24V Coreless Motor Ø15×25 mm 54,300 RPM Small BLDC Motor | BDCL1525 BODENMOTION

Overview of BDCL1525 24V Coreless Motor

The BDCL1525 24V coreless motor concentrates high rotational speed and substantial output capability into a compact Ø15 × 25 mm frame. The 24V winding delivers a rated speed of 54,300 rpm with 3.47 mN·m rated torque, while the complete series covers a 25–65W power class and weighs only 27 g.

Four windings are available for 9V, 12V, 18V, and 24V systems. The 12V version reaches the highest rated speed at 60,450 rpm, while the 18V version provides the highest rated torque at 3.71 mN·m. This range allows OEM engineers to select the winding around the available supply, current limit, target speed, and actual aerodynamic or mechanical load.

Key Features of BDCL1525 High-Speed Brushless DC Motor

• High Power from a Compact Frame – The Ø15 × 25 mm platform belongs to the 25–65W power class, providing strong power density where installation space and system weight are limited.
• Ultra-High Rotational Speed – Rated speed reaches 60,450 rpm, supporting compact equipment that depends on rapid airflow, fluid movement, or high-speed rotation.
• Low Rotor Inertia – Rotor inertia of only 0.20 g·cm² supports fast acceleration and responsive speed changes under a compatible controller.
• Up to 78.3% Maximum Efficiency – The 12V winding reaches the highest measured efficiency near its optimized operating point.
• Sensorless Brushless Commutation – Three-phase sensorless operation eliminates mechanical brush replacement and simplifies the motor wiring interface.
• Flexible Bearing Selection – Ball-bearing and sleeve-bearing options allow the mechanical design to be reviewed around speed, radial load, noise, and cost targets.
• Planetary Gearbox Compatibility – An optional gearbox expands the motor platform into applications requiring lower output speed and greater transmitted torque.

Technical Specifications of BDCL1525 Small BLDC Motor

Each suffix represents a separate winding configuration. The supply voltage, driver current capability, target operating speed, startup load, and thermal conditions should be evaluated together rather than treating the four versions as interchangeable voltage settings.

Motor Model	Unit	BDCL1525-01	BDCL1525-02	BDCL1525-03	BDCL1525-04
At Nominal
Nominal Voltage	V/DC	9	12	18	24
Nominal Speed	rpm	48,870	60,450	57,468	54,300
Nominal Current	A	2.71	1.86	1.68	1.15
Nominal Torque	mN·m	3.49	2.72	3.71	3.47
Free Load
No-load Speed	rpm	54,000	65,000	63,500	60,000
No-load Current	mA	480	300	280	220
At Max. Efficiency
Maximum Efficiency	%	73.7	78.3	74.5	72.5
Speed	rpm	47,250	58,175	55,880	52,200
Current	A	3.420	2.642	2.046	1.491
Torque	mN·m	4.60	4.07	4.69	4.75
At Max. Output Power
Maximum Output Power	W	51.9	66.0	65.0	57.4
Speed	rpm	27,000	32,500	31,750	30,000
Current	A	12.2	11.5	7.6	5.1
Torque	mN·m	18.30	19.40	19.55	18.27
At Stall
Stall Current	A	24.00	22.60	15.00	10.00
Stall Torque	mN·m	36.70	38.79	39.10	36.54
Motor Constants
Terminal Resistance	Ω	0.38	0.53	1.20	2.40
Terminal Inductance	mH	0.011	0.017	0.038	0.074
Torque Constant	mN·m/A	1.56	1.74	2.66	3.74
Speed Constant	rpm/V	6,000	5,417	3,528	2,500
Speed/Torque Constant	rpm/mN·m	1,472.0	1,675.6	1,624.0	1,642.3
Mechanical Time Constant	ms	3.15	3.59	3.48	3.52
Rotor Inertia	g·cm²	0.20	0.20	0.20	0.20
Number of Pole Pairs	—	1	1	1	1
Number of Phases	—	3	3	3	3
Weight	g	27	27	27	27
Typical Noise Level	dB	≤55	≤55	≤55	≤55

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

Motor Model Number Breakdown

 

Mechanical Design & Installation Notes for BDCL1525 Brushless Motor for Drones

The BDCL1525 operates at speeds where the balance of the entire rotating assembly becomes critical. Propellers, impellers, couplings, and other driven parts should be evaluated together with the motor rather than validating the unloaded motor alone.

Rotating Load Balance
Small mass or concentricity errors can generate substantial vibration above 50,000 rpm. The driven component should be dynamically balanced, correctly centered, and mounted without excessive shaft runout.

Bearing Load Limits
The bearing system supports a maximum dynamic axial load of 0.8 N and a maximum radial load of 8 N, measured 5 mm from the flange. The maximum static press-fit force is 10 N.

Bearing Option Selection
Ball-bearing and sleeve-bearing versions are available. Ball bearings can be evaluated where radial stability and repeated high-speed operation are priorities, while the final choice should also consider acoustic limits, cost, and load direction.

Mechanical Clearance
Axial play is specified at 0.05–0.15 mm, and radial play is limited to 0.015 mm. Couplings and rotating components should not preload the shaft beyond the permitted range.

Driver Current Capacity
Rated current ranges from 1.15 to 2.71 A, but startup and stalled conditions can require substantially more current. The ESC or BLDC driver should include suitable transient-current capacity, current limiting, and protection settings.

Thermal Management
The permitted ambient temperature range is −20°C to +80°C, while rotor temperature should remain below 85°C. Drone enclosures and compact airflow modules should be tested under actual altitude, airflow, load, and duty-cycle conditions.

OEM Customization Options for BDCL1525 Slotless motor

Customization should concentrate on the electrical interface and mechanical details that directly influence high-speed integration. Final feasibility depends on the required performance and production quantity.

Customization Item	Available Options / Description
Winding Version	Standard 9V, 12V, 18V, or 24V configuration
Bearing Type	Ball-bearing or sleeve-bearing option
Cable Length	Lead length can be adapted to the controller and equipment layout
Connector Type	Connector selection can be reviewed for the OEM wiring harness
Phase Sequence	Three-phase wire sequence can be customized
Terminal Configuration	Final output arrangement subject to the approved product design
Shaft Interface	Shaft requirements can be reviewed according to the driven component
Gearbox Option	Optional planetary gearbox for speed reduction and torque multiplication
Prototype Configuration	Sample winding and interface selected for real-load validation

The standard specification identifies a sensorless three-phase interface using Motor Phase A, B, and C. It also confirms that cables, connectors, and wire sequence can be customized.

Application Fields for BDCL1525 Small BLDC Motor

The BDCL1525 is relevant where high rotational speed, compact dimensions, low rotor inertia, and strong power density must be combined in a lightweight drive platform.

• Drone Air-Moving Modules – Drives compact impellers and cooling assemblies where low motor weight and high rotational speed are important.
• Small UAV Propulsion Systems – Can be evaluated with a matched propeller, ESC, battery, and thermal design for compact unmanned aircraft platforms.
• Miniature Blowers – Provides high-speed rotation for compact air-delivery and cooling modules.
• Micro Pumps and Compressors – Supports centrifugal and rotary fluid-handling mechanisms requiring elevated motor speed.
• Portable Analytical Equipment – Powers high-speed sampling, separation, or internal rotary mechanisms.
• Compact High-Speed Spindles – Offers a low-inertia drive source for miniature rotary tools and precision equipment.

Each application should be validated with the actual rotating load, aerodynamic resistance, controller, power source, mounting structure, and continuous operating time.

Why Choose BODENMOTION for Your High-Speed Small BLDC Motor Project

A miniature high-speed motor cannot be selected from peak rpm or power alone. The winding, ESC, startup current, rotating balance, bearing configuration, and thermal path determine whether the final system can operate consistently.

• Voltage and Winding Comparison – We help compare the 9V, 12V, 18V, and 24V versions according to battery voltage, current limits, and target speed.
• ESC and Startup Matching – Driver commutation, transient-current capacity, startup load, acceleration profile, and protection settings are evaluated together.
• High-Speed Balance Review – Shaft runout, bearing choice, impeller or propeller balance, and mounting rigidity are considered before prototype approval.
• Thermal Operating-Point Evaluation – Rated, maximum-efficiency, and maximum-output data are reviewed separately to avoid selecting an unsustainable operating condition.
• Cost-Effective Alternative to Premium Brands – BODENMOTION provides a practical high-speed coreless motor platform with OEM interface flexibility and competitive sourcing costs.
• Prototype Validation Before Production – Samples can be tested under the actual controller, airflow, rotating load, enclosure, and duty cycle before volume production.

Customer Feedback

Germany | Drone Systems Developer
Application: compact UAV cooling module
Feedback: The Ø15 × 25 mm motor frame reduced module size while providing the rotational speed required by the miniature impeller.

Japan | Portable Equipment Manufacturer
Application: high-speed internal blower
Feedback: The 24V winding matched the existing power architecture and reduced nominal current compared with the lower-voltage versions.

United States | Analytical Instrument OEM
Application: miniature rotary sampling module
Feedback: The low rotor inertia improved acceleration response and helped the mechanism reach its target speed within a shorter operating cycle.

Downloads – Datasheet

[BDCL1525 24V Coreless Brushless DC Motor Specification PDF]

FAQ – BDCL1525 High-Speed Brushless DC Motor

Q1: Why does the motor fail to reach the listed 60,450 rpm in the final system?

A1: The 60,450 rpm value applies to the 12V winding at its nominal operating point. Aerodynamic resistance, mechanical loading, voltage drop, ESC limits, supply impedance, and insufficient current capacity can all reduce the actual speed.

Q2: Can the 66W maximum-output value be used continuously?

A2: Not without validation. At that operating point, the 12V motor runs at 32,500 rpm and draws 11.5 A. Continuous suitability depends on winding temperature, cooling, mounting, load characteristics, and the required service life.

Q3: Is the BDCL1525 suitable for direct drone propulsion?

A3: It can be evaluated for compact UAV propulsion, but suitability depends on the propeller size, thrust target, ESC, battery voltage, airflow, motor temperature, and flight duty cycle. Motor rpm alone is not enough to confirm propulsion performance.

Q4: What warranty does BODENMOTION provide?

A4: BODENMOTION provides a 1-year warranty for product-quality issues under normal use. Damage caused by improper installation, misuse, operation outside specified limits, or non-product-quality factors is excluded.

Q5: Is there a narrower lower-power alternative?

A5: Yes. The BDCL1336 uses a slimmer Ø13 × 36 mm body and belongs to the 6–14W power class, with rated speeds around 40,250–40,920 rpm. It is more suitable when radial installation space is tighter and the BDCL1525’s 25–65W power range is unnecessary.

Contact BODENMOTION – High-Speed Coreless Motors for Drone Systems

For drone, blower, pump, and compact rotary projects requiring high speed from a small motor platform, BODENMOTION supports selection based on the complete electrical, aerodynamic, mechanical, and thermal requirements.

What We Can Provide

• Winding and Battery Matching – Compare voltage, operating current, target rpm, and available battery or power-supply capacity.
• ESC Compatibility Review – Evaluate phase control, startup behavior, current limits, protection settings, and acceleration requirements.
• Rotating Assembly Assessment – Review shaft loading, bearing choice, propeller or impeller balance, and mounting concentricity.
• High-Speed Thermal Validation – Test speed, current, temperature, airflow, and operating duration under the actual system load.
• Cable and Connector Customization – Adapt cable length, connector type, phase sequence, and output-terminal arrangement.
• OEM Prototype and Production Support – Support sample evaluation, pilot builds, approved configurations, and stable long-term manufacturing.

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