FAQ

Single-phase motors are powered from a 220–230 V single-phase supply and are generally preferred for low-power applications up to 2.2 kW, such as small pumps, compressors and household equipment. Three-phase motors are powered from a 380–400 V three-phase supply; producing continuous and balanced torque, they are ideal for industrial applications requiring high power.

Difference in operating principle

When three voltages displaced by 120° are applied to a three-phase winding, they create a magnetic field that rotates by itself inside the stator. That is why a three-phase induction motor starts without any extra device. On a single-phase supply, the field only pulsates and does not rotate on its own, so the motor needs an auxiliary winding plus a capacitor (start and/or run capacitor) or a centrifugal switch in order to start. These additional parts are also potential points of failure.

Performance and practical comparison

• Torque: three-phase motors deliver smooth, balanced torque; single-phase torque pulsates, which shows up as more vibration and noise.
• Efficiency and life: at the same power, three-phase motors are more efficient, quieter and longer-lasting, and usually have a smaller frame size.
• Current: for the same output, a single-phase motor draws a higher line current, so cable cross-section and fuses must be sized accordingly.
• Control: three-phase motors are easily controlled with star-delta starters, soft starters and frequency inverters.

Which one should you choose?

For homes, small workshops or rural sites without a three-phase connection, a single-phase motor is a practical solution at low power. In factories and for machines running continuously, a three-phase motor is the better choice in every respect. For this reason, DRG Motor's industrial range mainly consists of three-phase asynchronous motors, while single-phase motors are also part of the range.

To find the right motor for your supply and load, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

IE (International Efficiency) classes indicate a motor's energy-efficiency level according to the IEC 60034-30-1 standard. IE4 stands for "super premium" and IE5 for "ultra premium" efficiency; IE5 is the highest class defined today. A higher IE class simply means the motor does the same work with less electricity.

How are IE classes defined?

IEC 60034-30-1 sets efficiency classes for single- and three-phase induction motors supplied directly from the grid, with separate limits depending on rated power, number of poles and frequency. The classes are ranked as follows:

• IE1 – Standard efficiency
• IE2 – High efficiency
• IE3 – Premium efficiency
• IE4 – Super premium efficiency
• IE5 – Ultra premium efficiency

Each higher class is achieved by noticeably reducing the motor's losses (copper, iron, friction and windage losses) compared with the class below. Efficiency values are determined with the test methods described in IEC 60034-2-1, so motors from different manufacturers can be compared on the same basis.

How do IE4 and IE5 motors achieve higher efficiency?

More and better copper, low-loss electrical steel, optimised rotor and fan design and tight manufacturing tolerances all reduce losses. The IE5 level is mostly reached with permanent-magnet or synchronous reluctance technology, and such motors are usually operated together with a frequency inverter.

Impact on your operation

A higher efficiency class lowers operating costs, reduces environmental impact and makes compliance with the European Union Ecodesign regulations easier. The difference becomes clear on pumps, fans and compressors that run for long hours. DRG Motor supplies high-efficiency motors from IE3 to IE5.

To choose the right efficiency class for your application, reach us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

In stone crushing and screening plants, motor selection is based on the crusher's capacity, the hardness of the processed material and the need for continuous 24/7 operation. High starting torque, resistance to impact and vibration, and a robust frame are critically important in these applications.

Technical criteria for selection

• Power (kW): start from the power recommended by the crusher manufacturer and leave a reasonable margin for variations in material hardness and feed rate.
• Speed: crushers are usually driven by 4- or 6-pole motors through belts and pulleys; the pulley ratio is calculated from the required crusher shaft speed.
• Starting torque: since the crusher may have to start loaded, the motor's starting torque and the starting method (star-delta, soft starter, inverter) should be assessed together.
• Duty type: continuous operation is based on the S1 duty cycle.

Environment and mechanical strength

Crushing plants operate in heavy dust, outdoors, under sun and rain. That makes at least IP55 protection, class F insulation and a sturdy housing essential. A cast iron frame dampens shock and vibration well. Belt tension puts a radial load on the bearings, so the shaft and bearing arrangement must also be considered, and the fan cover and cooling fins should be cleaned regularly to prevent dust build-up.

The DRG Motor approach

DRG Motor's cast iron-bodied, IP55-protected and class F insulated motors are designed to withstand the demanding conditions of crusher applications. Vibration motors for screens are also part of the range. If you share the crusher type, pulley diameters and capacity, we can work out the right power and speed together.

For a quotation for your plant, write to us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Maintenance intervals depend on the motor type, power and operating conditions. In general, bearing lubrication, checks of the electrical connections and terminal box, cleaning of the housing and vibration monitoring should be carried out every 6–12 months. In dusty, humid or hot environments, this interval should be shortened.

Periodic checklist

• Visual inspection: remove dust, oil and dirt from the fan cover, cooling fins and housing; nothing should obstruct the airflow.
• Bearings: monitor noise, temperature and vibration. On motors with grease nipples, add the type and amount of grease stated on the plate or in the catalogue; sealed, lubricated-for-life bearings are not regreased but replaced when necessary.
• Electrical connections: check terminal tightness, cable insulation, and the sealing of gaskets and cable glands.
• Insulation resistance: measure the winding insulation with a megohmmeter on motors that have been idle for a long time or work in damp areas.
• Current and voltage: confirm that phase currents are balanced and within the nameplate values.

Too much or too little grease

Bearing failures are among the most frequent causes of electric motor breakdowns. Insufficient lubrication leads to wear, while excess grease makes the bearing run hot. Rather than assuming "more is better", follow the specified interval and quantity, and never mix different grease types.

The value of predictive maintenance

Vibration measurement (assessed to ISO 10816 / ISO 20816), thermal imaging and current analysis help detect problems before they turn into failures. Regular maintenance extends motor life and prevents unexpected stoppages, and high-efficiency, quality motors require less maintenance, lowering the total cost of ownership.

For a maintenance plan or replacement needs, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Overheating is prevented by correctly sizing the motor, providing adequate ventilation, carrying out regular maintenance and keeping operating conditions suitable. Overloading, low or unbalanced voltage, a blocked fan cover and insufficient cooling are the main causes.

Common causes of overheating

• Overload: when the motor runs above its rated current, winding losses rise with the square of the current.
• Voltage problems: low voltage increases current, and even a small imbalance between phases causes disproportionate heating in the windings. Loss of a phase is the most dangerous case.
• Poor cooling: standard enclosed motors are cooled by method IC411, meaning a shaft-mounted external fan blows air over the frame. Dust-covered fins, a clogged fan cover or a cramped installation interrupt that airflow.
• Frequent starts and stops: each start draws several times the rated current; starting more often than the duty type allows makes heat accumulate.
• Low-speed inverter operation: a shaft-mounted fan cools less as it slows down, so a separately driven (forced) fan should be considered for long periods at low speed.

Insulation class and thermal margin

Class F insulation means the winding system withstands up to 155 °C. In practice, running a motor with a class B temperature rise leaves a useful safety margin for the insulation. As a rule of thumb, every sustained 10 °C rise in winding temperature roughly halves insulation life.

Protective measures

A correctly set motor protection breaker or thermal overload relay, PTC thermistors embedded in the windings and a phase-failure relay safeguard the motor. DRG Motor's class F, IP55-protected motors offer high temperature resistance, and in critical applications thermal protection and a frequency inverter add further protection.

If one of your motors is running hot, ask for technical support on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

DRG Motor products are used across a wide range of sectors, including mining, construction, stone crushing and screening plants, manufacturing, pump and fan systems, food, textiles, ventilation and automation. A power range from 0.55 kW to 355 kW offers a suitable solution for almost every industrial application.

Product groups and typical uses

• General-purpose industrial motors: the core drive needs of production lines, such as conveyors, mixers, gearbox drives, machine tools and packaging machines.
• Stone crushing plant motors: heavy-duty crushers that require high starting torque and resistance to shock and vibration.
• Vibration motors: screens, feeders, and silo and hopper discharge systems.
• Pump and fan motors: irrigation, water supply, treatment, industrial ventilation and air-conditioning systems.
• Smoke extraction motors: fan systems that remove smoke from buildings and facilities in the event of fire.
• Single-phase motors: workshops and small-scale applications where no three-phase supply is available.

Requirements that differ by sector

Mining and construction call for mechanical strength and dust protection, food and textiles for easy cleaning and continuous duty, and pump and fan applications for energy efficiency. In variable-flow systems, IE3, IE4 and IE5 motors combined with a frequency inverter deliver substantial energy savings. Cast iron and aluminium frame options, mounting types (B3, B5, B14, B35) and IP55 protection make it easier to fit different sites.

Finding the right product

Whatever your sector, the deciding factor is the application itself: the type of load, the operating hours and the ambient conditions. We supply solutions for many applications, from general-purpose industrial motors to crusher, vibration and smoke extraction motors.

For a motor suited to your sector, request a quotation on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

At DRG Motor, we keep spare parts for our products in stock. By supplying bearings, fans, fan covers, terminal boxes and other components quickly, we aim to secure our customers' production continuity. Thanks to our İzmir-based stock and logistics network, we can supply the part you need in a short time.

Most frequently needed spare parts

• Bearings: the drive-end and non-drive-end bearings are the parts that wear most; size and type (e.g. deep-groove ball or cylindrical roller) depend on the frame size.
• Fan and fan cover: on IC411 motors, the external fan that provides cooling can be damaged by impact or wear; a broken fan causes both overheating and vibration.
• Terminal box and terminal board: connection studs, links, gasket and lid.
• Seals and gaskets: shaft seals and end-shield gaskets are important for maintaining the IP protection level.
• End shields and flanges: B5 / B14 flanges and bearing covers.

How to get the right part quickly

Sharing the details on the motor nameplate speeds up the process considerably: power (kW), speed, frame size (e.g. 132M, 160L), mounting type, voltage and, if available, the serial number. For bearings, the code printed on the existing bearing is enough. Sending a photo of the nameplate and the faulty part removes the risk of receiving the wrong item.

Replace the part or the motor?

Replacing parts such as bearings or a fan is usually an economical solution. However, for an old, low-efficiency motor with a burnt winding or a damaged housing, replacing it with a new one may pay off in the long run, and an IE3 or higher motor also brings energy savings.

For spare part requests, send us the nameplate photo on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Motor efficiency is improved through correct sizing, the use of high-efficiency (IE3/IE4/IE5) motors, regular maintenance and suitable drive systems. Running a motor close to its rated load is more efficient than using an oversized one, because the efficiency and power factor of induction motors drop noticeably at light load.

Measures on the motor side

• Correct sizing: avoid motors that are permanently far larger than the load; measure the load to establish the real requirement.
• Higher IE class: replacing old, low-efficiency motors with IE3, IE4 or IE5 motors provides savings that pay for themselves quickly, especially on machines with long running hours.
• Rewind or replace: motors that have been rewound several times may suffer higher iron losses, so replacement should also be compared in cost terms.

Measures on the system side

• Frequency inverter: on variable loads such as pumps and fans, reducing speed instead of throttling flow with a valve or damper saves a great deal of energy. For centrifugal loads, the power demand varies approximately with the cube of speed.
• Power quality: balanced voltage at the rated value prevents unnecessary losses and heating; reactive power compensation reduces losses across the plant.
• Mechanical transmission: properly aligned couplings, correctly tensioned belts and efficient gearboxes reduce transmission losses.
• Avoiding idle running: stopping machines that run without load through automation is the simplest saving of all.

The role of maintenance

Clean cooling surfaces, properly lubricated bearings and sound connections let a motor operate close to its nameplate efficiency. A motor that runs hot is less efficient and also consumes its insulation life.

For an efficiency review of your existing motors and a quotation, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Well-manufactured and regularly maintained electric motors can generally run trouble-free for 15–20 years or even longer. Motor life is determined by the insulation class, bearing quality, operating temperature, load conditions and maintenance routine. In practice, two separate lifetimes matter: that of the winding insulation and that of the bearings.

Insulation life and temperature

Winding insulation ages over time under the effect of heat. Class F insulation is rated for up to 155 °C; when a motor runs well below that limit, for example with a class B temperature rise, the insulation keeps a substantial safety margin. As a rule of thumb, every sustained 10 °C increase in operating temperature roughly halves insulation life. Overloading, voltage imbalance, blocked cooling and frequent starts therefore shorten life directly. Moisture, chemical vapours and voltage spikes from inverters also stress the insulation.

Bearing life

Bearings are the parts that wear most mechanically, and many motor failures originate there. The main factors that determine bearing life are:

• Lubrication with the right type, quantity and interval
• Coupling and pulley alignment, and belt tension
• Vibration level and a solid foundation
• Seals and IP protection that keep dust and water out of the bearing

With good maintenance, bearings are replaced on schedule and the rest of the motor keeps working for many years.

How to extend service life

The most effective steps are choosing a motor rated for the application, ensuring adequate ventilation, using a correctly set protection relay and PTC thermistors, and measuring vibration and insulation periodically. DRG Motor's motors, with class F insulation, quality bearings and high efficiency, are designed for long service life.

For help choosing a long-lasting motor, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Motor power (kW) is determined by the load requirement of the driven machine; the motor should be selected close to, but not below, the load. Speed depends on the supply frequency and the number of poles: at 50 Hz, 2 poles correspond to about 3000 rpm, 4 poles to about 1500 rpm, 6 poles to about 1000 rpm and 8 poles to about 750 rpm synchronous speed.

How is power calculated?

Mechanical power is the product of torque and speed: P (kW) = T (Nm) × n (rpm) / 9550. If the torque the machine requires and its operating speed are known, the necessary power follows from this formula. For pumps and fans, flow, pressure and equipment efficiency are taken into account; for conveyors, load, speed and friction. Losses in transmission components (gearbox, belts) and a reasonable safety margin are added, and the next standard rating is chosen. A heavily oversized motor, however, has lower efficiency and power factor at light load.

Speed and slip

The actual speed of an induction motor is slightly below synchronous speed; the difference is called slip. A 4-pole motor, for example, turns at roughly 1450–1480 rpm at full load. Synchronous speed is given by n = 120 × f / p (f: frequency, p: number of poles). On a 60 Hz supply, speeds are about one fifth higher.

What if the speed does not match?

• Gearbox: the most common solution where low speed and high torque are required.
• Belt and pulleys: the pulley diameter ratio adjusts speed flexibly.
• Frequency inverter: used when speed must change during operation.

An incorrectly selected motor can cause efficiency loss, overheating and early failure. Starting conditions, such as starting under load or a high-inertia load, must be evaluated separately.

For a correct power and speed calculation, send your application details to +90 (542) 666 11 11 (WhatsApp) or [email protected].

The main advantages of asynchronous (induction) motors are their robust construction, long life, low maintenance requirement and high efficiency. Since they contain no wearing parts such as brushes or commutators, they operate reliably under demanding industrial conditions.

A simple, durable design

The rotor of an induction motor is usually a so-called squirrel cage: aluminium or copper bars joined at both ends by short-circuit rings. No electrical connection is made to the rotor; current is induced in it by the rotating magnetic field of the stator. As a result, there is no need for brushes, commutators or slip rings that require maintenance. The only moving wear parts are essentially the bearings and the fan.

Key advantages

• Low maintenance: routine work is mostly limited to bearing lubrication, cleaning and checking connections.
• Direct-on-line operation: connected to a three-phase supply, the motor starts without any additional drive.
• Easy speed control: with a frequency inverter, speed can be adjusted over a wide range.
• Suited to harsh environments: a totally enclosed frame, IP55 protection and IC411 external fan cooling allow operation in dusty and humid conditions.
• Standardisation: IEC frame sizes and mounting types (B3, B5, B14, B35) make motors from different manufacturers interchangeable.
• Economy: a wide power range, easy availability and low operating cost.

Limitations and how to handle them

With direct-on-line starting, inrush current can reach several times the rated current; star-delta starting, a soft starter or an inverter reduces this effect. Since power factor and efficiency fall at light load, correct sizing matters. These advantages make induction motors the most common choice in industry, and they form the core of DRG Motor's product range.

For an induction motor suited to your application, request a quotation on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

The resistance of electric motors to dust and water is expressed by the IP (Ingress Protection) rating defined in IEC 60529. Our standard industrial motors are rated IP55, which means they are protected against harmful ingress of dust and against water jets from any direction.

How to read an IP code

The first digit of the IP code indicates protection against solid objects and dust, the second against water:

• First digit 5: dust-protected; dust is not fully excluded but cannot enter in amounts that would impair operation.
• First digit 6: dust-tight; no dust enters.
• Second digit 4: protection against splashing water from any direction.
• Second digit 5: protection against water jets from any direction.
• Second digit 6: protection against powerful water jets.
• Second digit 7: protection against temporary immersion under defined conditions.

An IP55 motor can therefore be used safely in dusty workshops and on sites exposed to rain, while IP56 or IP66 is considered for areas washed down heavily or exposed to severe water, such as ship decks.

What provides the protection?

The protection level relies on the sealing faces of the frame and end shields, shaft seals, the terminal box gasket and cable glands. During installation, the gland must match the cable diameter, the terminal box lid must be closed properly, and condensation drain holes must sit at the lowest point for the chosen mounting position. Renewing worn seals and gaskets during maintenance keeps the original IP level.

Harsher environments

For more demanding environments, solutions with higher IP ratings can be offered. Outdoor motors exposed to direct sun and rain may benefit from a protective canopy, and anti-condensation heaters can be considered where condensation is a risk. IP55 protection allows our motors to work safely for a long time in dusty, humid and outdoor conditions.

For advice on the right protection rating for your site, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Yes. DRG Motor products are offered in the IE3, IE4 and IE5 high-efficiency classes and provide significant energy savings. A high-efficiency motor lowers the electricity bill by doing the same work with less electricity. Since electric motors account for a large share of industrial electricity use, motor efficiency directly shapes a plant's energy costs.

Where do the savings come from?

Part of the energy a motor draws from the grid is delivered to the shaft as mechanical power; the rest turns into heat. These losses fall into four main groups:

• Copper losses in the stator and rotor windings
• Iron losses (hysteresis and eddy currents) in the magnetic core
• Mechanical losses from bearing friction and the fan
• Additional (stray) load losses

In high-efficiency motors, quality copper, low-loss electrical steel and an optimised design reduce these losses. Lower losses also mean a cooler-running motor and therefore longer insulation and bearing life.

How to estimate the savings

An approximate annual difference can be calculated as: shaft power × annual operating hours × (1/old efficiency − 1/new efficiency) × electricity unit price. Especially on industrial motors running 24/7, even a gain of a few points in efficiency turns into significant annual savings. The cost of electricity consumed over a motor's life is often far higher than its purchase price, so choosing on initial price alone can be misleading.

Ways to increase the savings

Using a high-efficiency motor together with a frequency inverter on variable-flow pumps and fans, sizing the motor correctly and maintaining it regularly increase the gain further. High-efficiency motors pay back their initial cost quickly and deliver substantial benefits in the long term.

For a savings comparison on your existing motors, write to +90 (542) 666 11 11 (WhatsApp) or [email protected].

The supply process at DRG Motor is fast and transparent. When you share your needs (power, speed, mounting type, quantity), our team proposes the most suitable product together with stock and delivery information. Many motors are available with a fast delivery option from stock, and we provide technical advice during installation and commissioning.

Supply steps

• Defining the requirement: power (kW), speed or number of poles, voltage and frequency, mounting type (B3, B5, B14, B35), frame material, protection rating and quantity are clarified. When replacing an existing motor, a photo of its nameplate is the quickest route.
• Technical fit: shaft diameter, flange size and frame size are checked against the machine, and alternatives are suggested if needed.
• Quotation and approval: the product, stock status and delivery information are sent; shipment is planned after approval.
• Receipt: on delivery, check that the nameplate data match the order and that there is no transport damage.

Installation points to watch

• Mount the motor on a flat, rigid, vibration-free base, with all feet seated evenly.
• With couplings, eliminate shaft misalignment; with belt drives, align the pulleys and set the correct belt tension.
• For motors stored for a long time, measure insulation resistance before commissioning.
• Make the star or delta connection according to the supply voltage, the nameplate and the terminal diagram, and do not forget earthing.
• Set the thermal-magnetic protection to the rated current and check the direction of rotation with a short start.

After commissioning

During the first operating hours, monitor current, noise, vibration and housing temperature. With our technical team's guidance, your motor starts running smoothly with the correct connection, alignment and protection settings.

For supply and installation support, request a quotation on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

The main criteria when choosing an electric motor are the application, the required power (kW), speed, energy-efficiency class (IE3/IE4/IE5), mounting type, protection rating (IP) and the conditions of the operating environment. A correctly selected motor delivers energy savings, long life and uninterrupted operation.

Electrical and performance criteria

• Power and torque: assess the machine's continuous load together with its starting torque requirement.
• Speed: choose 2, 4, 6 or 8 poles, and match with a gearbox or inverter if necessary.
• Supply: single or three phase, voltage (e.g. 230/400 V, 400/690 V) and frequency (50/60 Hz).
• Efficiency: for long running hours, IE3 and higher classes reduce operating costs.
• Duty type: S1 for continuous operation; choose the appropriate duty type for frequent starts and stops.

Mechanical and environmental criteria

• Mounting type: B3 foot-mounted, B5 large flange, B14 small face flange, B35 foot and flange.
• Frame size and shaft: the IEC frame number, shaft diameter and key size must suit the machine.
• Frame material: cast iron for heavy, vibrating duties; aluminium where low weight matters.
• Protection and insulation: IP55 or higher for dusty and humid sites, and class F insulation.
• Environment: high ambient temperature and altitude reduce cooling capacity, so derating must be considered in these conditions.

Common mistakes

Choosing a heavily oversized motor, looking only at the purchase price, failing to check mounting dimensions and not mentioning inverter operation are the most frequent errors. The DRG Motor technical team helps you make the right choice in terms of both performance and cost by identifying the most suitable motor for your application.

For help with motor selection, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Electric motors are used in almost every industry that needs mechanical power, including manufacturing plants, agricultural machinery, pump and fan systems, HVAC (heating, ventilation and air conditioning), compressors, conveyors, lifts, cranes and automation systems. By converting electrical energy into motion, they are the basic drive source of modern industry.

Main fields of application

• Manufacturing: machine tools, mixers, extruders, packaging and filling lines.
• Water and wastewater: clean-water pumps, booster stations, blowers and mixers in treatment plants.
• Building services: air-handling units, extract fans, circulation pumps, lifts and escalators.
• Agriculture: irrigation pumps, feed mixers, ventilation fans and post-harvest processing equipment.
• Mining and building materials: crushers, screens, mills, belt conveyors and concrete batching plants.
• Logistics and lifting: cranes, hoists, warehouse automation and conveyor belts.
• Food and textiles: mills, kneaders and cooling equipment; weaving and spinning machines.

Motor type depends on the application

Not every sector uses the same motor. For general fixed-speed applications, three-phase induction motors are the standard. On variable-flow pumps and fans, high-efficiency motors driven by frequency inverters stand out. Vibration motors are chosen for screens and feeders, smoke extraction motors for fire safety systems, and single-phase motors where no three-phase supply exists. Automation tasks requiring precise positioning use servo motors.

Why efficiency matters

Because electric motors consume a large share of industrial electricity, efficiency plays a critical role in every sector. DRG Motor offers solutions for these applications with a wide range of power and type options.

To find the right motor for your application, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].

Electric motors are divided first by supply type into AC (alternating current) and DC (direct current) motors; AC motors are further classified as synchronous or asynchronous, depending on how the rotor follows the rotating field. The most common type in industry is the three-phase asynchronous motor, thanks to its robust construction and economical operation.

AC motors

AC motors are durable, long-lasting and low-maintenance, and are widely used in pumps, fans and general industrial applications. There are two main sub-groups:

• Asynchronous (induction) motors: the rotor turns slightly slower than the stator's rotating field; this difference is called slip. The squirrel-cage rotor has no brushes, so maintenance needs are low. Single-phase and three-phase versions exist.
• Synchronous motors: the rotor turns at exactly the speed of the rotating field, so speed depends on frequency rather than load. Permanent-magnet synchronous motors and synchronous reluctance motors offer high efficiency, and IE4 and IE5 levels are reached with these technologies. They are usually operated with a frequency inverter.

DC motors

DC motors are preferred where precise speed and torque control is required. Conventional brushed DC motors are simple to control but need regular maintenance because of brush and commutator wear. Brushless DC (BLDC) motors eliminate this with electronic commutation and are common in fans, small pumps and portable devices. In industry, many older DC drives are now being replaced by inverter-fed induction motors.

Other special types

Servo and stepper motors for positioning, vibration motors for screens and feeders, and smoke extraction motors for fire safety serve specific needs. The DRG Motor range mainly consists of high-efficiency three-phase asynchronous motors.

To determine the right motor type for your application, contact us on +90 (542) 666 11 11 (WhatsApp) or at [email protected].