Coreless Precious Metal DC Motor Ø12×19mm Up to 17,000 RPM High-Speed | BDCM1219 BODENMOTION

Overview of BDCM1219 Coreless Brushed DC Motor

The BDCM1219 coreless precious metal brushed DC motor is a compact low-power drive solution for OEM systems requiring high-speed response, low starting voltage, and lightweight motion control. With a Φ12 × 19 mm body size and 11.5 g weight, it fits miniature electromechanical systems where space and mass are tightly limited.

Operating across 4.5V, 12V, 15V, and 24V platforms, the BDCM1219 delivers rated speeds of 9120–12000 rpm and rated torque of 1.4–2.7 mN·m. Its precious metal brush design supports lower electrical noise and better low-voltage starting behavior, making it more suitable for light-load and intermittent-duty applications than heavy-load continuous operation.

Key Features of BDCM1219 Precious Metal Brushed Motor

• Coreless Rotor Design – Reduces rotor inertia and improves response speed in compact motion systems
• Precious Metal Brush Structure – Supports low electrical noise and smoother operation in low-current applications
• Low Starting Voltage Capability – Helps improve startup behavior in battery-powered and portable devices
• High-Speed Operation – Rated speeds up to 12000 rpm and no-load speeds up to 17000 rpm support fast micro-drive response
• Ultra-Lightweight Construction – 11.5 g motor weight helps reduce system mass in compact OEM assemblies
• Compact Φ12 × 19 mm Size – Suitable for miniaturized devices with strict installation space limits
• Optional Planetary Gearbox – Available for applications requiring lower speed and higher output torque

Technical Specifications of BDCM1219 Coreless DC Motor

All values are nominal. Actual performance may vary depending on load, duty cycle, driver setting, and operating environment.

Motor Model	Unit	BDCM1219-01	BDCM1219-02	BDCM1219-03	BDCM1219-04
At Nominal
Nominal voltage	V/DC	4.5	12	15	24
Nominal speed	rpm	10800	9120	10800	12000
Nominal current	A	0.4	0.2	0.2	0.2
Nominal torque	mNm	1.4	1.5	1.8	2.7
Free Load
No-load speed	rpm	15000	17000	17000	16000
No-load current	mA	45.0	30.0	20.0	12.0
At Max. Efficiency
Max. efficiency	%	70.1	72.7	70.4	74.0
Speed	rpm	12900	14790	14620	14080
Current	A	0.3	0.2	0.1	0.1
Torque	mNm	0.6	0.5	0.5	0.4
At Max. Output Power
Max.output power	W	1.8	1.7	1.7	1.5
Speed	rpm	7500	8500	8500	8000
Current	A	0.9	0.6	0.3	0.2
Torque	mNm	2.3	1.9	1.9	1.8
At Stall
Stall current	A	1.70	1.15	0.58	0.41
Stall torque	mNm	4.6	3.7	3.7	3.5
Motor Constants
Terminal resistance	Ω	2.65	5.22	20.69	36.59
Terminal inductance	mH	0.110	0.250	0.480	0.600
Torque constant	mNm/A	2.79	3.30	6.57	8.78
Speed constant	rpm/V	3333.3	2833.3	1416.7	1066.7
Speed/torque constant	rpm/mNm	3249.8	4583.2	4582.2	4534.3
Mechanical time constant	ms	4.9	8.0	8.0	7.1
Rotor inertia	gcm²	0.14	0.17	0.17	0.15
Number of pole pairs	—	1	1	1	1
Number of phase	—	5	5	5	5
Weight of motor	g	11.5	11.5	11.5	11.5
Typical noise level	dB	≤38	≤38	≤38	≤38

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

Motor Model Number Breakdown

 

OEM Customization Options – BDCM1219 Mini DC Motor

Customizable parameters are available to support system-level integration and application-specific performance requirements.

Customization Item	Available Options / Description
Voltage	Configurable according to system voltage and control requirements
Speed Curve	Motor speed characteristics can be adjusted for specific load conditions
Shaft Type	Straight shaft, D-cut shaft, or custom-machined shaft options available
Shaft Length	Custom shaft length based on mechanical assembly requirements
Gearbox Option	Planetary gearbox available for speed reduction and torque increase
Wiring / Terminal	Terminal and wiring configuration can be adapted for assembly design
Connector Type	Bare wire or customized connector options available
Mounting Interface	Mechanical interface support for compact OEM installation
Noise Optimization	Low-noise configuration support for precision and portable devices
Brush System	Precious metal brush configuration for low-noise and low-voltage operation

Application Fields of BDCM1219 Low-Voltage DC Motor

From an OEM perspective, the BDCM1219 is suitable for compact systems requiring lightweight structure, low starting voltage, and high-speed micro-drive performance.

• Portable Medical Devices – Supports compact motion modules in handheld or battery-powered equipment
• Precision Instruments – Provides smooth low-vibration drive for small measurement and control systems
• Micro Actuation Systems – Suitable for lightweight mechanical movement in compact assemblies
• Smart Electronic Devices – Enables internal motion functions where size and noise are key concerns
• Miniature Gear Drive Systems – Can be paired with a planetary gearbox for lower speed and higher torque output

Why Choose BODENMOTION for Your Low-Voltage Coreless Motor Project

In compact OEM systems, reliable startup, low electrical noise, and limited installation space often matter more than peak output alone. BODENMOTION helps customers evaluate these factors early so the motor can be integrated with fewer performance and validation risks.

• Low-Voltage Startup Review – We help assess battery condition, startup current, load torque, and voltage drop to improve starting reliability in portable and battery-powered equipment.
• Noise-Sensitive Application Support – Brush configuration, installation stress, and mechanical alignment are considered to help maintain smooth and quiet operation in precision systems.
• Lightweight System Matching – The BDCM1219 is evaluated against actual size, weight, and load limits so customers can avoid unnecessary motor oversizing.
• Cost-Effective Alternative to Premium Brands – We provide practical replacement options for internationally recognized coreless motor platforms while helping reduce procurement and project costs.
• Gearbox and Mechanical Integration Support – Shaft dimensions, planetary gearbox options, wiring, connectors, and mounting interfaces can be adapted to simplify installation.
• Flexible Validation and Supply Support – Samples, small-batch testing, and long-term OEM production are supported according to different project stages.

Customer Feedback

Germany | Portable Instrument Manufacturer
Application: compact handheld device
Feedback: Low starting voltage and smooth operation helped improve motion response in a battery-powered system.

Japan | Precision Equipment OEM
Application: micro adjustment mechanism
Feedback: The low noise level and lightweight structure supported stable operation in a compact measurement module.

United States | Medical Device Developer
Application: portable diagnostic equipment
Feedback: The compact size and low-current operation made the motor suitable for early prototype validation.

Mechanical Design & Installation Notes

Proper installation helps maintain stable operation, reduce vibration, and extend service life during OEM integration.

Compact Motor Structure
The BDCM1219 uses a Φ12 × 19 mm cylindrical body, making it suitable for compact assemblies where axial and radial installation space is limited.

Bearing and Shaft Tolerance
Axial play is 0.05–0.15 mm, and radial play is ≤0.012 mm. Shaft load, press-fit force, and mounting alignment should be controlled to avoid bearing stress or reduced motor life.

Operating Conditions
The recommended ambient temperature range is -20°C to +65°C, with relative humidity below 90% RH at 25°C. Maximum rotor temperature should not exceed 120°C.

Optional Gearbox Integration
A planetary gearbox is available when lower output speed and higher torque transmission are required for compact OEM assemblies.

Downloads – Datasheet

[BDCM1219 Coreless Precious Metal Brushed DC Motor Specification PDF]

FAQ – BDCM1219 Coreless Brushed DC Motor

Q1: Why does the motor fail to start when the battery voltage becomes low?

A1: Precious metal brushed motors have good low-voltage starting behavior, but startup still depends on load torque, battery condition, and driver output. If the load is too high or the voltage drops under startup current, the motor may fail to start reliably.

Q2: Why does motor lifetime vary so much in different applications?

A2: Motor lifetime is strongly affected by load, duty cycle, current, temperature, and operating environment. For precious metal brushed motors, typical lifetime is around 1,000–3,000 hours, but actual results may vary depending on working conditions.

Q3: Why does noise increase after the motor runs for some time?

A3: Noise increase may be related to brush wear, bearing load, shaft misalignment, or vibration from the connected mechanism. In compact devices, even small installation stress or radial load can affect noise and service life.

Q4: What payment methods does BODENMOTION support?

A4: We support multiple payment methods, including PayPal, credit card, and T/T bank transfer, to support sample testing, small batch orders, and OEM mass production projects.

Q5: Is there a graphite brushed alternative with larger size and higher power?

A5: Yes, the BDCB1625 graphite brushed DC motor is available as a larger alternative. It has a Φ16 × 25 mm body size and a 1.5–4W power range, making it more suitable for applications requiring higher output power and longer brush life than precious metal brushed motors.

Contact BODENMOTION – OEM Coreless DC Motor Solutions

If you are developing portable medical devices, precision instruments, compact automation equipment, or embedded electromechanical systems, BODENMOTION can support motor selection, customization, prototype validation, and long-term OEM supply.

What We Can Provide

• Motor selection support based on speed, torque, voltage, load conditions, and installation requirements
• Application recommendations for coreless, brushed, and brushless motor solutions according to system performance targets
• OEM customization of shafts, lead wires, connectors, voltage, gearbox options, and mechanical interfaces
• Engineering support for prototype testing, motor matching, and system integration optimization
• Flexible sample delivery for rapid evaluation and early-stage product development
• Stable manufacturing capacity for long-term OEM and private-label production

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