4820 550W High-Speed Brushless Motor – 12-42V for Drill, Grinder & Pre Cutting
Compact high-speed motor for electric drills, angle grinders, and pre cutting machines.
KEY FEATURES
• 12-42V wide input – Compatible with 12V to 42V battery systems
• 550W peak power – Reliable power for drills and grinders
• 18,000 RPM no-load speed – Fast response for cutting and grinding
• 1,042mNm max torque – High torque for demanding applications
• Rated torque 400mNm – Consistent performance under load
• Lightweight 303g – Easy integration into handheld tools
• CW/CCW bidirectional – Flexible rotation for different tools
• Locked rotor protection – Built-in stall protection
• Stepless speed regulation – Smooth speed control
• Low noise & low EMI – Suitable for workshop use
• Long life design – 2000+ hours rated
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隐藏域元素占位
- Product Description
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Characteristic: CW & CCW, Signal function available, Locked rotor protection, Stepless speed regulation, Low noise, Low EMI, Long life.
TYPE Voltage range Un-load Speed Un-load Current Rated Voltage Rated Speed Rated Torque Rated Current Rated Power Maximum Torque Motor Weight (V) （RPM) (A) (V) (RPM) (mNm) (A) (W) (mNm) (G) 4820 12-42 10000 2 18 8400 400 19 350 1042 303 Notice: Data in this typical specification sheet are for other certain customer. Voltage, rated torque, speed, current, power and shaft extension feature & dimension can be changed to meet customer specific requirement.
OUTLINE DRAWING：
4820 550W High-Speed Brushless Motor
12-42V for Drill, Grinder & Pre CuttingCompact high-speed motor for electric drills, angle grinders, and pre cutting machines
Technical Specifications
Model4820Voltage Range12 – 42V DCNo-Load Speed18,000 RPMNo-Load Current2.0 ARated Voltage18VRated Speed8,400 RPMRated Torque400 mNmRated Current19 ARated Power350 WMax Power550 WMax Torque1,042 mNmMotor Weight303 gNote: Data in this typical specification sheet are for reference. Voltage, rated torque, speed, current, power and shaft extension features can be customized to meet customer specific requirements.Key Characteristics
CW & CCWBidirectional rotationSignal FunctionSpeed feedback availableLocked Rotor ProtectionStall protectionStepless Speed RegulationSmooth variable controlLow NoiseQuiet operationLow EMIMinimal interferenceLong Life2000+ hours ratedHigh Speed18,000 RPMWide Voltage: 12V to 42V
12V – 18VLight drilling · Light grinding
350W rated power18V – 30VStandard drill · Pre cutting
Balanced performance30V – 42VHeavy drilling · Heavy grinding
550W peak power · 18,000 RPMKey Features
- 12-42V wide input – Compatible with 12V to 42V battery systems
- 550W peak power – Reliable power for drills and grinders
- 18,000 RPM no-load speed – Fast response for cutting and grinding
- 1,042mNm max torque – High torque for demanding applications
- Rated torque 400mNm – Consistent performance under load
- Lightweight 303g – Easy integration into handheld tools
- CW/CCW bidirectional – Flexible rotation for different tools
- Locked rotor protection – Built-in protection against stall damage
- Stepless speed regulation – Smooth, continuous speed control
- Low noise & low EMI – Suitable for workshop and residential use
- Long life design – Rated for 2000+ hours of operation
Applications
Electric Drill Angle Grinder Pre Cutting Machine Power ToolsOEM Customization
- Voltage, torque, speed, and power customization
- Shaft length and diameter modification
- Connector type (JST, Molex, bare wire, custom)
- Mounting bracket and flange design
- IP rating (IP40 standard, IP54/IP65 available)
- Hall sensor integration for position feedback
- Planetary or spur gearbox integration
- Output shaft configuration for specific tools
Frequently Asked Questions
What is the maximum speed of this motor?The 4820 delivers 18,000 RPM no-load speed, making it suitable for high-speed applications like angle grinders and pre cutting machines.Can this motor be used for angle grinders?Yes. With 18,000 RPM and 550W peak power, the 4820 is well-suited for angle grinder applications.What is the difference between 4820 and 4825?The 4820 has higher no-load speed (18,000 vs 12,500 RPM) and is lighter (303g vs 391g), making it better for high-speed applications. The 4825 offers higher power (900W) for heavier cutting tasks.What voltage is recommended for pre cutting machines?For pre cutting machines, 30-42V provides 550W peak power and maximum torque (1,042mNm) for clean cuts.Does the motor include a controller?The motor is sold separately. We can recommend compatible BLDC controllers with stepless speed regulation for 12-42V configurations.What is the expected motor lifetime?The 4820 is designed for long life with 2000+ hours rated operation under normal working conditions.
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