4mm Coreless DC Motor – 12mm Type Model NFP-D0412-3978


4mm Motor Small Volume Motor Price (USD)

1+ $3.00
100+ $2.20
1,000+ $1.10

Contact us for a quotation for production quantities, customizations and integration.

Shop 4mm DC Micro Motor NFP-D0412-3978 Parameters

4mm diameter, 3.7V DC micro motor, high speed coreless motor for model aircraft, electric toys, it can be equipped with eccentric rotating mass. Tiny size, light weight 1 gram, durable, practical and convenient to use in many applications. Low power consumption.

Motor model: NFP-D0412-3978
Rated voltage: 3.7V
No-load speed: 65,000 ± 10%rpm
No-load current: <60mA
Motor diameter: 4.08mm ± 0.05mm
Shaft length: 1.7mm ± 0.3mm
Total length: 14.7mm ± 0.3mm
Motor body length: 12.1mm ± 0.2mm
Resistance 100V: >5MΩ
Rotation: CCW
Stall current: <600mA
Start voltage: <0.8V


Types Of Micro Motors 4mm Motor Outline Drawing

Coreless motors ,compact, convenient and easy to install. Lowest cost for best item. 100% brand new and high quality.



Same Size More Options

If you want to get more coreless dc motors of this size with different parameters, you can get in touch through the form at the bottom. Or contact us if you want to get the above performance 4mm coreless dc motor.

Model NFP-D0412-3978-1-3.7 NFP-D0412-3978-2-3.0
Voltage 3.7V 3V
Terminal resistance 5.3Ω 2.8Ω
No-load-speed 78,000rpm 86,000rpm
No-load-current 53mA 25mA
Stall torque CW2.59g.cm CW2.88g.cm
Stall current 700mA 1,070mA
Max output power 0.519W 0.635W
Max efficiency 49% 49%
Torque constant 4g.cm/A 2.9g.cm/A
Rotor inertia <0.01g.cm² <0.01g.cm²
Weight 0.7g 0.7g


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1.Payment methods : Paypal, T/T

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.

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.

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If you want a custom lead wire connection of the water resistant vibration motors. Such as alternate lead wire length & strip lengths, with a connector (e.g. Molex, JST). You can contact us from the footer form, tell us your need. Any problems will be taken seriously and will be answered professionally, so pls do not hesitate to contact us by the footer form.


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