Low Noise DC Motor

Brief Introduction

This Z2-4 DC Motor is generally industrial small size DC motor, which requires constant power speed range no larger than 2:1, and overload capacity no larger than 1.5 times of electric traction of rated torque. The basic structure of motor adopts drop-proof uniaxial extension, self-fan cooled structure, applying in general normal working conditions. This series of motor has fine speed adjusting characteristic, reliable property and no need of direct AC power supply. It is with internal fan and self-ventilation. The motor can operate when the ambient temperature is -15℃~+40℃; Altitude ≤1KM; and monthly average air humidity ≤90% (If temperature is 25℃). This series of motor applies in industries of metal cutting machine, paper-cutting, dyeing and weaving, printing, cement, etc.

Engineered for bidirectional electromechanical conversion, this unit implements precision commutation and robust magnetic circuits to deliver reliable performance in both motoring and generating modes.

Core Electromagnetic Systems:

Commutator-Brush Interface: Mica-insulated copper segments ensure seamless AC/DC transition while withstanding continuous arcing overloads.

Laminated Armature Core: DR510 silicon steel stacks minimize eddy losses during high-speed rotation, maintaining flux density stability.

Main Pole Assembly: Field coils wound on tapered pole shoes optimize magnetic field distribution across the air gap.

Interpole Integration: Commutation-enhancing poles suppress sparking during load transients via series-connected windings.

Construction highlights:
• Die-cast end shields with precision-machined bearing seats
• Resilient brush holders allowing ±5° radial adjustment
• Ventilated yoke design dissipating heat from field windings
• Dynamic balancing for vibration-free operation up to 3,600 RPM

The Z2-4 executes critical functions:

Motoring: Converts DC input to torque via electromagnetic force (f=Blia)

Generating: Induces DC output through rotating conductor flux-cutting

Commutation: Sliding brush-contactor system sustains unidirectional current

Cooling: Axial fans maintain thermal stability at full load

Validated for industrial drives and auxiliary power units, its modular design enables rapid maintenance of armature windings, carbon brushes, and pole assemblies. All components comply with IEC 60034-1 standards for electrical machine construction.

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC and NEMA installation dimensions available

• Customizable outlook and dimensions

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Armature

• 99.9% pure copper bar for armature to ensure the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the copper bars are fitted in by handwork to ensure all slots are full and avoid any possible flaw.

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Winding:

• All windings are made of pure copper to assure induction efficiency

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Package and delivery

• All motors will be packaged well before delivery

• Plastic cover inside, vacuum tin foil outer and then solid wood box

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Applications

Cement

Power Station

Pump

Sugar

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