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Why Choose DRG Motor?
The electric motor is the heart of industrial systems. A motor should not merely rotate; it should add value to production, save energy and run reliably for years. DRG MOTOR is built with a quality approach that exceeds European standards in material quality, engineering, production tolerances, energy efficiency and testing. Below are the 10 key differences that set DRG MOTOR apart.
1. Winding System – The Heart of the Motor
A motor's real quality is hidden in its winding; the material and workmanship directly determine efficiency, heating, torque stability and life. At DRG MOTOR:
- 100% pure electrolytic copper wire (aluminium winding is never used) — low resistance, high conductivity, low loss.
- Vacuum Pressure Impregnation (VPI) coats the windings with resin, giving about 3× higher insulation strength than dip systems and protection against moisture and vibration.
- Minimum Class F (155 °C) insulation, Class H (180 °C) on request.
- Fully automatic CNC winding machines wind each coil with millimetric balance and a high slot fill factor.
As a result, the motor heats less, loses less energy and the winding life is markedly extended.
2. Frame Quality – The Basis of Mechanical Durability
The motor frame is not just a protective shell; it is the centre of vibration, heat and durability. At DRG MOTOR:
- Cast iron (GG20) frame across all series — about 3× higher rigidity than aluminium and superior vibration damping.
- Internal air channels designed with CFD analysis.
- CNC-machined bearing seats extend bearing life by up to 30%.
- Electrostatic powder coat withstands a 1000-hour salt-spray test.
The result is a quiet, long-life frame ready for harsh industrial conditions, impact and moisture.
3. Energy Efficiency – Savings Matter as Much as Power
Most of a motor's lifetime cost comes not from its price but from the energy it consumes. DRG Motor supplies all series in IE3, IE4 and IE5 classes:
| Transition | Efficiency gain | Average energy saving |
|---|---|---|
| IE3 → IE4 | +3–5% | up to 10% |
| IE4 → IE5 | +3–4% | up to 15% |
| IE3 → IE5 | +8–9% | up to 20% |
- 0.50 mm low-loss cold-rolled silicon steel reduces magnetic losses.
- Micron-tolerance rotor–stator air gap maximises magnetic efficiency.
- All production complies with Ecodesign (EU 2019/1781).
High efficiency typically pays back the investment within 1–2 years and lowers the carbon footprint.
4. Bearing and Shaft System – The Quiet Power of Rotation
A motor's practical life is often measured by its bearing life. DRG MOTOR uses only first-class bearing and shaft systems:
- Standard SKF / NSK / C&U bearings.
- Re-greasable bearing housings in heavy-industry series.
- All shafts ground to 0.01 mm tolerance — low runout, stable torque.
- Double-lip seals prevent dust, water and grease ingress.
This gives quiet operation, low maintenance and over 40,000 hours of bearing life.
5. Cooling and Fan Design – Thermal Balance
Motor life is inversely proportional to operating temperature; a cooler motor lasts longer. At DRG MOTOR:
- Fans from heat-resistant engineering plastic, fan cowl from steel sheet.
- Optimised air channels keep the frame 5–7 °C cooler.
- Aerodynamic fan profile lowers noise while improving cooling.
A lower operating temperature directly extends both insulation and bearing life.
6. Vibration and Noise – The Art of Balance
Rotor balance is the most critical parameter for both quietness and mechanical life. DRG MOTOR balances rotors to ISO 1940 G 2.5, tests noise to EN 60034-9 and vibration to ISO 10816.
Noise levels (dB(A)):
| Power range | Speed | Noise level | Test standard |
|---|---|---|---|
| 0.55 – 7.5 kW | 1500 rpm | 52 – 57 dB(A) | EN 60034-9 |
| 11 – 55 kW | 1500 rpm | 57 – 62 dB(A) | EN 60034-9 |
| 75 – 200 kW | 1500 rpm | 62 – 68 dB(A) | EN 60034-9 |
| 250 – 355 kW | 1500 rpm | 68 – 70 dB(A) | EN 60034-9 |
Vibration levels (RMS velocity – mm/s):
| Test standard | Value | Description |
|---|---|---|
| ISO 10816 / IEC 60034-14 | ≤ 1.5 mm/s | Standard operation |
| Low-vibration special build | ≤ 1.0 mm/s | For precision systems |
The aerodynamic fan and vibration-absorbing cast body keep noise below 70 dB(A); low vibration also protects coupling and bearing life.
7. Electrical Safety – Power Under Control
The terminal box is the centre of electrical safety. At DRG MOTOR:
- Brass / copper busbar connection systems.
- IP55 terminal box (higher protection on request).
- Reversible connection orientation for flexible mounting.
- Stainless bolts and quality cable glands for long life.
Safe connection, easy installation and electrical durability come together.
8. Testing – Every Motor Is Approved
Quality that is not tested is not quality. Every DRG MOTOR passes the following before leaving the factory:
- Insulation and resistance test (500 V Megger)
- Winding resistance and magnetic loss measurement
- No-load and rated-load tests
- Noise and vibration analysis
- Efficiency measurement (η, cos φ)
- Thermal balance test with thermal camera
All data is archived digitally and each motor is assigned a serial-numbered quality report — traceable, documented quality.
9. Certification and Compliance
Quality must be documented, not just claimed. DRG MOTOR products:
- Fully comply with CE, ISO 9001, LVD, EMC, IEC 60034.
- Comply with RoHS and Ecodesign (EU 2019/1781).
- Hold legal conformity documents for the EU and Turkish markets.
Documented quality means both legal assurance and global compatibility.
10. Application Flexibility and Service
DRG MOTOR offers tailored solutions for every industry:
- Mounting: B3 (foot), B5 (flange), B14 (compact flange), B35 (foot + flange).
- Duty types: S1 (continuous), S3 / S4 (intermittent and varying load).
- Applications: pumps, fans, conveyors, gearboxes, crushers, smoke extraction, mixers, presses and HVAC.
- Nationwide fast service, spare-part access and a 2-year warranty.
Explore DRG Motor Product Groups
Review the series that fits your need: IE3, IE4, IE5, high-efficiency, three-phase, general purpose, fan, pump and stone crushing motors.
DRG MOTOR: Quality Is a Culture, Not Just a Check
DRG MOTOR is more than a brand; it is a system uniting energy efficiency, engineering, durability and trust: 100% copper winding, cast iron durability, quiet and low-vibration operation, high energy efficiency, and documented, test-approved quality. For us, quality is not a concept checked at the end of production — it is a culture present at every stage.
DRG MOTOR – We supply the Power, You Have the Trust.
Frequently Asked Questions
Does DRG use copper or aluminium windings? All DRG motors use 100% pure electrolytic copper windings; aluminium is never used. Copper offers lower resistance, less heating and longer winding life.
Why is the DRG motor frame cast iron? Cast iron (GG20) offers far higher rigidity and vibration damping than aluminium, meaning quieter operation, longer bearing life and durability in heavy industry.
Which efficiency classes does DRG produce? DRG motors are produced in IE3, IE4 and IE5 classes, from 0.55 to 355 kW, compliant with Ecodesign (EU 2019/1781).
What is the warranty and service? All DRG motors carry a 2-year warranty with nationwide fast service and spare-part support.
Which standards do DRG motors comply with? CE, ISO 9001, LVD, EMC, IEC 60034 and RoHS; rotor balance to ISO 1940 G 2.5, noise to EN 60034-9, vibration to ISO 10816.
For a quote and technical info: WhatsApp | +90 542 666 11 11 | Contact