12V DC RK-370 Motor Worm Gear Shaft Electric Motors 4700RPM Car AV Actuator CE

Model: RK-370CB-15270

Lihua Motor has specially developed the RK-370CB-15270 12V DC motor for automotive air conditioning damper actuator applications. This motor is designed to meet the stringent requirements of HVAC systems in modern vehicles, offering high torque, low noise, and stable performance across varying voltage ranges. It is a compact and reliable solution, ideal for ensuring precise airflow regulation and long-term operational durability.

Technical Specifications

• Motor Model: RK-370CB-15270
• Shaft Type: Worm Gear Shaft
• Output Shaft Diameter: 2mm
• Output Shaft Length: 20.3±0.5mm
• Motor Body Diameter: 24.4±0.2mm
• Motor Body Length: 30.8±0.15mm
• Front Step Diameter: 6.4±0.1mm
• Front Step Height: 1.7±0.1mm
• Operating Voltage Range: DC11V – 13V
• Rated Voltage: 12V
• No-load Speed: 4500±450 RPM
• No-load Current: 80mA
• Rated Load Speed: 3150±315 RPM
• Rated Load Current: Max 650mA
• Rated Load Torque:130 g.cm
• Starting Torque / Stall Torque: 420 g·cm
• Insulation Resistance: Minimum 10.0 MΩ

Mechanical Design and Dimensions

The RK-370CB-15270 motor features a precision-engineered compact body with a worm gear output shaft that ensures seamless integration into automotive HVAC systems. The high-precision machining of the motor components guarantees long-term stability and durability. All dimensional tolerances not otherwise specified default to ±0.3mm. The motor surface is clean and free from significant scratches or dents, adhering to Lihua Motor’s strict appearance quality standards.

Key Performance Advantages

1. Excellent Voltage Adaptability

Designed to operate efficiently within a DC11V–13V range, this motor remains stable even under fluctuating vehicle voltage conditions. This ensures uninterrupted operation and reliable performance during dynamic driving scenarios.

2. High Torque Output

The RK-370CB-15270 delivers a starting (stall) torque of 420 g·cm, making it ideal for damper actuation applications. This strong torque allows the motor to operate HVAC dampers smoothly and maintain accurate airflow regulation, a critical factor in vehicle climate control systems.

3. Energy-Efficient Operation

With a no-load speed of 4500 RPM and a rated load speed of 3150 RPM, the motor performs efficiently under both idle and load conditions. The low no-load current of 80mA and maximum load current of 650mA help to minimize energy consumption, contributing to overall system efficiency.

4. Low Noise Design

Noise generated by electric motors can significantly affect vehicle cabin comfort. Lihua Motor has incorporated a specially optimized noise reduction structure in the RK-370CB-15270 motor. This ensures a quiet and smooth operation, enhancing passenger comfort throughout the product’s service life.

5. Compact & Durable Structure

Thanks to its worm gear shaft, precise shaft dimensions, and compact motor housing, the RK-370CB-15270 motor is easy to integrate into HVAC assemblies. The design ensures long-lasting durability and dependable performance, even in demanding automotive environments.

6. Reliable Insulation Resistance

With a minimum insulation resistance of 10.0 MΩ, the motor offers high electrical safety and insulation integrity, ensuring stable performance even under extreme conditions such as temperature fluctuations and humidity exposure.

Why Choose Lihua Motor?

• ✅ Customized Motor Solutions: At Lihua Motor, we specialize in tailoring motor designs to meet specific industry requirements. The RK-370CB-15270 motor is a prime example of how we engineer solutions for automotive air conditioning damper actuators with precise torque, speed, and structural specifications.
• ✅ High Cost-Performance Ratio: Compared to other leading brands like Mabuchi Motors, our RK-370CB-15270 offers comparable or superior performance at a more competitive price, helping customers reduce costs without compromising quality or reliability.
• ✅ Stringent Quality Control: Our motors are manufactured using premium raw materials and undergo a rigorous quality control process, ensuring consistency, reliability, and long-term performance.
• ✅ Low Noise, Enhanced Comfort: With an advanced noise suppression structure, the motor operates quietly, improving the overall experience for end-users, especially in passenger vehicles where comfort is critical.
• ✅ Proven Industry Application: The RK-370CB-15270 motor has been widely adopted by HVAC system manufacturers in the automotive sector, receiving positive feedback for its performance, reliability, and integration simplicity.

Frequently Asked Questions (FAQs)

Q1: What is an HVAC Damper Actuator?
An HVAC damper actuator is a motorized component used in heating, ventilation, and air conditioning systems. It controls the opening and closing of dampers — mechanical devices that regulate airflow in the ductwork. Actuators receive control signals from the HVAC system to adjust airflow direction and volume, helping to maintain desired temperature zones and improve energy efficiency.

Q2: Is This Motor Used in My Damper System?
If your HVAC system uses a motorized damper, it likely includes a small electric motor like the RK-370CB-15270. This motor is commonly employed in automotive HVAC systems. To confirm compatibility, refer to your HVAC system’s specifications or consult the equipment manufacturer.

Q3: How Does the RK-370CB-15270 Compare to Mabuchi Motors?
The RK-370CB-15270 motor by Lihua Motor serves as a high-quality, cost-effective alternative to Mabuchi motors. Key advantages include:

• Comparable torque and voltage performance (starting torque of 420 g·cm and 11–13V operating range).
• Lower operating noise due to advanced noise reduction design.
• High durability and precision engineering.
• Competitive pricing without compromising functionality or reliability.

Lihua Motor’s RK-370CB-15270 worm gear DC motor represents a smart, robust solution for modern automotive HVAC damper actuator applications. With its combination of high torque, energy efficiency, low noise, and exceptional reliability, it is an ideal choice for manufacturers looking to optimize climate control systems in vehicles. Whether you’re replacing an existing motor or developing a new HVAC module, Lihua Motor provides not only premium-quality motors but also expert support and customization services to meet your specific needs.

Interested in a quote or samples? Contact us today for more information and technical assistance.

Guang Dong Lihua Mechatronics Co., Ltd.(Lihua Motor) was founded in May 2003, formerly Shen Zhen Hua Chuang Sheng Motor Co., Ltd.  (HCS Motors) 

In order to expand its business, it relocated from Shenzhen to Humen Town (Dongguan City) in October 2017. Lihua is a manufacturer of high-quality DC motors integrates professional development, production and sales, offering a wide range of DC motors, including brushed and brushless motors, geared motors,stepper motor. We has been at the forefront of motor manufacturing and customizing for 20 years, consistently delivering high-performing and reliable products to clients worldwide.

These motors are designed for various applications, including industrial equipment, medical devices, robotics, automotive systems, motor vehicle and more. We also provides Customized DC Motor Solutions to meet specific customer needs.