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Kunray Launches 72V 3000W Brushless Motor Kit for Ebikes

2025-12-10

Electric vehicle enthusiasts seeking powerful acceleration and reliable performance now have a compelling option: the 3000W 72V brushless DC motor kit. This advanced system promises to transform electric scooters, go-karts, and motorcycles with its combination of high performance and low maintenance.

Core Technology Delivers Exceptional Performance

At the heart of this system lies a 3000W 72V brushless DC motor that offers several advantages over traditional brushed motors:

  • Powerful Acceleration: With 4 horsepower equivalent output, the motor delivers impressive torque for rapid acceleration and hill-climbing capability.
  • Energy Efficiency: Advanced electromagnetic design minimizes power loss, extending battery life and range.
  • Quiet Operation: The brushless design significantly reduces mechanical noise compared to conventional motors.
  • Durability: The sealed construction eliminates carbon brush wear, requiring minimal maintenance over its lifespan.
Technical Specifications
  • Rated Voltage: 72V
  • Power Output: 3000W (4hp)
  • Rated Current: 50A
  • Rated Speed: 4900 rpm
  • Maximum Speed: 6700 rpm
  • Torque: 5.4 N·m
  • Maximum Load: 100-150kg (220-330 lbs)
Intelligent Control System

The motor kit includes a sophisticated 50A controller with multiple advanced features:

  • Wide voltage compatibility (48-72V)
  • 120° phase angle for optimal motor-controller synchronization
  • Multiple control functions including low-voltage braking, three-speed adjustment, reverse operation, and battery charging monitoring
Three-Speed Throttle Control

Users can select from three power modes:

  • Low Speed: 50% power output for congested areas or beginner use
  • Medium Speed: 75% output for balanced performance and range
  • High Speed: Full 100% power for maximum acceleration
Comprehensive Accessories Package

The kit includes all necessary components for installation:

  • Ignition lock for security
  • T8F 11-tooth sprocket and matching chain
  • 150cm wiring harness
  • Detailed installation manual
Design and Construction Features

The motor incorporates several engineering enhancements:

  • All-aluminum housing with cooling vents
  • High-quality copper windings
  • 6-pole rotor design
  • Bidirectional rotation capability
  • Optimized thermal management
Application Versatility

This motor system suits various electric vehicle applications:

  • Electric scooters
  • Go-karts
  • Mini motorcycles
  • Off-road bikes
  • DIY electric vehicle projects
Operational Considerations

Users should note several important operational aspects:

  • Motor temperatures up to 100°C are considered normal during operation
  • Actual speed under load will vary based on vehicle weight and terrain
  • Reverse function operates at 50% power output
  • For optimal performance, 72V battery systems are recommended
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Blog Details
Home > Blog >

Company blog about-Kunray Launches 72V 3000W Brushless Motor Kit for Ebikes

Kunray Launches 72V 3000W Brushless Motor Kit for Ebikes

2025-12-10

Electric vehicle enthusiasts seeking powerful acceleration and reliable performance now have a compelling option: the 3000W 72V brushless DC motor kit. This advanced system promises to transform electric scooters, go-karts, and motorcycles with its combination of high performance and low maintenance.

Core Technology Delivers Exceptional Performance

At the heart of this system lies a 3000W 72V brushless DC motor that offers several advantages over traditional brushed motors:

  • Powerful Acceleration: With 4 horsepower equivalent output, the motor delivers impressive torque for rapid acceleration and hill-climbing capability.
  • Energy Efficiency: Advanced electromagnetic design minimizes power loss, extending battery life and range.
  • Quiet Operation: The brushless design significantly reduces mechanical noise compared to conventional motors.
  • Durability: The sealed construction eliminates carbon brush wear, requiring minimal maintenance over its lifespan.
Technical Specifications
  • Rated Voltage: 72V
  • Power Output: 3000W (4hp)
  • Rated Current: 50A
  • Rated Speed: 4900 rpm
  • Maximum Speed: 6700 rpm
  • Torque: 5.4 N·m
  • Maximum Load: 100-150kg (220-330 lbs)
Intelligent Control System

The motor kit includes a sophisticated 50A controller with multiple advanced features:

  • Wide voltage compatibility (48-72V)
  • 120° phase angle for optimal motor-controller synchronization
  • Multiple control functions including low-voltage braking, three-speed adjustment, reverse operation, and battery charging monitoring
Three-Speed Throttle Control

Users can select from three power modes:

  • Low Speed: 50% power output for congested areas or beginner use
  • Medium Speed: 75% output for balanced performance and range
  • High Speed: Full 100% power for maximum acceleration
Comprehensive Accessories Package

The kit includes all necessary components for installation:

  • Ignition lock for security
  • T8F 11-tooth sprocket and matching chain
  • 150cm wiring harness
  • Detailed installation manual
Design and Construction Features

The motor incorporates several engineering enhancements:

  • All-aluminum housing with cooling vents
  • High-quality copper windings
  • 6-pole rotor design
  • Bidirectional rotation capability
  • Optimized thermal management
Application Versatility

This motor system suits various electric vehicle applications:

  • Electric scooters
  • Go-karts
  • Mini motorcycles
  • Off-road bikes
  • DIY electric vehicle projects
Operational Considerations

Users should note several important operational aspects:

  • Motor temperatures up to 100°C are considered normal during operation
  • Actual speed under load will vary based on vehicle weight and terrain
  • Reverse function operates at 50% power output
  • For optimal performance, 72V battery systems are recommended