20mm Micro DC Motor – 25mm Type Model TSL-RS-140RA
♦ Basic Info:
- Motor Type: Brushed DC Motor
- Motor Diameter: 21 mm
- Motor Length: 25 mm
- Shaft Diameter: φ 2.0 mm
- Rated Voltage: 1.2 V
- Rated Speed: 4481 RPM
- Output Power: 0.3 W
- Output Torque: 6.58 g·cm
- #More Specifications
Typical application:
- micro fan, toys, nail polisher
DC Small Electric Fan Motor Technical Datasheet
The RS-140RA is a permanent magnet DC small electric fan motor. It features metal brushes and ferrite magnets. At a rated voltage of 1.2V, it achieves a no-load speed of 6000rpm. This ensures fast response and stable output. It’s perfect for model trains and toy cars. It meets their needs for quick starts and continuous operation.
Compact Design, Reliable Performance
This small electric fan motor boasts a compact structure. It weighs only about 20g. The maximum stall torque reaches 20g·cm. It offers good resistance capacity. It handles occasional mechanical jams. The small electric fan motor also manages slight resistance loads. The operating noise is low, not exceeding 60dB. This allows for basic comfort in quiet environments.
We can optimize and customize the small electric fan motor. This ensures strong, reliable power for different products. It meets many customer needs.
| Motor Model | Voltage | No Load | At Maximum Efficiency | Stall | |||||||
| Operating Range | Nominal | Speed | Current | Speed | Current | Torque | Output | Torque | Current | ||
| r/min | A | r/min | A | g·cm | W | g·cm | A | ||||
| TSL-RS-140RA-2270 | DC 1.5-3.0V | DC 1.5V | 8100 | 0.21 | 6150 | 0.66 | 6.7 | 0.42 | 28 | 2.1 | |
| DC 3.0V | 14200 | 0.25 | 11320 | 0.98 | 10.6 | 1.24 | 53 | 3.87 | |||
| TSL-RS-140RA-18100 | DC 1.5-3.0V | DC 1.5V | 5700 | 0.13 | 4230 | 0.37 | 4.9 | 0.21 | 19 | 1.07 | |
| DC 3.0V | 10900 | 0.16 | 8520 | 0.57 | 8.1 | 0.71 | 37 | 2.04 | |||
- lbf⋅ft= 1.3558179483314004 N⋅m
- 1pdl⋅ft = 4.21401100938048×10−2 N⋅m
- lbf⋅in== 0.1129848290276167 N⋅m
- 1kgf⋅m== 9.80665 N⋅m
Small Electric Fan Motor Outline Drawing
Unless otherwise stated, all dimensions are in millimeters. The provided drawings are for illustrative purposes; please contact us to verify precise specifications

Keywords:
high speed dc motor,140 dc motor,small electric fan motor,3v mini dc motor,small electric motor repair near me,electric motors for fans
Development Samples:
If you need samples, please contact us.
Engineering & Manufacturing:
Contact any or the Sales Engineers for a quotation for production or consultation on the integration and customization of your product.
Payment:
1.Payment methods : Paypal, T/T
Shipping:
1.Delivery: DHL/FedEx 3-5 days.
2.Item will be shipped within 1-3 business days after the payment.
3.If you haven’t received the item on the Delivery Time, pls contact us by email if you have any questions. Normally, we will give you a reply within 24 hours, if not, pls check the spam of your email box. We will do our best to help you solve the problems.
4.Please make sure your address is matched with the finally shipping address before you pay.
FAQ
Q:Could you send me a quote/price list?
A:All of our motors are customized according to the specific needs of the customer, including life, noise level, voltage, shaft specifications, etc., and the price will vary according to the number of years, so it is difficult for us to provide a price list.
If you can tell us your detailed requirements and annual quantity, we will offer you a reasonable price for both parties.
Q: If customized, what information should you provide?
A: You need to provide the basic specification of the motor, such as: Dimensions, Sizes Applications, Voltage, Speed and Torque. It’s better to offer application prototype drawings to us if possible.
Q: What’s your main motors?
A: Diameter 4mm~42mm Dc Micro Motor And Gear Motor, Auto Dc Motor, Electric Motor, Gear Motor, Mini Dc Motor, Brush Dc Motor, Brushless Dc Motor, Spur Gear Motor, Micro Motor, Vibration Motor Etc.
Q: What’s the main application of the micro dc motor?
A: Our mini DC motors are widely used in Home Applications, Office Equipment, Health-Care Application, Sanitation Industry, High-Class Toy, Banking System, Electronic and Electrical Tools, Automation Industry, Bank Equipments, Payment Equipments, Vending Machines, Power Door Lock, Electric Door Lock.
Tap:If you request a quotation for mass production quantities, contact us for customizations and integration.
Motor Customization Guide
Please tell us your requirements. Our engineers will give you the best solution for your application.
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