Coreless Graphite Brushed DC Motor Long-Life OEM Drive Solution BDCB1626 BODENMOTION

Overview of BDCB1626 Coreless Graphite Brushed DC Motor

The BDCB1626 coreless graphite brushed DC motor is designed for OEM applications requiring longer brush life, stable torque output, and reliable continuous operation. With a Φ16 × 26 mm body and a weight of only 24 g, it provides an excellent balance between compact size and mechanical durability for embedded motion systems.

Supporting 6V, 9V, 12V, and 24V configurations, the BDCB1626 delivers rated speeds from 8108 to 9928 rpm and rated torque from 2.71 to 3.64 mN·m. Compared with precious metal brushed motors, its graphite brush system offers longer service life and better suitability for continuous-duty and moderate-load applications, making it a practical choice for industrial OEM equipment.

Key Features of BDCB1626 Long-Life DC Motor

• Coreless Rotor Design – Low rotor inertia enables responsive acceleration and smooth speed regulation.
• Graphite Brush System – Designed for longer service life and improved durability under continuous-duty operation.
• Wide Voltage Options (6–24V) – Compatible with multiple OEM power platforms and controller architectures.
• Stable Torque Output – Provides reliable performance under moderate-load operating conditions.
• Compact Φ16 × 26 mm Structure – Suitable for equipment requiring a balance between installation space and output capability.
• Low Noise Operation (≤45 dB) – Supports quieter operation in compact electromechanical assemblies.
• Optional Planetary Gearbox – Available for applications requiring increased output torque and lower operating speed.

Technical Specifications of BDCB1626 Graphite Brushed Motor

All performance values are measured under standard laboratory conditions. Actual performance may vary depending on load, driver settings, ambient temperature, and installation conditions.

Motor Model	Unit	BDCB1626-01	BDCB1626-02	BDCB1626-03	BDCB1626-04
At Nominal
Nominal voltage	V/DC	6	9	12	24
Nominal speed	rpm	8108	9125	9928	8614
Nominal current	A	0.65	0.53	0.44	0.23
Nominal torque	mNm	2.71	3.10	3.19	3.64
Free Load
No-load speed	rpm	11500	12500	13600	11800
No-load current	mA	80	65	50	32
At Max. Efficiency
Max. efficiency	%	64.0	65.6	66.8	66.2
Speed	rpm	9603	10500	11492	9971
Current	A	0.40	0.34	0.27	0.17
Torque	mNm	1.52	1.84	1.83	2.58
At Max. Output power
Max.output power	W	2.8	3.8	4.2	4.3
Speed	rpm	5750	6250	6800	5900
Current	A	1.04	0.93	0.78	0.41
Torque	mNm	4.59	5.75	5.91	6.20
At Stall
Stall current	A	2.00	1.80	1.50	0.82
Stall torque	mNm	9.2	11.5	11.8	13.5
Motor Constants
Terminal resistance	Ω	3.00	5.00	8.00	29.30
Terminal inductance	mH	0.10	0.18	0.34	1.10
Torque constant	mNm/A	4.78	6.63	8.14	18.75
Speed constant	rpm/V	1916.7	1388.9	1133.3	491.7
Speed/torque constant	rpm/mNm	1252.3	1087.1	1151.5	708.8
Mechanical time constant	ms	12.6	10.7	10.8	7.6
Rotor inertia	gcm²	0.96	0.94	0.90	1.03
Number of pole pairs	—	1	1	1	1
Number of phase	—	5	5	5	5
Weight of motor	g	24	24	24	24
Typical noise level	dB	≤45	≤45	≤45	≤45

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

Motor Model Number Breakdown

Mechanical Design & Installation Notes

Proper installation helps maintain stable operation, minimize brush wear, and maximize service life during OEM integration.

Mechanical Structure
The BDCB1626 features a Φ16 × 26 mm cylindrical housing, providing a compact form factor while offering higher output capability than smaller coreless motors.

Bearing & Shaft Support
The motor uses sintered metal bearings with an axial play of 0–0.1 mm and radial play of ≤0.015 mm. Excessive shaft load or improper press fitting should be avoided to maintain bearing life.

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 125°C.

Optional Gearbox Integration
A planetary gearbox is available for applications requiring lower speed, higher output torque, or increased positioning capability.

OEM Customization Options – BDCB1626 Industrial DC Motor

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

Customization Item	Available Options / Description
Voltage	Configurable according to system requirements
Speed Curve	Optimized for specific load characteristics
Shaft Type	Straight shaft, D-cut shaft, or custom-machined shaft
Shaft Length	Customized according to installation requirements
Gearbox Option	Planetary gearbox available
Wiring / Cable Length	Custom lead wire length and routing
Connector Type	Bare wire, JST, Molex, or customized connectors
Mounting Interface	Mechanical adaptation for OEM assemblies
Brush Configuration	Optimized graphite brush system for different duty cycles
Output Terminal	Customized electrical connection solutions

Application Fields of BDCB1626 Long-Life Drive Motor

From an OEM perspective, the BDCB1626 is suitable for equipment requiring longer service life, stable torque output, and continuous-duty performance.

• Industrial Automation – Compact drive solutions for embedded automation systems.
• Medical Equipment – Stable motion control in portable and benchtop medical devices.
• Laboratory & Analytical Instruments – Reliable drive performance for precision equipment.
• Fluid & Air Handling Systems – Suitable for compact pumps and airflow control modules.
• Smart Electromechanical Equipment – Motion drive for integrated electronic and mechanical products.

Why Choose BODENMOTION for Your OEM Motor Project

Selecting the right motor supplier involves more than comparing specifications. BODENMOTION helps OEM customers reduce selection, integration, validation, and production risks throughout the project.

• Selecting the Right Brush Technology – We help evaluate whether graphite brushed, precious metal brushed, or brushless motors are better suited to the required duty cycle, load, and service life.
• Continuous-Duty Performance Evaluation – Operating conditions and performance margins are reviewed to reduce premature brush wear and improve long-term reliability.
• Mechanical Integration Support – Shaft dimensions, gearbox options, connectors, and mounting interfaces can be adapted to simplify installation.
• Cost-Effective Alternative to Premium Brands – We provide practical replacement options for established international motor platforms while helping reduce procurement and project costs.
• Prototype Validation Assistance – Sample testing and application feedback help identify integration issues before volume production.
• Stable Supply for OEM Programs – Consistent manufacturing supports a smoother transition from prototype approval to long-term production.

Customer Feedback

Germany | Industrial Equipment Manufacturer

Application: compact automation drive

Feedback: The longer brush life significantly reduced maintenance frequency in continuous-duty operation.

Japan | Laboratory Equipment OEM

Application: analytical instrument

Feedback: Stable speed characteristics improved consistency during long-duration testing.

United States | Fluid Control System Manufacturer

Application: miniature pump module

Feedback: Reliable torque output and durable brush performance helped improve overall system reliability.

Downloads – Datasheet

[BDCB1626 Coreless Graphite Brushed DC Motor Specification PDF]

FAQ – BDCB1626 OEM Motor

Q1: Why does the motor gradually become noisier after extended operation?

A1: Noise increase is usually related to normal brush wear, bearing condition, or changes in mechanical loading. Proper shaft alignment and operating within the recommended load range help maximize service life and maintain stable acoustic performance.

Q2: Why is the actual motor speed lower than the rated speed?

A2: Rated speed is measured under specified operating conditions. Actual speed depends on supply voltage, controller performance, load torque, transmission efficiency, and environmental factors.

Q3: When should I choose a graphite brushed motor instead of a precious metal brushed motor?

A3: Graphite brushed motors are generally the better choice for applications requiring longer service life, higher load capability, and continuous operation. Precious metal brushed motors are better suited to low-voltage startup and very low-noise applications.

Q4: Does this motor have a minimum order quantity (MOQ)?

A4: No. We support flexible order quantities, including prototype samples, small-batch validation, and large-scale OEM production to meet different project stages.

Q5: Is there a precious metal brushed alternative for applications requiring lower starting voltage?

A5: Yes. The BDCM1219 coreless precious metal brushed DC motor is recommended for applications prioritizing low starting voltage, lower electrical noise, and lightweight design, while the BDCB1626 is better suited for longer service life and continuous-duty operation.

Contact BODENMOTION – OEM Coreless Graphite Brushed Motor Solutions

If you are developing industrial equipment, laboratory instruments, compact pump systems, or other applications requiring long service life and reliable continuous-duty performance, BODENMOTION provides engineering support from motor selection through OEM customization and volume production.

What We Can Provide

• Application-Oriented Motor Selection – Recommend the most suitable motor platform based on service life, torque, speed, duty cycle, and load requirements.
• Brushed Motor Customization – Customize voltage, shaft, lead wires, connectors, gearbox options, and mechanical interfaces to simplify system integration.
• Engineering Evaluation Support – Assist with prototype testing, load matching, and performance optimization to reduce development risk.
• Cost-Effective Replacement Solutions – Provide economical alternatives to well-known motor brands while maintaining stable quality and performance.
• Flexible Sample & Production Supply – Fast sample support for design validation and stable manufacturing capacity for long-term OEM projects.
• Technical Partnership – Work with your engineering team throughout development to improve integration efficiency and shorten product launch cycles.

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