Vertical Hollow Shaft Motor

※ Over 20 Years of Expertise in Manufacturing
※ Comply with international standards such as IEC and NEMA, and certified by UL, CE, and CSA
※ Exceptional Customization Capabilities，suited to your particular operational conditions, maximizing efficiency and performance
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PRODUCTS & SERVICE

VHS Series Vertical hollow shaft three-phase asynchronous induction motor is suitable to be used with deep-well pumps. The motor complies to NEMA standard , capable of high axial load and with Non-reverse Ratchet to prevent reversely running when stopped.

FEATURES
  • Power: 10 - 600 HP
  • Speed: 3000/3600RPM, 1500/1800 RPM
  • Votage & Frequency:380-415V,50-60Hz, 230/460V,60Hz
  • 1.15 Service Factor
  • NEMA Design
  • Insulation: Class F & Class H
  • Efficiency : Standard Efficiency , High Efficiency, Premium Efficiency
  • Maximum 60℃ Ambient，3300 Feet Altitude
  • High axial load design
  • Non-Reverse Ratchet
  • Low noise, low vibration
Vertical Hollow Shaft Motor certificate
Vertical Hollow Shaft Motor Certificate_2
Vertical Hollow Shaft Motor Certificate_3
Vertical Hollow Shaft Motor Certificate_4

Welcome to Goowill Motor

GOOWILL is a professional supplier of deep well pump motors, integrating R&D, production, and sales.Dedicated to building a professional production base with a wide variety, complete specifications, and outstanding output, we always uphold the philosophy of “customer first” and focus on providing customers with high-quality, highly reliable deep well pump motor solutions.
Years of Experience
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With 20 years of expertise in the motor industry, we provide reliable solutions and exceptional technical support to customers.
Annual Output
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We produce 6,000 motors annually, ensuring stable production capacity and on-time delivery of high-quality products.
Countries
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Our products are exported to 25 countries worldwide, demonstrating reliability and international competitiveness in diverse markets.
Project Cases
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More than 200 domestic and foreign large-scale project participation cases

Workshop Overview

Specialization in Production Processes

To address the manufacturing characteristics of VHS motors, specialized planning was implemented in the process design and production operations. Dedicated molds and tooling were developed to effectively ensure product quality during manufacturing.

Stator Winding

Place windings into stator core slots accurately.

Vacuum Impregnation of Stator

Enhance insulation strength via vacuum varnishing.

Hot Fitting Bearings

Heat bearings and mount them onto the rotor shaft.

Rotor Balancing and Coating

Rotor Balancing and Epoxy Coating

Press Stator into Housing

Insert the wound stator securely into the motor housing.

Install Rotor

Fit rotor into stator ensuring proper air-gap alignment.

Install End Cover

Install end cover, coupling, and anti-reverse parts.

Testing

Add oil, test for vibration, noise, and performance.

Painting and Packaging

Complete painting, pack motor in a wooden crate safely.

Strict Quality Control

GOOWILL follows strict quality management to ensure product efficiency and stability.

Comprehensive Design Review and Verification

Design Review: During the initial motor design stage, multi-departmental reviews are organized to ensure the design meets usage requirements, standards, and production capabilities.

Simulation and Analysis: Computer simulations and analyses are used to assess the motor’s thermal, force, magnetic, and fluid dynamics, ensuring performance and reliability under various operating conditions.

Material Selection and Inspection

Quality Control: Key motor components, such as stators, rotors, and bearings, require the use of high-quality raw materials. Especially the magnetic materials (silicon steel sheets) and insulation materials must meet electrical and mechanical performance requirements.

Incoming Inspection: A stringent inspection process is established to test purchased materials such as metals, copper wire, magnetic cores, and insulation, ensuring they meet required standards.

Precision Control in Parts Manufacturing

Precision Control ：For components of vertical hollow shaft motors, precise machining and critical component testing are conducted to ensure machining accuracy. Manual winding operations are employed to further control the motor's quality, ensuring stable performance under high loads and harsh environments, providing customers with high-quality and reliable motors.

Assembly Process and Accuracy Control

Strict Assembly Process: During motor assembly, every step is followed according to technical specifications, including the precise fit between the stator and rotor, correct installation of motor bearings, and the coaxiality control of the motor shaft.

Torque Control: The torque of key fasteners (such as bearing housings and armature bolts) is controlled scientifically to prevent potential issues caused by over-tightening or insufficient tightening.

Performance Testing

Prototype Testing: For new motor models, a type test is conducted to verify whether the design meets customer requirements and standards, ensuring that the motor performs according to expectations and safety requirements.

Factory Testing: Before shipping, every motor undergoes strict factory testing, including insulation resistance, dielectric strength, operational noise, vibration, and more.

UL Certification Compliance

UL Certification：Most of our motor models are UL certified, meaning they meet US safety, performance, and quality standards. UL certification ensures that motors comply with strict international standards and enhances customer trust in product quality and safety.

Detailed Product Tracking and Records

Full Process Documentation: Every stage of production, from raw material procurement to finished product delivery, is documented to ensure traceability.

Test Data Archiving: All test data, including performance, load, and vibration tests, are fully archived for future quality traceability and analysis.

Standardized Transport and Packaging Management

Transport Protection: Effective protective measures are taken during transportation to prevent damage from collisions, compression, or moisture.

Packaging Inspection: Packaging solutions are designed according to motor type and use, ensuring the packaging material is resistant to pressure, vibration, and moisture, thus preventing damage from improper packaging.

After-Sales Service and Maintenance Support

After-Sales Feedback: A comprehensive after-sales service system is established, with regular customer follow-ups to gather feedback on motor performance in real-world usage and address any issues promptly to enhance reliability.

Preventive Maintenance Recommendations: Based on the motor’s operating environment and usage conditions, regular preventive maintenance advice is provided to help customers extend motor lifespan and reduce failures.

Comprehensive After-Sales Policy

This comprehensive after-sales policy let us to providing reliable and high-quality support throughout the lifecycle of our products.

24-Hour Immediate Support

We offer 24/7 technical consultation services to ensure prompt assistance for users.

Services include guidance on installation, fault diagnostics, troubleshooting, and replacement of spare parts, ensuring minimal downtime and maximum satisfaction.

Warranty Coverage

Warranty Period: The warranty is valid for 12 months from the start of motor usage or 18 months from the shipment date, whichever occurs first.

During this period, any defects in materials or workmanship will be addressed promptly under the warranty terms.

Limited Warranty Terms

If defects in materials or workmanship are discovered within the warranty period, buyers can report the issue by providing a written notification along with supporting evidence (photos, videos, etc.).

The seller's after-sales quality department will respond within 3 calendar days with a resolution plan to ensure quick and efficient problem-solving.

Post-Warranty Support

For products beyond the warranty period, we provide affordable maintenance and spare part replacement services.

Our team remains available for technical support and preventive maintenance advice to prolong the lifespan of your motor and enhance its performance.

Customer Feedback & Reviews

Customized Services

GOOWILL is committed to meeting the diverse needs of customers by offering flexible customized production services, ensuring that each motor is perfectly suited to different application scenarios and specific requirements. Additionally, protection features for the motor can be enhanced based on the customer’s actual operating conditions.

High Speed Serial
High Voltage Serial
High Torque Serial

Application

our products are widely applied in the fields of agriculture irrigation, urban water supply system, hydroelectric power station drainage system, power plants, steel plants cooling system, water supply and fire protection system of high building, industrial water conditioning etc.
Agriculture Irrigation
Hydroelectric Power Station
Power Plants
Golf Field
Fire Protection System of High Building
Steel Mill
Common Questions

Most Popular Questions

Answer: VHS motors are widely used in water pumps, deep-well pumps, mining, chemical, and steel industries. They are particularly suited for high-power, high-efficiency, and continuous operation requirements.

Answer: The VHS motor features a vertical hollow-shaft design, ideal for high-load applications like deep-well pumps. It offers higher efficiency, stability, and durability, reducing maintenance frequency and improving system reliability.

Answer: Yes, GOOWILL’s VHS motors comply with IEC, NEMA, and other international standards, and are UL, CE, and CSA certified, ensuring they meet the stringent quality requirements of global markets.

Answer: Yes, VHS motors are designed to operate in harsh environments, including high temperatures, moisture, and dusty conditions. We can also provide models with extra protection for extreme environments.

Answer: Yes, we offer customization options for VHS motors, including variations in power rating, voltage, and additional protective features to meet your specific operational needs.

Answer: If the motor fails to start, first check the power supply, connections, and control circuits. If everything appears normal and the motor still won't start, please kindly contact us.