Xierko Advantage Winkelmann GNRF 225E.M/4 Motor

Xierko Advantage Winkelmann GNRF 225E.M/4 MotorWidely used in industrial fields that require high starting torque and precise speed control. This motor is known for its durability, high overload capacity, and stability in harsh environments, and is commonly used in nuclear power, heavy machinery, testing benches, and automation equipment.

Xierko Advantage Winkelmann GNRF 225E.M/4 Motor：

Model analysis

GNRF stands for Winkelmann's Heavy Duty DC Motor series. This series is known for its high overload capacity, sturdy structure, and suitability for harsh industrial environments.

225: The frame size of the motor is 225mm. This is the international standard frame size, which means that its installation dimensions comply with IEC standards and are easy to replace and maintain.

E: Usually representing electrical versions or specific cooling/structural forms (such as reinforced armatures or specific insulation levels), implying that they have been optimized in terms of electrical performance.

M: May represent medium speed or specific mechanical configurations (such as key shaft extension, specific bearing configuration), please refer to the original factory ordering code for details, but usually point to standardized mechanical interfaces.

/4: Represents a 4-pole motor. In DC motors, the number of poles affects the torque characteristics; The 4-pole design typically achieves a good balance between speed and torque, suitable for rated operating points around 1500 rpm.

Advantages summary: The model has a high degree of standardization, strong compatibility, and belongs to a mature heavy-duty industrial product line. The acquisition of spare parts and technical support are relatively *.

Armature and magnetic pole materials

High purity oxygen free copper winding: The stator and rotor windings use high conductivity oxygen free copper to reduce resistance losses, improve efficiency, and reduce heat generation.

High quality silicon steel core: Made by laminating low loss cold-rolled silicon steel sheets, reducing eddy current loss and hysteresis loss, and improving energy efficiency.

High strength cast steel casing: The body is made of rigid cast steel or welded steel structure, with strong vibration and impact resistance, suitable for high dynamic load scenarios.

Reversing system (DC motor core)

High performance brushes and brush holders: equipped with wear-resistant, low spark grade brushes (such as graphite metal composite brushes), combined with adjustable spring pressure brush holders, to ensure smooth commutation under high current (380A), reducing sparks and wear.

Compensating Winding: GNRF series usually has built-in compensating windings to counteract armature reactions, improve commutation performance, and prevent ring fires under high speed or heavy loads.

Bearings and Lubrication

Heavy duty ball/roller bearings: SKF or FAG heavy-duty bearings are selected to withstand combined radial and axial loads, with a long lifespan (L10 lifespan typically>40000 hours).

Sealing structure: The bearing end cover is equipped with a labyrinth seal or lip seal to prevent dust intrusion and grease leakage.

Insulation system

VPI vacuum pressure impregnation process: The winding undergoes vacuum pressure impregnation treatment, with insulation paint penetrating, moisture-proof, salt spray resistant, and chemical corrosion resistant. It is particularly suitable for harsh environments such as nuclear power and offshore platforms.

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