1. An electric motor is the heart of industrial systems. A long-lasting, efficient, and durable motor directly affects the continuity of production lines, energy efficiency, and operating costs. At DRG MOTOR, we combine material quality, engineering precision, and rigorous testing processes to deliver high-performance motors. Below, you can find the essential features that a motor must have to be truly considered “high quality.”

1. Winding System and Material Quality
The heart of a quality motor is 100% pure electrolytic copper winding. Aluminum windings are low-cost but have lower electrical conductivity and weaker heat resistance. DRG MOTOR uses only high-purity copper wire.

  • Insulation class: At least Class F (155°C)

  • Winding technique: CNC-controlled automatic winding machines ensure smooth and dense winding.

  • Varnishing: Vacuum Pressure Impregnation (VPI) ensures complete insulation coverage and improved vibration resistance.

Result: Low losses, reduced heat, high efficiency, and long service life.

2. Frame Structure and Mechanical Durability
The motor frame is critical not only for aesthetics but also for vibration, heat dissipation, and durability.
Cast iron frames provide three times the rigidity of aluminum and 40% less vibration.

  • Cooling fins: Wide and symmetrical for optimal heat dissipation.

  • Surface machining: Precision CNC machining extends bearing life.

  • Painting: Electrostatic powder coating (RAL series colors) ensures corrosion resistance.

Result: Quiet operation, high durability, and suitability for heavy-duty industrial environments.

3. Efficiency Class – Energy Performance
The quality of a motor is measured by its energy efficiency. Motors below IE3 are now considered outdated.

  • DRG MOTOR series are manufactured as high-efficiency motors in IE3, IE4, and IE5 classes.

  • Low-loss magnetic sheets (0.5 mm) minimize core losses.

  • Rotor-stator air gaps are controlled at the micron level.

Result: Lower energy consumption, reduced operating costs, and environmentally friendly operation.

4. Bearing and Shaft Quality
The motor’s lifespan heavily depends on bearing quality. DRG MOTOR uses only world-class bearings such as SKF, FAG, and C&U.

  • Bearing precision: CNC machined with micron-level tolerances.

  • Lubrication: Heavy-duty motors are equipped with lubrication nipples.

  • Bearing protection: Dust seals and metal covers provide IP55 protection.

Result: Long life, low noise, and near-zero vibration.

5. Cooling and Fan Design
Insufficient cooling can reduce motor life by up to 50%.
The fan system must maintain airflow and thermal balance.

  • Fan material: High thermal-resistant plastic.

  • Fan housing: Steel protective cage.

  • Air guidance: Rear cover channels optimize airflow.

Result: Cooler operation and extended insulation lifespan.

6. Vibration, Noise Level, and Balancing
Precisely balanced rotors ensure quiet and vibration-free operation. DRG MOTOR applies ISO 1940 G2.5 balancing standards.

  • Vibration level: Compliant with ISO 10816 standard.

  • Noise level: Maximum under 65 dB (depending on frame size).

Result: Quiet, smooth, and long-lasting performance.

7. Terminal Box and Electrical Connection
Electrical safety depends directly on connection quality.

  • Terminal material: Brass and copper bars.

  • Box protection: IP55 – IP66 for water and dust resistance.

  • Connection orientation: User-friendly, flexible cable entry options.

Result: Safe connections, easy installation, and long service life.

8. Testing and Quality Control
Every motor undergoes a series of tests before leaving the production line:

  • Insulation test (megger)

  • Winding resistance measurement

  • No-load test

  • Load performance and efficiency test

  • Vibration and noise analysis

All DRG MOTOR products are tested and results are recorded.

Result: Each motor is a laboratory-tested, certified product.

9. Certification and Compliance
A quality motor is not only well-manufactured but also compliant with international standards.
DRG MOTOR products:

  • Comply with CE, ISO 9001, IEC 60034, LVD, EMC standards.

  • Meet Turkey’s current Eco-Design (ErP) regulations.

  • Are RoHS compliant and made with environmentally friendly materials.

10. Duty Type and Application Flexibility

  • Standard motors are S1 duty (continuous operation).

  • S3 and S4 duty motors (intermittent or shock load) are available on request.

  • Mounting options: Flange-mounted (B5, B14, B34) or foot-mounted (B3).

Result: Suitable for every industrial application – pumps, fans, crushers, gearboxes, compressors, mixers, and all other applications, making DRG MOTOR a preferred high-quality choice.