Coreless Brushless Motor 12mm Micro DC Motor 5-12V BDCL1220 BODENMOTION

Overview of BDCL1220 Coreless Brushless DC Motor

The BDCL1220 coreless brushless DC motor is designed for OEM applications requiring compact dimensions, stable high-speed operation, and maintenance-free performance. With a Φ12 × 20 mm body and a weight of only 9.5 g, it provides an excellent balance between lightweight construction and reliable brushless operation for miniature motion systems.

Supporting 5V, 7.4V, and 12V configurations, the BDCL1220 delivers rated speeds of 21080–21420 rpm with a power range of 1–1.5W. Its brushless architecture eliminates brush wear while maintaining smooth operation and stable efficiency, making it suitable for portable equipment, precision instruments, compact automation devices, and embedded OEM drive systems.

Key Features of BDCL1220 Compact Coreless Motor

• Coreless Rotor Design – Low rotor inertia enables rapid acceleration and responsive speed control.
• Brushless Commutation – Eliminates brush wear for maintenance-free operation and extended service life.
• Stable High-Speed Performance – Rated speeds exceed 21000 rpm for fast-response miniature drive applications.
• Compact Φ12 × 20 mm Structure – Fits embedded systems where installation space is limited.
• Lightweight Construction – Only 9.5 g, helping reduce overall system weight in portable equipment.
• Multiple Voltage Options – Available in 5V, 7.4V, and 12V versions for different power architectures.
• Optional Planetary Gearbox – Available for applications requiring higher output torque and lower operating speed.

Technical Specifications of BDCL1220 Micro Coreless BLDC Motor

All values are nominal. Actual performance may vary depending on load, controller settings, operating temperature, and installation conditions.

Motor Model	Unit	BDCL1220-01	BDCL1220-02	BDCL1220-03
Value at Rated Voltage
At Nominal
Nominal Voltage	V/DC	5	7.4	12
Nominal Speed	rpm	21250	21080	21420
Nominal Current	A	0.28	0.17	0.11
Nominal Torque	mN·m	0.32	0.33	0.34
Free Load
No-load Speed	rpm	25000	24800	25200
No-load Current	mA	100	50	30
At Max. Efficiency
Max. Efficiency	%	52.2	57.8	59.1
Speed	rpm	17875	17732	20412
Current	A	0.442	0.284	0.131
Torque	mN·m	0.60	0.60	0.43
At Max. Output Power
Max. Output Power	W	1.4	1.4	1.5
Speed	rpm	12500	12400	12600
Current	A	0.70	0.50	0.30
Torque	mN·m	1.10	1.10	1.14
At Stall
Stall Current	A	1.30	0.87	0.56
Stall Torque	mN·m	2.10	2.20	2.28
Motor Constants
Terminal Resistance	Ω	3.85	8.51	21.43
Terminal Inductance	mH	0.188	0.258	0.566
Torque Constant	mN·m/A	1.76	2.69	4.30
Speed Constant	rpm/V	5000	3351	2100
Speed/Torque Constant	rpm/mN·m	11817	11261	11048
Mechanical Time Constant	ms	12.67	10.26	10.07
Rotor Inertia	g·cm²	0.10	0.09	0.09
Number of Pole Pairs	—	1	1	1
Number of Phases	—	3	3	3
Weight	g	9.5	9.5	9.5
Typical Noise Level	dB	≤50	≤50	≤50

Not sure how to interpret model differences? See the model code breakdown below ↓

Motor Model Number Breakdown

Mechanical Design & Installation Notes

Proper installation helps maintain stable high-speed operation, reduce vibration, and maximize service life during OEM integration.

Compact Motor Structure
The BDCL1220 features a Φ12 × 20 mm cylindrical housing, making it suitable for miniature assemblies where installation space and weight are tightly controlled.

Bearing & Shaft Support
Axial play is 0.05–0.15 mm, radial play is ≤0.015 mm, maximum dynamic axial load is 0.8 N, maximum radial load (5 mm from the flange) is 8 N, and maximum static press-fit force is 10 N. Correct shaft alignment helps maintain bearing life and stable operation.

Operating Environment
Recommended ambient temperature is -20°C to +80°C, with relative humidity below 90% RH (25°C). Maximum rotor temperature should not exceed 85°C.

Bearing & Gearbox Options
Ball bearing or sleeve bearing configurations are available, and an optional planetary gearbox can be supplied for higher torque applications.

OEM Customization Options – BDCL1220 Coreless Motor

Customizable parameters are available to support application-specific integration and OEM development.

Customization Item	Available Options / Description
Voltage	Configurable according to system requirements
Speed Curve	Optimized for different operating conditions
Shaft Type	Straight shaft, D-cut shaft, or custom-machined shaft
Shaft Length	Customized according to installation requirements
Bearing Option	Ball bearing or sleeve bearing available
Gearbox Option	Optional planetary gearbox
Wiring / Cable Length	Custom lead wire length and routing
Connector Type	Bare wire, JST, Molex, or customized connectors
Wire Sequence	Motor phase sequence configurable for controller compatibility
Mounting Interface	Mechanical adaptation for OEM assemblies

Application Fields of BDCL1220 Coreless Brushless Motor

From an OEM perspective, the BDCL1220 is suitable for compact systems requiring lightweight construction, reliable brushless operation, and stable high-speed performance.

• Portable Medical Devices – Compact motion systems for handheld and battery-powered equipment.
• Laboratory & Analytical Instruments – Stable high-speed drive for precision testing equipment.
• Industrial Automation – Embedded drive units for compact automation modules.
• Consumer Electronics – Internal drive solutions for smart electronic products.
• Optical & Precision Equipment – Smooth rotational performance for miniature positioning systems.

Why Choose BODENMOTION for Your Compact Brushless Motor Project

For miniature OEM equipment, selecting a brushless motor is not only about achieving high speed. Driver compatibility, installation space, long-term reliability, and stable production all influence the success of the final product.

• Compact Brushless System Matching – We help evaluate motor size, operating voltage, controller compatibility, and application requirements to simplify motor selection.
• Embedded Integration Support – Shaft dimensions, wiring, connectors, and mounting interfaces can be customized for compact assemblies with limited installation space.
• Cost-Effective Alternative to Premium Brands – We provide practical replacement options for internationally recognized coreless motor platforms while helping reduce procurement and project costs.
• Prototype Validation Assistance – Sample motors can be evaluated under actual speed, load, and operating conditions before production decisions are made.
• Long-Life Brushless Solution – Brushless architecture reduces maintenance requirements while improving reliability for high-cycle OEM equipment.
• Stable Supply for OEM Production – Consistent manufacturing supports a smooth transition from prototype approval to long-term volume supply.

Customer Feedback

Germany | Laboratory Equipment Manufacturer
Application: miniature testing instrument
Feedback: Stable high-speed performance simplified integration into a compact measurement platform.

Japan | Precision Equipment OEM
Application: optical positioning module
Feedback: The compact brushless design reduced maintenance requirements while improving long-term stability.

United States | Portable Device Developer
Application: embedded drive system
Feedback: Lightweight construction and smooth operation accelerated prototype development.

Downloads – Datasheet

[BDCL1220 Coreless Brushless DC Motor Specification (PDF)]

FAQ – BDCL1220 DC Motor

Q1: Why does the motor not reach the expected speed after installation?

A1: Actual speed depends on controller settings, supply voltage, mechanical load, and transmission efficiency. Reviewing the complete drive system usually provides a more accurate assessment than evaluating the motor alone.

Q2: How can vibration be reduced in compact high-speed applications?

A2: Stable mounting, proper shaft alignment, balanced couplings, and suitable bearing support all help minimize vibration and improve long-term operating stability.

Q3: When should I choose the BDCL1220 instead of a brushed coreless motor?

A3: The BDCL1220 is recommended for applications requiring maintenance-free operation, extended service life, and stable performance under frequent or continuous operating cycles.

Q4: Does BODENMOTION provide bulk order discounts?

A4: Yes. We offer volume pricing for OEM projects. The discount structure depends on order quantity, customization requirements, and long-term cooperation plans. Please contact our sales team for detailed quotations.

Q5: Is there a higher-speed brushless alternative available?

A5: Yes. The BDCL1020 is recommended for applications requiring significantly higher rotational speed. Compared with the BDCL1220, it delivers much higher operating speed while maintaining the advantages of a compact coreless brushless motor.

Contact BODENMOTION – OEM Coreless Brushless Motor Solutions

If you are developing portable equipment, precision instruments, compact automation systems, or embedded motion devices, BODENMOTION provides engineering support from motor selection through customization and long-term OEM production.

What We Can Provide

• Application-Based Motor Selection – Recommend suitable motor configurations based on speed, torque, voltage, installation space, and operating conditions.
• Brushless Motor Customization – Support customization of shafts, lead wires, connectors, gearboxes, and mechanical interfaces.
• Engineering Validation Support – Assist with prototype testing, controller matching, and system integration optimization.
• Cost-Effective Replacement Solutions – Provide practical alternatives to internationally recognized motor brands while maintaining reliable performance.
• Flexible Sample & Production Supply – Fast sample support and stable manufacturing capacity for OEM projects of different scales.
• Long-Term Technical Partnership – Support your engineering team throughout product development and volume production.

📧 Email: info@bodenmotion.com
🌐 Website: https://bodenmotion.com