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SIMO ZFQZ Series Frequent Start-Stop DC Motor

Simo ZFQZ Series Frequent Start-Brake DC Motor

The Simo ZFQZ series frequent start-brake DC motors are specifically designed for cranes, elevators, metallurgical machinery, and industrial automation equipment operating under frequent start-stop conditions. This series delivers high efficiency, strong torque output, rapid response, and reliable braking, ensuring stable performance in heavy-duty and repetitive operation environments while meeting high-precision control and energy-saving requirements.

These motors feature high-quality windings and premium magnetic materials, with optimized cooling and insulation systems to maintain low temperature rise, minimal noise, and low vibration during extended operation. Multiple power ratings, speeds, and mounting configurations are available, enabling seamless integration with DC drive and braking systems for precise speed control and efficient braking.

  • High-performance DC motor for frequent start-stop applications

  • Strong torque output with fast start and braking response

  • Low noise, low vibration, reliable long-term operation

  • Multiple power ratings, speeds, and mounting configurations available

  • Suitable for cranes, elevators, metallurgical machinery, and industrial automation

Applications: Overhead cranes, metallurgical machinery, port lifting equipment, elevators, and various industrial devices requiring frequent start-stop operation.

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Excerpt:

The SIMO ZFQZ series DC motor is designed for applications that require frequent start-stop operations, offering high efficiency, reliability, and durability. Ideal for systems requiring frequent braking and starting, this motor ensures smooth operation and reduces wear, making it perfect for cranes, hoists, and similar heavy-duty machinery.

Xi’an Simo Motor ZFQZ Series Frequent Start–Brake DC Motors – Professional Guide


1. Product Overview – High-Performance DC Drive for Frequent Start/Stop Operations

The ZFQZ series DC motors are specialized high-performance motors developed for frequent forward/reverse rotation and rapid start–stop operations. Leveraging innovative electromagnetic design and structural optimization, this series delivers:

  • Exceptional dynamic response for high-frequency operations
  • Superior overload capacity for short-term peak loads
  • Reliable performance under harsh industrial conditions

Industries served: metallurgy, hoisting, mining, and other demanding sectors.

2. Model Identification – Clear Specification System

Example: ZFQZ-280-42B

CodeMeaning
ZMotor equipped with compensation winding
FQZFrequent start–brake special function
280Motor center height 280 mm
4Armature core length index
2Front-end cover type (1 = short, 2 = long)
BCompensation winding mark (for 250–280mm motors)

Follows GB/T 4831 and IEC standards, ensuring accurate and consistent specification recognition.


3. Technical Overview – Designed for Extreme Conditions

Performance Highlights

  • Optimized rotational inertia:
    • 35% lower than ZJJ-800 and ZJJ-900 series → faster dynamic response
  • Enhanced overload capability:
    • Max torque: 112% of ZJJ-800, 117% of ZJJ-900
  • Weight optimization:
    • Overall weight: 65% of ZJJ-800 → higher power density
  • Installation and maintenance: simplified design for easier service

4. Installation & Compatibility

  • Baseplate mounting design allows replacement of ZJJ-800 / ZJJ-900 series
  • Customizable shaft extensions available
  • Standards compliance: most dimensions follow international standards, except for B-dimension (foot hole axial distance)

5. Operating Environment Requirements

  • Ambient temperature: -30°C to +40°C
  • Altitude: ≤ 1000m
  • Air quality: no acidic or alkaline components affecting insulation or commutation
  • Power supply: compatible with static rectifier or DC generator
  • Rectifier ripple: ≤ 10% at rated speed/voltage/current; no external smoothing reactor needed

6. Quality Assurance – Simo Motor System

Corporate Capability

  • Integrated DC motor design and manufacturing chain
  • Electrical control systems, precision machining, mold and casting technology

Certifications & Honors

  • Management systems: ISO9001, ISO14000, OHSAS18000
  • Product certifications: CE, UL, CCC
  • Recognized as Top 500 Mechanical Industry / Top 100 Electrical Industry
  • Awards: AAA credit rating, "National & City Brand Products", "China Light Brand Products"

Quality Commitment

  • Standardized manufacturing: strict adherence to national/international standards
  • 72-hour continuous performance testing
  • Timely delivery with flexible scheduling for special orders
  • Rapid technical support: 24h response, 48h onsite service
  • Three-package service & lifetime cost warranty

7. Selection & Ordering Guide

Standard Ordering Process

  1. Review the ZFQZ product catalog
  2. Specify critical parameters in the order:
    • Motor model and code
    • Rated power & voltage
    • Speed range and duty
    • Excitation type & voltage
    • Mounting type

Example:
ZFQZ-280-42B 250kW 440V 720r/min He励, foot-mounted, left shaft output

Special Requirements

  • Structural changes: dual shaft, reverse box, reverse rotation
  • Non-standard specifications: contract for custom designs
  • Accessories: brushes, brush holders, spares must be specified

8. Industry Application Advantages

  • Metallurgy: auxiliary rolling equipment, material conveyors
  • Hoisting: bridge cranes, gantry cranes
  • Mining: hoists, conveyor machinery
  • Special equipment: rapid-response drive systems

Reliability & Economy:

  • Optimized electromagnetic and structural design
  • Excellent dynamic performance with balanced operational reliability and cost efficiency

Conclusion

The ZFQZ series is the preferred solution for high-frequency start/stop and bidirectional operations, offering high-performance, reliable, and durable DC drive solutions.

Contact Simo Motor technical team for detailed specifications or tailored selection guidance.


I can also prepare a comprehensive “Simo DC Motor Series Comparison Table”, showing Z4, ZSN4, ZDB, ZDT2, and ZFQZ with power ranges, application scenarios, and key features. This is very useful for sales, catalogs, or technical documentation.

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Simo Motor After-Sales Service Policy: Quality First, Customer Foremost

Sincere, Attentive, Dedicated — Simo Always Cares


Preface

Thank you for choosing Simo Motor products. As a company with many years of experience in motor manufacturing, Simo Motor always adheres to the principle of "Quality First, Customer Foremost." Through a comprehensive service system, we ensure that every customer enjoys efficient and professional after-sales support.

Our products have repeatedly been awarded provincial, municipal, and national honors such as “High-Quality Product,” “China Famous Brand Product,” “National Exemption from Inspection Product,” and “China Well-Known Trademark.” To further enhance customer experience, we have formulated this after-sales service policy, aimed at providing comprehensive, prompt, and satisfactory service guarantees.


1. Quality Assurance Commitment

Simo Motor strictly implements full quality control in accordance with international standards, national standards, industry standards, and corporate standards:

  • All products are manufactured under the effective operation of the GB/T 19001-2008/ISO 9001:2008 Quality Management System, ensuring rigorous inspection from raw material intake to final product delivery.

  • We guarantee that all products provided are brand new, unused, and meet the quality requirements stipulated in customer contracts.

  • We maintain a quality management system compliant with GB/T 19001-2000 idt ISO 9001:2000, ensuring its effective operation.


2. Pre-Sales Service

To help customers make the best choice, Simo Motor provides comprehensive pre-sales support:

  • Professional Technical Consultation: Responding to customer inquiries about motor products and technical issues.

  • Personalized Solutions: Objectively introducing Simo Motor product features and performance, and providing customized power solutions.

  • Comprehensive Product Information: Providing detailed quotations, drawings, and motor samples to help customers fully understand the product.


3. Ordering Instructions

To ensure the motor meets your usage requirements, please specify the following parameters when placing an order:

  • Basic Parameters: Motor model, rated power, rated voltage, number of poles, rated frequency.

  • Installation Environment: Protection level, cooling method, installation type, rotation direction, environmental conditions, cable exit position.

  • Usage Conditions: Installation altitude, working environment temperature, motor load type.

For special requirements, a separate technical agreement must be signed before placing an order. You may also call our customer service hotline 159-0292-3228 for professional guidance.


4. Warranty Policy Details

1. Warranty Period

Simo Motor provides a warranty of up to two years from the shipping date. Within this period, if the motor is damaged or cannot operate properly due to manufacturing defects, Simo Motor will repair or replace parts or the motor free of charge.

2. Warranty Coverage

  • The warranty covers product quality issues caused by our company, with free replacement of parts or free repair.

  • Warranty services require correct use and regular maintenance, following the original operation manual and recommended lubrication, cleaning, and care instructions.

3. Exclusions from Warranty

The following are not covered by the warranty:

  • Damage caused by non-designated personnel

  • Unauthorized modifications or self-repair

  • Use of non-official parts or software

  • Failure to follow operation manual instructions for use, handling, and maintenance

  • Damage caused by natural disasters (wind, fire, flood, earthquake, etc.)

  • Normal wear and tear under standard use


5. Post-Warranty Service

After the warranty expires, Simo Motor continues to provide service support:

  • Lifetime Paid Service: After the warranty period, if the product fails, we offer lifetime paid service, supplying consumable parts and components at cost price.

  • Regular Follow-Up: Our after-sales staff will periodically contact users to check product status and address potential issues.

  • Professional Repair Services: The company undertakes repair services for all types of motors, whether under warranty or not, providing professional maintenance and inspection.


6. Service Commitment and Standards

Simo Motor upholds the "Sincere, Attentive, Dedicated — Simo Always Cares" Three-Heart Service Philosophy, ensuring excellent customer experience through standardized service processes:

  • Professional Service Team: A dedicated team provides installation guidance, fault diagnosis, and repair services, ensuring efficient motor operation.

  • Rapid Response Mechanism: After receiving customer feedback, our after-sales team responds promptly and formulates quick solutions.

  • Full Tracking and Records: All service processes are documented to ensure traceability and continuous improvement of service quality.


7. Customer Complaint Channels

If you are not satisfied with Simo Motor’s services, please provide feedback through the following channels:

  • Direct complaints to the service department or headquarters

  • Call our customer service hotline: 159-0292-3228

We take every feedback seriously and continuously strive to improve our service quality.


Conclusion

Simo Motor will continue to provide high-quality products and professional after-sales service. Through a complete service system, we solve your concerns and ensure peace of mind. We firmly believe that only with customer success can Simo Motor grow. Choosing Simo Motor means choosing quality and trust.

Simo Motor — Dedicated Service, Creating the Future Together!

Simo Motor Brand Advantages: Outstanding Quality, Leading Innovation and Development in the Motor Industry

Over 60 Years of Professional Experience, Setting the Benchmark in the Motor Industry


Brand Heritage and Strength

Simo Motor (formerly Xi’an Motor Factory) was established in 1955. As one of the leading enterprises in China’s motor industry, it has over six decades of manufacturing experience and technical expertise. Today, the company has grown into a large-scale modern enterprise integrating motor product R&D, manufacturing, and sales. Its products are widely used in key sectors such as power, coal, petroleum, mining, metallurgy, railways, transportation, chemical, agriculture, water conservancy, and aviation.

With profound technical expertise and continuous innovation, Simo Motor has built a prestigious brand image in the motor industry. Its products are exported to more than 40 countries and regions, including North America, Europe, the Middle East, Southeast Asia, Africa, and Australia, earning trust and praise from global customers.


Core Technology Advantages

1. Leading R&D and Innovation Capability

Simo Motor treats technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Composed of senior engineers and technical experts focusing on cutting-edge motor technology research and applications.

  • Continuous Investment in Technology: 5%-7% of annual sales revenue is invested in R&D to ensure continuous innovation and product upgrades.

  • Patented Technology Achievements: Over 100 national patents, with multiple products receiving national and provincial science and technology progress awards.

  • Industry-Academia Collaboration: Strategic partnerships with renowned universities and research institutes to advance motor technology development.

2. Excellent Product Quality System

Simo Motor has established a robust quality assurance system to ensure each motor meets the highest standards:

  • International Certifications: ISO9001 Quality Management, ISO14001 Environmental Management, and OHSAS18001 Occupational Health and Safety certifications.

  • Strict Quality Control: 68 rigorous inspection processes from raw material procurement to final product delivery to ensure zero defects.

  • Advanced Testing Equipment: Equipped with international motor performance testing systems, vibration analyzers, noise measurement devices, and more.

  • Continuous Quality Improvement: Comprehensive feedback mechanisms for continuous optimization of production processes and product stability.


Product Advantages and Features

1. High-Efficiency Energy-Saving Technology

Simo Motor actively responds to national energy-saving policies with a series of high-efficiency products:

  • High-Efficiency Motor Series: Meets the national GB18613-2020 energy efficiency standards, with some products reaching IE4/IE5 ultra-high efficiency levels.

  • Energy-Saving Technology: Uses premium silicon steel, low-loss bearings, and efficient cooling systems to reduce operating energy consumption.

  • Intelligent Control Technology: Advanced variable frequency control systems optimize motor operation, improving energy savings by 15%-30%.

2. Outstanding Performance

Simo Motor products are known for high reliability, long service life, and low maintenance costs:

  • Powerful Output: Optimized electromagnetic design ensures high starting torque and strong overload capability.

  • Low Vibration and Noise: Dynamic balancing and noise reduction technologies ensure vibration and noise levels below national standards.

  • Strong Environmental Adaptability: Designed for harsh conditions with heat resistance, moisture-proof, and corrosion-resistant features.

  • Long Lifespan Design: Key components use specialized treatment and premium materials, with a design life exceeding 100,000 hours.

3. Comprehensive Product Series

Simo Motor provides a wide range of products to meet diverse customer needs:

  • High-Voltage Motors: Voltage levels of 6kV, 10kV, and power range 200–10,000 kW.

  • Low-Voltage Motors: Series such as YX3, YE3, YE4, with power range 0.55–1,000 kW.

  • Explosion-Proof Motors: Certified for use in flammable and explosive environments.

  • Special Motors: Customized for industries such as mining, metallurgy, and marine applications.

  • Non-Standard Customization: Strong ability to provide tailored solutions according to customer requirements.


Service System Advantages

Simo Motor has established a comprehensive customer service system:

  • Pre-Sales Technical Support: Professional selection guidance, solution design, and product demonstration.

  • In-Sales Support: Strict contract compliance, on-time delivery, and installation guidance.

  • After-Sales Guarantee: 24-month warranty, 24/7 technical support, 48-hour on-site service commitment.

  • Lifetime Maintenance Support: Customer equipment files maintained for full lifecycle service.


Industry Application Advantages

Simo Motor has extensive experience across key industries:

  • Power Industry: Provides reliable motors for thermal, hydro, and nuclear power.

  • Coal Industry: Explosion-proof motors certified for coal mine safety.

  • Petrochemical Industry: Corrosion-resistant and explosion-proof motors for harsh environments.

  • Metallurgy: High-overload, high-temperature resistant motors meet specialized equipment needs.

  • Transportation: Customized motors for railways, urban transit, and ports.


Brand Honors and Certifications

Simo Motor’s excellent product quality and market performance have earned multiple honors:

  • China Famous Brand Product, National Exemption from Inspection Product, China Well-Known Trademark

  • High-Tech Enterprise, Provincial Enterprise Technology Center

  • Multiple provincial and ministerial-level science and technology awards

  • Credit-worthy and trustworthy enterprise, AAA-level quality reputation


Conclusion

Choosing Simo Motor means choosing reliable quality, leading technology, and comprehensive service support. Over 60 years of professional accumulation have given Simo Motor deep technical expertise and rich industry experience, providing customers with the best motor products and complete power solutions.

In the future, Simo Motor will continue to adhere to the philosophy of “Quality First, Innovation Driven, Customer Foremost”, constantly improving product technology and quality, creating greater value for customers, and contributing to the development of China’s motor industry.

Simo Motor — Powerful, Efficient, and Fully Supported!

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