models are designed to operate in the long-term S1 mode without significant temperature fluctuations.
The bearing system used in the mechanism significantly reduces the noise load, and the precise adjustment of all components allows you to bring the efficiency up to 90%.
This series is characterized by high dust and moisture resistance, as evidenced by the IP55 tolerance.
Modifications
A wide range of AIR 250 electric motors is represented by 8 models, which differ in power, number of poles and, accordingly, rotation speed. Also, these modifications are divided into two groups according to their overall dimensions: representatives of the AIR 250S series are made on a short frame (925mm), and AIR 250M – on a medium-sized 965-millimeter. The width and height parameters correspond to 630x545mm. The entire range is represented by models:
- AIR 250 S2 with a capacity of 75kW, 3000 rpm and a weight of 475kg;
- AIR 250 M4 with a capacity of 90kW, 3000 rpm and a weight of 505kg;
- AIR 250 S4 with a capacity of 75kW, 1500 rpm and a weight of 480kg;
- AIR 250 M4 with a capacity of 90kW, 1500 rpm and a weight of 515kg;
- AIR 250 S6 with a capacity of 45kW, 1000 rpm and a weight of 430kg;
- AIR 250 M6 with a capacity of 55kW, 1000 rpm and a weight of 450kg;
- AIR 250 S8 with a capacity of 37kW, 750 rpm and a weight of 430kg;
- Air 250 M8 with a capacity of 45kW, 750 rpm and a weight of 460kg.
Paws with bearing shields, the same paws with a flange on the shaft side or a single flange mechanism can be used to install the engines in a regular working position. You can buy such a powerful electric motor from us, all modifications are available.