• Changzhou Hetai Motor And Electric Appliance Co., Ltd.
    Rod S****
    I purchased the 3-pack of the smaller steppers for my current ender 3 pro project. For my applications, they work perfectly. It's a great deal for quality motors, and I'm going to purchase another 10 packs.
  • Changzhou Hetai Motor And Electric Appliance Co., Ltd.
    Sam N***
    These are great motors and they are very strong. They are operating quietly, and also need them to release their hold every time a move is complete.
  • Changzhou Hetai Motor And Electric Appliance Co., Ltd.
    Jim S**
    Please develop more low noise gearbox and with better prices, so we can sell your products to more clients and gain larger markets. Thank you.
Contact Person : Nora
Whatsapp : +8618661153149

4000rpm Rated Speed Torque Brushless DC Motor 26Watts Output Power

Place of Origin China
Brand Name Hetai
Certification CE ROHS ISO
Model Number 42BLFS
Minimum Order Quantity 50
Delivery Time 30days

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Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

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Product Details
Peak Torque 0.19N-m Insulation Resistance 100MΩ Min.500V DC
Rated Speed 4000rpm Back EMF 5V/kRPM
Torqueconstant 0.048N-m/Amps Ambient Temperature Range -20℃~+50℃
Output Power 26Watts Insulation Class B
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Model 42BLFS01 42BLFS02 42BLFS03 42BLFS04
Number of Poles 8 8 8 8
Number of Phases 3 3 3 3
Rated Voltage VDC 24 24 24 24
Rated speed RPM 4000 4000 4000 4000
Rated Torque N-m 0.063 0.13 0.188 0.25
Rated Current Amps 2 3.5 5 7
Output Power Watts 26 54 79 105
Peak Torque N-m 0.19 0.39 0.57 0.75
Peak Current Amps 6 10.5 15 21
Torqueconstant N-m/Amps 0.048 0.048 0.048 0.048
Back EMF V/kRPM 5 5 5 5
Rotor inertia g·cm2 24 48 72 96
Body Length (L) mm 40 60 80 100
Mass kg 0.3 0.45 0.6 0.75
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Model 42BLFS01 42BLFS02 42BLFS03 42BLFS04
Product Description

Product Description:

The 42BLFS door motor is a high-performance motor specifically designed for high-end door systems. It features excellent performance parameters and reliable operational stability, making it suitable for various automatic doors, sliding doors, and other applications requiring precise control.


The motor operates at a voltage of 24V and can deliver a high speed of up to 4000 RPM, ensuring quick response and precise control for opening and closing doors.


While delivering exceptional performance, it consumes very low power. With a torque constant of 0.048 N-m/A, it easily handles heavy loads, making it ideal for door operation and other high-torque tasks.


The 42BLFS motor's body length ranges from 40mm to 100mm, and it weighs between 0.3kg and 0.75kg. Its compact and lightweight design makes it easy to install and operate.


The high-quality construction of the 42BLFS ensures it withstands wear and tear from frequent use, with low maintenance requirements. It has a wide operating temperature range, from -20℃ to 50℃, ensuring stable performance in both cold winters and hot summers, adapting to various harsh environmental conditions.


The 42BLFS door motor, with its high performance, high efficiency, and wide environmental adaptability, is the ideal choice for high-end door systems. Its compact and lightweight design, along with robust operational capabilities, ensures stable and superior performance in various complex operating environments.


Technical Parameters:

Torque Constant 0.048 N-m/Amps

Rated Voltage

Rated Current 2 Amps
Peak Current 6 Amps
Peak Torque 0.19 N-m
Hall Effect Angle 120º Electrical Angle
Applications Robotics, Electric Vehicles, Industrial Automation
Winding Type Star
Dielectric Strength 600VAC 1 minute
Rated Speed 4000 rpm

Number of Poles


Number of Phases

Body Length (L) 40mm

Rated Torque


Output Power






Insulation Resistance

100MΩ Min.500V DC

Ambient Temperature Range


Insulation Class



Drawing parameters:cuit:mm

4000rpm Rated Speed Torque Brushless DC Motor 26Watts Output Power 0

Caution 1: Peak Torque is provided for the purpose of performance calculations only. Operate near, or at this condition will result in motor damaged.

Note: We can also manufacture products according to customer's requirements.


The 42BLFS brushless motor is ideal for advanced door systems thanks to its high performance, high efficiency and wide environmental adaptability. Vector control for smooth operation. Running without stuttering and in one go, it changes the traditional way of opening doors to the era of automation.


Its compact and lightweight design as well as its powerful operating capability ensure stable and superior performance in a variety of complex usage environments.


The motor not only enhances the performance of the door control system, but also increases the reliability of the system and the user experience, making it an excellent choice for high-end door control solutions.


4000rpm Rated Speed Torque Brushless DC Motor 26Watts Output Power 1




Which motor components can be customized?

Additional custom parts include: custom shafts, standard shafts, keyed shafts, D-cut shafts, threaded shafts, etc.


① Custom shafts

② Custom flanges, including flange shape and flange mounting holes

③ Custom performance

④ Custom IP rating

⑤ Custom insulation class

⑥ Custom cables

⑦ Custom connectors

⑧ Custom encoders

⑨ Custom integrated drives and brakes

4000rpm Rated Speed Torque Brushless DC Motor 26Watts Output Power 2

Support and Services:

Our brushless DC motor products offer comprehensive technical support and service to ensure the best customer experience. Professional technical team can provide assistance in motor design, installation, configuration and troubleshooting.


According to customer needs, provide detailed product specifications, functions, applicable scenarios and other information personalised product recommendations and customised solutions to answer customer questions about product technology, provide professional technical support.


Through the above multi-faceted support and services, you can enhance customer satisfaction and loyalty, and establish a long-term stable relationship.