16mm Micro Brushed DC Motor 3–24 V 4.4 mN·m Coreless DC Motor | BDCM1630 BODENMOTION

Overview of BDCM1630 Micro Brushed DC Motor

The BDCM1630 micro brushed DC motor uses a Ø16 × 30 mm coreless structure to provide more torque capacity than shorter 16 mm platforms while retaining a compact radial footprint. Rated torque reaches 4.4 mN·m, and the 30 g motor body makes it suitable for OEM mechanisms where moderate load capability, simple two-wire control, and compact packaging need to work together.
Four winding versions cover 3V, 6V, 12V, and 24V systems. Rated speed ranges from 6,240 to 9,600 rpm, while typical motor noise is specified at 38 dB or lower. For projects requiring a different output speed or feedback capability, planetary gearbox and photoelectric or magnetoelectric encoder configurations are available as options.

Key Features of BDCM1630 Coreless DC Motor

• Rated Torque up to 4.4 mN·m – Provides useful load capability for compact actuators, adjustment mechanisms, and small transmission systems.
• Low-Noise Coreless Operation – Typical acoustic output is specified at 38 dB or lower, supporting equipment where motor noise must be controlled.
• 3–24V Winding Range – Four winding options allow the same Ø16 mm platform to fit low-voltage battery systems and higher-voltage DC architectures.
• Up to 80.7% Maximum Efficiency – The 12V version reaches the highest measured efficiency at its optimized operating point.
• Compact Ø16 × 30 mm Structure – The longer 30 mm body provides additional electromagnetic volume without increasing the motor diameter.
• Precious-Metal Brush Commutation – Provides straightforward brushed DC control without requiring a separate three-phase BLDC controller.
• Optional Gearbox and Encoder – Planetary gearing plus photoelectric or magnetoelectric feedback can be added when lower output speed, higher transmitted torque, or motion feedback is required.

Technical Specifications of BDCM1630 Micro Brushed DC Motor

The four suffixes identify different winding configurations. Their current demand, speed, torque constant, and resistance differ, so voltage selection should be made together with the target operating point and available power supply.

Motor Model	Unit	BDCM1630-01	BDCM1630-02	BDCM1630-03	BDCM1630-04
At Nominal
Nominal Voltage	V/DC	3	6	12	24
Nominal Speed	rpm	9,600	7,760	6,240	6,240
Nominal Current	A	1.9	0.8	0.3	0.1
Nominal Torque	mN·m	4.2	4.4	4.2	3.6
Free Load
No-load Speed	rpm	12,000	9,700	7,800	7,800
No-load Current	mA	95	50	15	10
At Max. Efficiency
Maximum Efficiency	%	80.5	78.5	80.7	76.6
Speed	rpm	10,920	8,730	7,098	6,942
Current	A	0.9	0.4	0.1	0.1
Torque	mN·m	1.9	2.2	1.9	2.0
At Max. Output Power
Maximum Output Power	W	6.6	5.6	4.3	3.7
Speed	rpm	6,000	4,850	3,900	3,900
Current	A	4.5	2.0	0.7	0.3
Torque	mN·m	10.5	11.1	10.4	9.1
At Stall
Stall Current	A	9.0	3.9	1.5	0.6
Stall Torque	mN·m	21.0	22.2	20.9	18.2
Motor Constants
Terminal Resistance	Ω	0.33	1.56	8.28	37.50
Terminal Inductance	mH	0.02	0.08	0.39	1.05
Torque Constant	mN·m/A	2.36	5.83	14.54	28.92
Speed Constant	rpm/V	4,000.0	1,616.7	650.0	325.0
Speed/Torque Constant	rpm/mN·m	570.5	437.8	373.9	428.1
Mechanical Time Constant	ms	8.1	6.2	4.7	5.4
Rotor Inertia	g·cm²	1.36	1.36	0.90	0.90
Number of Pole Pairs	—	1	1	1	1
Number of Phases	—	5	5	5	5
Weight	g	30	30	30	30
Typical Noise Level	dB	≤38	≤38	≤38	≤38

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

Motor Model Number Breakdown

Mechanical Design & Installation Notes for BDCM1630 Low Noise Coreless Motor

Maintaining low motor noise after installation depends on more than the motor itself. Shaft loading, coupling alignment, mounting stiffness, and the transmission can all add vibration or acoustic output to the finished assembly.

Shaft Load Control
The sintered metal bearing supports a maximum dynamic axial load of 0.5 N and a maximum radial load of 5 N, measured 5 mm from the flange. Overhung gears or pulleys should be evaluated carefully before placing their full load directly on the motor shaft.

Mechanical Clearance
Axial play is specified at 0.05–0.15 mm, while radial play is limited to 0.012 mm. Accurate coupling alignment helps reduce additional friction, vibration, and bearing stress.

Press-Fit Installation
Maximum static press-fit force is 15 N. Assembly force should be applied through the appropriate structural surface rather than transferred unnecessarily through the output shaft.

Noise-Sensitive Mounting
Rigid brackets can transmit motor vibration into the equipment housing, while thin panels may amplify it. The specified motor noise should therefore be checked again after installation into the final mechanism.

Thermal Environment
The motor is specified for ambient temperatures from −20°C to +80°C, relative humidity below 90% RH at 25°C, and rotor temperatures up to 125°C.

High-Current Operating Conditions
The 3V and 6V windings require substantially more current than the higher-voltage versions. Driver contacts, wiring, battery impedance, and connector resistance should be considered when these configurations are used under heavier loads.

OEM Customization Options for BDCM1630 Precious Metal Brush Motor

The BDCM1630 can be adapted according to the target voltage platform, transmission design, feedback requirement, and final equipment layout.

Customization Item	Available Options / Description
Winding Version	Standard 3V, 6V, 12V, or 24V configuration
Planetary Gearbox	Optional for reduced output speed and increased transmitted torque
Encoder Option	Optional photoelectric or magnetoelectric encoder
Operating Point	Winding selection based on speed, torque, current, and load requirements
Shaft Configuration	Shaft dimensions and geometry can be reviewed for the driven mechanism
Wiring / Lead Length	Connection arrangement can be adapted to the equipment layout
Connector Type	Connector requirements can be reviewed for the OEM harness
Mounting Interface	Mechanical adaptation can be evaluated for the final assembly
Prototype Combination	Motor, gearbox, and optional encoder can be tested together before production

The gearbox and encoder are optional configurations rather than standard components of the base motor.

Application Fields of BDCM1630 Coreless DC Motor

The BDCM1630 is relevant to compact equipment that requires more torque than smaller precious-metal brushed motors while still benefiting from simple DC control and relatively low acoustic output.

• Compact Industrial Actuators – Drives adjustment, locking, indexing, and linkage mechanisms with moderate torque requirements.
• Laboratory & Analytical Equipment – Powers internal motion functions where compact size and controlled acoustic output are useful.
• Optical Adjustment Modules – Supports focusing, alignment, aperture, and calibration mechanisms requiring smooth movement.
• Miniature Pump and Valve Systems – Provides rotational input for compact fluid-handling and flow-control assemblies.
• Portable Electromechanical Devices – Fits internal drive mechanisms where a small motor frame must deliver useful torque.
• Geared Motion Modules – Can be paired with the optional planetary gearbox and encoder when lower output speed or feedback is required.

Why Choose BODENMOTION for Your Micro Brushed DC Motor Project

The main selection tradeoff in this motor platform is not simply voltage versus speed. Higher-current low-voltage windings, brush duty cycle, system noise, transmission losses, and mechanical loading all influence how the BDCM1630 behaves in the final product.

• Low-Voltage Current Evaluation – We help assess supply resistance, connector losses, driver capacity, and startup current for 3V and 6V systems.
• Noise-Sensitive Integration Support – Motor acoustic data is considered together with mounting resonance, gears, couplings, and enclosure structure.
• Torque Margin Review – Rated load, startup friction, acceleration demand, and transmission losses are evaluated before selecting motor or gearbox size.
• Gearbox and Encoder Matching – Optional transmission and feedback can be added according to actual actuator requirements rather than included unnecessarily.
• Cost-Effective Alternative to Premium Brands – BODENMOTION provides a flexible coreless brushed motor platform for OEM projects seeking practical sourcing alternatives.
• Prototype Validation Support – Motor current, speed, temperature, noise, and operating consistency can be checked under the real load before volume production.

Customer Feedback

Germany | Precision Equipment Manufacturer
Application: compact optical adjustment mechanism
Feedback: The Ø16 mm motor diameter fit the existing mechanical envelope while providing enough torque to eliminate the need for a larger motor platform.

Japan | Laboratory Automation OEM
Application: sample-handling actuator
Feedback: The low motor noise helped reduce additional acoustic contribution inside the enclosed instrument during repeated movement cycles.

United States | Industrial Device Developer
Application: miniature geared drive
Feedback: The gearbox option allowed the team to reduce output speed while retaining the compact Ø16 mm motor structure used in the prototype.

Downloads – Datasheet

[BDCM1630 Micro Precious Metal Brushed Coreless DC Motor Specification PDF]

FAQ – BDCM1630 Micro Brushed DC Motor

Q1: Why does the 3V version require much more current than the 24V version?

A1: The models use different winding configurations. The 3V version has much lower terminal resistance and is rated at 1.9 A, while the 24V version is rated at 0.1 A. Power-supply and wiring requirements should therefore be selected for the specific winding rather than based on motor size alone.

Q2: Why can the finished device be louder than the motor’s 38 dB specification?

A2: Motor-level acoustic performance does not include vibration from brackets, housings, gears, bearings, or driven components. Coupling alignment and mounting resonance should be checked at the complete system level.

Q3: Is maximum-output torque suitable for continuous operation?

A3: Not automatically. Maximum-output points involve higher current and lower speed than nominal operation. Continuous suitability should be confirmed using the actual load cycle, temperature rise, and required service interval.

Q4: Does BODENMOTION provide international shipping?

A4: Yes. Samples can normally be shipped by FedEx or DHL, while bulk orders can be arranged by air or sea according to order quantity and destination.

Q5: Is there a shorter 16 mm precious-metal brushed alternative?

A5: Yes. The BDCM1625 uses a shorter Ø16 × 25 mm body and belongs to the 4–8W product class. It is more suitable when axial installation space is tighter, while the BDCM1630 provides a longer Ø16 × 30 mm platform and rated torque up to 4.4 mN·m.

Contact BODENMOTION – Micro Brushed DC Motor Solutions

For compact OEM systems requiring a precious-metal brushed coreless motor, BODENMOTION supports selection around the actual power supply, mechanical load, acoustic target, and transmission requirements.

What We Can Provide

• Voltage and Winding Matching – Compare 3V, 6V, 12V, and 24V versions according to current capacity, speed, and torque requirements.
• Low-Noise Integration Review – Evaluate motor mounting, coupling, transmission, and enclosure factors that influence final system noise.
• Torque and Load Assessment – Review startup friction, continuous load, peak torque, and transmission losses.
• Gearbox and Encoder Options – Match planetary gearing and optional feedback to the actual motion-control requirement.
• Prototype Performance Testing – Verify current, speed, temperature, noise, and load behavior under real operating conditions.
• OEM Production Support – Support samples, pilot builds, customized configurations, and stable long-term supply.

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