China factory SL23 72V 3000W MID Drive DC Motor with Four Speed Gear Box for Electric Dirt Bike, ATV and Golf Cart vacuum pump brakes

Product Description


Efficient,Reliable BLDC Motor

SL 72V 3000W MID Drive DC Motor with Four Speed Gear Box for Electric Dirt Bike, ATV and Golf Cart

Company Profile

We are leading manufacturer of general-purpose brushless dc (BLDC) motors with power range from 1000W to 5000W, and the voltage range from 48Vto 96V DC. It has been widely used for many applications, e.g. auto industry, battery powered Dirt bikes, scooters, electric cars, forklifts, golf buggies, boats, etc. It has better performances than other traditional dc motors.


Product Parameters


Model SL23
Rated Power/W 3000W
Rated Voltage/V 60V/72V/84V
Idle current/A  4.2-7.8
Rpm 3000-6000
Rated torque/NM 45570
Motor Efficiency 90/%
Primary Speed Ratio  3.27:1,1.94:1,1.35:1,1.04:1 
Frame Size H56-400
Poles 5 poles
Motor Phase Angle:  120 degree
Gear Postion:  step on 4 gear,check back gear,international gear
Clutch method:  Manul/Auto

Detailed Photos

Motor Schematic Diagram

Motor Installation example


Packaging & Shipping



1) What certificates are available for your adult electric dirt bike? Does your factory offer EEC and COC Paper file?
A: For the certificate, we have ISO 9001, CE, EEC, COC Paper.

2) What is your MOQ? Can I just order 1 or 2 sample bikes and how long will it take?
A: Sure. we do offer sample bikes (2 or 4 units) for wholesalers and motorsports dealer. Usually, it takes About 5-7 working days to arrange the sample bikes. And about 30-45 days arrive your front door. It depends on your country and location

3) Do you accept OEM Dirt Bikes for my company? Can I have my own customized logo decals on the e-bikes?
A: Sure, OEM service can be accepted. Your customized requirements for logo, color, design, package, your language manual etc. This needs MOQ, feel free to ask us for more details.

4) What’s the MOQ for customized bikes decals or stickers?
A: Our MOQ is 50 sets, contact our OEM service person for more details.

5) How long is the dirt bike order production leading time?
A: The production date of sample order is within 5-7 working days, and the production date of bulk order needs to ask our sales staff.

6) What’s the delivery time?
A: It takes about 30-45 days for shipment to the EU.
It takes about 25-35 days for shipment to the USA.
It takes about 25-30 days for shipment to the AU.

7) What kind terms of payment can be accepted?
A: Bank Transfer, WISE, Western Union, Paypal,RMB account and so on.(Contact with customer our service.) After payment, please tell us your details address, zip code and phone NO. We will deliver bikes for you ASAP.

8) How does your bike factory carry out quality control?
A: We attach great importance to quality control. Every part of our products has its own QC department. Each item will go through 3 quality inspections before departure, and it will be allowed to send out only after it has obtained a certificate of conformity.

9): What is the bike warranty?
A: Our warranty time is 12 months from date of machine arriving at your destination port.
10) Why is the price offered by your salesperson different from what you advertised?
A:We sincerely tell you that our price is generally the FOB price, and the price is the unit price of the minimum configuration of the product. So sometimes your needs may be different configurations and different quantities, so we need to give the final best price according to your requirements. Thank you for your understanding, because it is only when the advertised price is lower that we have a very valuable opportunity to get in touch with you.

11) How do you make our business long-term and good relationship?
A:1. We keep good quality, good aftersales service and competitive price to ensure our customers’ benefits;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

12) Where is your company located? How can I visit there?
A: Our factory is located in ZheJiang Province, near HangZhou international airport for about 1.5 hours driving. Welcome to visit us!

Why Cooperate with Us?

1) We are a regular professional factory that can provide all type of electric dirt bikes, bike spare parts and all technical services. We can directly establish stable cooperative relationships with customers, grow and develop together to expand markets, develop steadily, and have long-term cooperation.

2) It has various import and export qualifications certified by international authoritative organizations and officially registered by the government. It can provide stable and high quality dirt motorcycles and can continue to provide customers with high-performance and high-quality electric off-road motorcycles and ebikes

3) You can directly establish contact with factory service personnel, without middleman. Customers can participate in our ebikes improvement team, and solve problems encountered quickly and efficiently.

4) All motorcycle or bike parts are complete and sufficient, and we can continue to provide customers with complete vehicle and subsequent replacement parts services and technical consultation.

5) Technical consultation is permanently free

6) We can accept OEM OED customization services according to customer requirements.


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Application: Universal, Industrial, Household Appliances, Car, Dirt Bike
Operating Speed: High Speed
Excitation Mode: Permanent Magnet
Function: Control, Driving
Casing Protection: Protection Type
Number of Poles: 5
US$ 520/Piece
1 Piece(Min.Order)




dc motor

What are the key differences between brushed and brushless DC motors?

Brushed and brushless DC motors are two distinct types of motors that differ in their construction, operation, and performance characteristics. Here’s a detailed explanation of the key differences between brushed and brushless DC motors:

1. Construction:

Brushed DC Motors: Brushed DC motors have a relatively simple construction. They consist of a rotor with armature windings and a commutator, and a stator with permanent magnets or electromagnets. The commutator and brushes make physical contact to provide electrical connections to the armature windings.

Brushless DC Motors: Brushless DC motors have a more complex construction. They typically consist of a stationary stator with permanent magnets or electromagnets and a rotor with multiple coils or windings. The rotor does not have a commutator or brushes.

2. Commutation:

Brushed DC Motors: In brushed DC motors, the commutator and brushes are responsible for the commutation process. The brushes make contact with different segments of the commutator, reversing the direction of the current through the armature windings as the rotor rotates. This switching of the current direction generates the necessary torque for motor rotation.

Brushless DC Motors: Brushless DC motors use electronic commutation instead of mechanical commutation. The commutation process is managed by an external electronic controller or driver. The controller determines the timing and sequence of energizing the stator windings based on the rotor position, allowing for precise control of motor operation.

3. Efficiency:

Brushed DC Motors: Brushed DC motors tend to have lower efficiency compared to brushless DC motors. This is primarily due to the energy losses associated with the brushes and commutation process. The friction and wear between the brushes and commutator result in additional power dissipation and reduce overall motor efficiency.

Brushless DC Motors: Brushless DC motors are known for their higher efficiency. Since they eliminate the use of brushes and commutators, there are fewer energy losses and lower frictional losses. The electronic commutation system allows for precise control of the motor’s operation, maximizing efficiency and reducing power consumption.

4. Maintenance:

Brushed DC Motors: Brushed DC motors require regular maintenance due to the wear and tear of the brushes and commutator. The brushes need periodic replacement, and the commutator requires cleaning to maintain proper electrical contact. The maintenance requirements contribute to additional costs and downtime for brushed DC motors.

Brushless DC Motors: Brushless DC motors have a relatively maintenance-free operation. As they do not have brushes or commutators, there is no need for brush replacement or commutator cleaning. This results in reduced maintenance costs and increased reliability of brushless DC motors.

5. Speed Control:

Brushed DC Motors: Brushed DC motors offer simpler speed control options. The speed can be controlled by adjusting the applied voltage or by varying the resistance in the armature circuit. This allows for relatively straightforward speed regulation.

Brushless DC Motors: Brushless DC motors provide more advanced and precise speed control capabilities. The speed can be controlled through the electronic commutation system by adjusting the timing and sequence of the stator windings’ energization. This allows for precise control of the motor’s speed and acceleration.

These key differences between brushed and brushless DC motors make each type suitable for different applications depending on factors such as efficiency requirements, maintenance considerations, and control complexity.

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 factory SL23 72V 3000W MID Drive DC Motor with Four Speed Gear Box for Electric Dirt Bike, ATV and Golf Cart   vacuum pump brakesChina factory SL23 72V 3000W MID Drive DC Motor with Four Speed Gear Box for Electric Dirt Bike, ATV and Golf Cart   vacuum pump brakes
editor by CX 2024-04-12


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