Z4-250-21 DC Shunt Field Motor 440 V

AIMIN ELECTRICS CO., LTD. is one of the leading manufacturers and suppliers of z4-250-21 dc shunt field motor 440 v in China. With abundant experience, we are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk premium products made in China here and get quotation from our factory.

Brief Introduction

When industrial operations call for uncompromising power delivery, precise speed regulation, and long-term operational reliability, the  Z4-250-21 DC shunt field motor stands out as a high-caliber solution. Crafted by Xi'an AIMIN ELECTRICS Co., Ltd., a seasoned expert in industrial motor engineering, this CE-certified motor is purpose-built to withstand the demands of continuous, heavy-duty industrial workflows, making it a trusted choice for critical production processes.

Boasting a rated power of 185 kW and an operating voltage of 440 V, the Z4-250-21 is designed with exceptional flexibility, supporting dual rated speeds of 1500 r/min and 2200 r/min. This adaptability allows it to excel in both steady-torque applications-such as driving heavy-duty conveyor systems-and high-speed, constant-power tasks, including powering precision machine tool spindles. Its separately-excited configuration, with a 15 A excitation current, ensures minimal speed fluctuation even under variable load conditions, a vital attribute for applications where process consistency and precision are non-negotiable.

Engineered to thrive in harsh industrial environments, this DC shunt field motor is equipped with Class F insulation and an IP21S protection rating, enabling safe and stable operation at ambient temperatures up to 40°C and altitudes up to 1000 meters. The integrated IC 06 forced-air cooling system effectively maintains optimal operating temperatures during S1 continuous-duty runs, preventing overheating and extending the motor's service life. With a robust frame weighing 960 kg, it strikes an ideal balance between durability and compactness, facilitating seamless integration into existing production lines without requiring extensive modifications.

Versatile across a wide range of key industries, the Z4-250-21 proves indispensable in metallurgy (powering rolling mill conveyors), papermaking (driving web-handling rollers), textiles (regulating spinning machine speeds), and general manufacturing (supporting high-precision machining tools). Its broad speed regulation capability-achievable via armature voltage adjustment or field weakening-and strong overload capacity ensure smooth adaptation to dynamic production cycles, significantly reducing downtime. More than just a power unit, the  Z4-250-21 shunt fileld motor is a reliable operational partner, empowering businesses to maintain consistent, efficient, and high-performance industrial operations.

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC  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

Oil gas

Steel

Sugar

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