China wholesaler CHINAMFG D107L200 Water-Cooled & Water-Resistant Permanent Magnet DC Motor 38kw vacuum pump electric

Product Description


Product Description

Quanly In-runner brushless motor series,they are developped for boat,the motor diameter from 65mm to 155mm ,the length from 100mm to 220mm,the power from 1KW to 30KW,including water-proof and liquid-cooling version,can work on encode, hall sensor and sensorless mode,the motor case use light,high strength 7075 alloy with blaster and black hard anodize,can prevent from Oxidation and corrosion,Quanly motor use high quality ball bearing and the rotor with good dynamic balance,they are very quiet and low vibration, the stator lamination,magnets and copper wires are used top quality material available in marketing, the motor can work with high power density,high RPM , high efficiency. 

With an advanced 10-pole encapsulated core and 107mm diameter,

this compact DC motors weighting 7.65kg ONLY, while deliver high torque up to 65N*M & output power up to 38KW.


Thanks to the unique sealing configuration design, these motors

are tested waterproof IP68 according to ingress protection class,

and can be operated permanently underwater and applied in dusty


We can also customize the winding to perfectly match your

voltage, current, and maximum operating speed. Special shaft

modifications, cables and connectors are available CHINAMFG request.

Can be customized for 

– Sensor or sensorless
– Winding Current
– Shaft Options
– Cable and Connector
– Kv Ratings
– Mounting Options
– Encoder or Non





Drawing Dimension



Product Parameters

Variants D107L200-135 D107L200-112 D107L200-97 D107L200-84 D107L200-68 D107L200-56
Winding Turn & Connection 2.5T 3T 3.5T 4T 5T 6T 
Voltage Range(LiPo) 10-16S 10-20S 12-22S 12-26S    16-32S  18-38S
Max Spin Speed(RPM) 9,070  9,408  9,013  9,172  9,139  8,937 
Speed Constance kV(RPM/V)  135 112 97 84 68 56
Torque Constance Kt(N*M/A) 0.0801 0.0962 0.1123 0.1396 0.1675 0.1982
Current @8.4V without Loading(A) 6.5  6.0  5.4  4.2  3.5  3.0 
Max Power (KW)  38.9 38.8 38.6 38 38 38.2
Peak Current (A)  1,700  1,400  1,200  990  820  700 
Max Efficiency  92.00% >92% 91.00% 91.00% 91.00% 91.00%
Max Torque@60%(N*M) 64.0  64.0  65.5  65.5  65.0  65.0 
Continuous Working Current(A) 490  410  352  285  235  200 
Weight (kg) 7.65
Construction 12N/10P
Cooling Solution Water cooling
Max Working Temperature 120ºC
Dimension D118*L200
Insulation Voltage & Leak Current AC500V/10MA/3S
Working Life 8,000H


Auto Dyno Testing

Below tested at 135Kv at 52Vdc (with loading)


Motor Efficiency Nephogram



Auto Test Report

Item No. C_Voltage
C_Input Power(W) C_
Power Factor
M_Input Power(W) M_
Power Factor
M_Output Power(W) Synthesis Efficiency
0 51.599998 63.41 3267.57101 0.9986 99.42057 38.57198 52.639999 3248.080078 0.9351 562.869995 85.535711 6733 3.939996 2778.57164 85.034668
1 51.57198 114.919998 5870.049805 0.9995 98.624886 37.279999 97.339996 5789.330078 0.921 530 90.507889 6382 7.839995 5239.85713 89.263306
2 50.900002 140.039993 7123.75 0.9995 98.189857 36.93 119.769997 6994.799805 0.913 522.400571 91.476196 6222 9.819995 6398.57666 89.820343
3 50.540001 178.639999 9571.870117 0.9996 97.476799 36.419998 154.759995 8796.179688 0.901 521.299988 91.867744 5991 12.879995 8080.851563 89.549736
4 50.240002 213.199997 10705.29981 0.9996 96.80056 36.05718 186.850006 10362.79004 0.8891 518.669983 92.113564 5791 15.739995 9545.535156 89.166443
5 49.889999 251.240005 12528.66016 0.9996 95.887749 35.580002 222.800003 12013.4502 0.875 540.460571 91.415291 5590 18.759995 10982.13086 87.656067
6 49.5 292.339996 14463.79981 0.9995 94.984581 35.57198 262.73999 13738.37988 0.8599 507.98999 91.205711 5370 22.279995 12529.43555 86.626167

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Application: Universal, Industrial, Boat Engine /Outboard Motor / Trolling Motor
Operating Speed: Adjust Speed
Excitation Mode: Permanent Magnet


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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

dc motor

What is a DC motor, and how does it differ from other types of electric motors?

A DC (Direct Current) motor is an electric motor that converts electrical energy into mechanical motion. It operates based on the principle of electromagnetic induction and the interaction between current-carrying conductors and magnetic fields. DC motors are widely used in various applications due to their simplicity, controllability, and versatility. Here’s a detailed explanation of what a DC motor is and how it differs from other types of electric motors:

1. Basic Operation:

In a DC motor, electrical energy is supplied to the motor’s armature through a DC power source, typically a battery or a rectified power supply. The armature consists of multiple coils or windings that are evenly spaced around the motor’s rotor. The rotor is a cylindrical core with a shaft that rotates when the motor is energized. When current flows through the armature windings, it creates a magnetic field that interacts with the fixed magnetic field produced by the motor’s stator. This interaction generates a torque, causing the rotor to rotate.

2. Commutation:

DC motors employ a commutator and brushes for the conversion of electrical energy and the rotation of the rotor. The commutator consists of a segmented cylindrical ring attached to the rotor shaft, and the brushes are stationary conductive contacts that make contact with the commutator segments. As the rotor spins, the brushes maintain contact with the commutator segments, periodically reversing the direction of the current flow in the armature windings. This reversal of current flow in the armature windings ensures continuous rotation of the rotor in the same direction.

3. Types of DC Motors:

DC motors can be classified into different types based on their construction and the method of field excitation. The two main types are:

  • Brushed DC Motors: Brushed DC motors have a mechanical commutator and brushes to switch the current direction in the armature windings. These motors are relatively simple, cost-effective, and offer good torque characteristics. However, the commutator and brushes require regular maintenance and can generate electrical noise and brush wear debris.
  • Brushless DC Motors (BLDC): Brushless DC motors, also known as electronically commutated motors (ECMs), use electronic circuits and sensors to control the current flow in the motor windings. They eliminate the need for brushes and commutators, resulting in reduced maintenance and improved reliability. BLDC motors offer higher efficiency, smoother operation, and better speed control compared to brushed DC motors.

4. Speed Control:

DC motors provide excellent speed control capabilities. By adjusting the voltage applied to the motor, the speed of the DC motor can be regulated. Lowering the voltage reduces the motor’s speed, while increasing the voltage increases the speed. This feature makes DC motors suitable for applications that require precise speed control, such as robotics, conveyor systems, and electric vehicles.

5. Advantages and Disadvantages:

DC motors have several advantages, including:

  • Simple construction and easy maintenance (for brushed DC motors).
  • High starting torque.
  • Precise speed control.
  • Good controllability over a wide range of loads.

However, DC motors also have some limitations, such as:

  • Brushed DC motors require periodic maintenance and have limited brush life.
  • Brushed DC motors can generate electrical noise.
  • Brushless DC motors are often more expensive compared to brushed DC motors.

6. Differences from Other Electric Motors:

DC motors differ from other types of electric motors, such as AC (Alternating Current) motors, in several ways:

  • Power Source: DC motors require a DC power source, while AC motors operate from an AC power supply.
  • Speed Control: DC motors offer precise speed control by adjusting the applied voltage, whereas AC motors typically rely on frequency control for speed regulation.
  • Construction: DC motors use a commutator and brushes (in brushed DC motors) or electronic commutation (in brushless DC motors), while AC motors do not require commutation.
  • Starting Torque: DC motors typically provide higher starting torque compared to AC motors.

Overall, DC motors are versatile and widely used in various applications due to their controllability, speed regulation capabilities, and simplicity. The advancements inpower electronics and motor control technologies have further enhanced the performance and efficiency of DC motors, making them a popular choice in many industries.

dc motor

Can DC motors be used in renewable energy systems, such as wind turbines or solar tracking systems?

Yes, DC (Direct Current) motors can be effectively used in various renewable energy systems, including wind turbines and solar tracking systems. The unique characteristics and advantages of DC motors make them well-suited for these applications. Here’s a detailed explanation of how DC motors can be utilized in renewable energy systems:

1. Wind Turbines:

DC motors can be employed in wind turbines to convert the mechanical energy of the wind into electrical energy. There are two common configurations:

a. Direct Drive Wind Turbines:

In direct drive wind turbines, the rotor of the turbine is directly connected to a DC generator. The rotor’s rotational motion is transmitted directly to the generator, which produces DC electrical power. DC motors can be used as DC generators in this configuration. The advantage of using DC motors/generators is their simplicity, reliability, and ability to operate efficiently at variable speeds, which is beneficial in varying wind conditions.

b. Hybrid Wind Turbines:

Hybrid wind turbines combine both aerodynamic and electrical conversion systems. In this configuration, DC motors can be utilized for the pitch control mechanism and yaw control system. The pitch control mechanism adjusts the angle of the turbine blades to optimize performance, while the yaw control system enables the turbine to align itself with the wind direction. DC motors provide precise control and responsiveness required for these functions.

2. Solar Tracking Systems:

DC motors are commonly employed in solar tracking systems to maximize the efficiency of solar panels by optimizing their orientation towards the sun. There are two main types of solar tracking systems:

a. Single-Axis Solar Tracking Systems:

Single-axis solar tracking systems adjust the inclination of solar panels along a single axis (typically the east-west axis) to track the movement of the sun throughout the day. DC motors can be used to drive the rotation mechanism that adjusts the panel’s tilt angle. By continuously adjusting the panel’s position to face the sun directly, the solar energy harvested can be significantly increased, resulting in higher energy output compared to fixed solar panel installations.

b. Dual-Axis Solar Tracking Systems:

Dual-axis solar tracking systems adjust the inclination of solar panels along both the east-west and north-south axes to track the sun’s movement throughout the day and throughout the year. DC motors are utilized in the rotation mechanisms for both axes. This type of solar tracking system provides the highest possible energy yield by keeping the solar panels perpendicular to the sun’s rays at all times, maximizing the exposure to sunlight.

DC motors are preferred in renewable energy systems due to their advantages, including:

  • Efficiency at Variable Speeds: DC motors can operate efficiently at varying speeds, making them suitable for applications with fluctuating wind speeds or changing solar angles.
  • Control and Precision: DC motors offer precise control and responsiveness, allowing for accurate tracking and adjustment in wind turbines and solar tracking systems.
  • Reliability: DC motors are known for their reliability, with fewer moving parts compared to other motor types, reducing the risk of failure in remote or harsh environments.
  • Compatibility with Energy Storage Systems: DC motors can easily be integrated with energy storage systems, such as batteries or supercapacitors, to store excess electrical energy generated by wind turbines or solar panels.

In conclusion, DC motors can be effectively utilized in renewable energy systems such as wind turbines and solar tracking systems. Their efficiency, control capabilities, reliability, and compatibility with energy storage systems make them a suitable choice for these applications, contributing to the advancement of sustainable energy generation.

dc motor

Are there safety considerations or maintenance practices associated with DC motors?

Yes, there are safety considerations and maintenance practices associated with DC (Direct Current) motors. DC motors, like any other electrical equipment, require proper handling, maintenance, and adherence to safety guidelines to ensure safe operation and longevity. Here’s a detailed explanation of the safety considerations and maintenance practices associated with DC motors:

Safety Considerations:

Electrical Hazards: DC motors operate with high voltages and currents, posing electrical hazards. It is essential to follow proper electrical safety practices, such as wearing appropriate personal protective equipment (PPE) and ensuring that electrical connections are secure and insulated. Proper grounding and isolation techniques should be employed to prevent electrical shocks and accidents.

Lockout/Tagout: DC motors, especially in industrial settings, may require maintenance or repair work. It is crucial to implement lockout/tagout procedures to isolate the motor from its power source before performing any maintenance or servicing activities. This ensures that the motor cannot be accidentally energized during work, preventing potential injuries or accidents.

Overheating and Ventilation: DC motors can generate heat during operation. Adequate ventilation and cooling measures should be implemented to prevent overheating, as excessive heat can lead to motor damage or fire hazards. Proper airflow and ventilation around the motor should be maintained, and any obstructions or debris should be cleared.

Mechanical Hazards: DC motors often have rotating parts and shafts. Safety guards or enclosures should be installed to prevent accidental contact with moving components, mitigating the risk of injuries. Operators and maintenance personnel should be trained to handle motors safely and avoid placing their hands or clothing near rotating parts while the motor is running.

Maintenance Practices:

Cleaning and Inspection: Regular cleaning and inspection of DC motors are essential for their proper functioning. Accumulated dirt, dust, or debris should be removed from the motor’s exterior and internal components. Visual inspections should be carried out to check for any signs of wear, damage, loose connections, or overheating. Bearings, if applicable, should be inspected and lubricated as per the manufacturer’s recommendations.

Brush Maintenance: DC motors that use brushes for commutation require regular inspection and maintenance of the brushes. The brushes should be checked for wear, proper alignment, and smooth operation. Worn-out brushes should be replaced to ensure efficient motor performance. Brush holders and springs should also be inspected and cleaned as necessary.

Electrical Connections: The electrical connections of DC motors should be periodically checked to ensure they are tight, secure, and free from corrosion. Loose or damaged connections can lead to voltage drops, overheating, and poor motor performance. Any issues with the connections should be addressed promptly to maintain safe and reliable operation.

Insulation Testing: Insulation resistance testing should be performed periodically to assess the condition of the motor’s insulation system. This helps identify any insulation breakdown or degradation, which can lead to electrical faults or motor failures. Insulation resistance testing should be conducted following appropriate safety procedures and using suitable testing equipment.

Alignment and Balance: Proper alignment and balance of DC motors are crucial for their smooth operation and longevity. Misalignment or imbalance can result in increased vibrations, excessive wear on bearings, and reduced motor efficiency. Regular checks and adjustments should be made to ensure the motor is correctly aligned and balanced as per the manufacturer’s specifications.

Manufacturer’s Recommendations: It is important to refer to the manufacturer’s guidelines and recommendations for specific maintenance practices and intervals. Each DC motor model may have unique requirements, and following the manufacturer’s instructions ensures that maintenance is carried out correctly and in accordance with the motor’s design and specifications.

By adhering to safety considerations and implementing proper maintenance practices, DC motors can operate safely, reliably, and efficiently throughout their service life.

China wholesaler CHINAMFG D107L200 Water-Cooled & Water-Resistant Permanent Magnet DC Motor 38kw   vacuum pump electricChina wholesaler CHINAMFG D107L200 Water-Cooled & Water-Resistant Permanent Magnet DC Motor 38kw   vacuum pump electric
editor by CX 2024-04-16