AGFRC A73BHNH (17.5kg/0.061s/8.4v) Standard Size Helicotper HV Digital Brushless Servo

Featuring a CNC-machined aluminum case, full steel gears, brushless motor, and dual ball bearings, the A73BHNH provides exceptional precision, durability, and reliability. Its high refresh rate and rapid response make it ideal for demanding 3D flight where tail authority and lock-in performance are critical.

Although designed primarily as a helicopter tail servo, it can also be used in specialty applications requiring extremely fast and precise control.

Key Features

• Designed specifically for helicopter tail applications
• High 666Hz refresh rate
• HV compatible up to 8.4V
• High-performance brushless motor
• Up to 17.5 kg-cm torque
• Ultra-fast 0.061 sec / 60°
• Full steel gear train
• CNC aluminum case
• Programmable digital circuitry
• Dual ball bearings
• Flybarless system compatible

Ideal Applications

• RC Helicopter Tail Servo
• 500 Class Helicopters
• 550 Class Helicopters
• 600 Class Helicopters
• 700 Class Helicopters
• Flybarless Systems
• 3D Helicopter Flight
• Electric Helicopters
• Nitro Helicopters
• Specialty Robotics Applications

Why Choose the AGFRC A73BHNH?

• Optimized specifically for tail rotor control
• High 666Hz refresh rate for modern gyro systems
• Extremely fast response speed
• Outstanding tail hold performance
• Long-life brushless motor
• Durable steel gear train
• Fully programmable
• Compatible with advanced flybarless systems

Specifications

• Operating Voltage: 4.8V – 8.4V
• Refresh Rate: 760μs / 666Hz
• Torque @ 4.8V: 14.0 kg-cm
• Torque @ 6.0V: 15.0 kg-cm
• Torque @ 7.4V: 16.5 kg-cm
• Torque @ 8.4V: 17.5 kg-cm
• Speed @ 4.8V: 0.085 sec / 60°
• Speed @ 6.0V: 0.075 sec / 60°
• Speed @ 7.4V: 0.068 sec / 60°
• Speed @ 8.4V: 0.061 sec / 60°
• Motor Type: Brushless
• Gear Material: Steel
• Sensor Type: Potentiometer
• Bearings: 2 Ball Bearings
• Dimensions: 40 × 20 × 37.5 mm
• Weight: 73.5 g
• Output Spline: 25T

Package Includes

• 1 × AGFRC A73BHNH Servo
• 2 × 25T Plastic Servo Horns
• 4 × Mounting Screws
• 1 × Horn Screw
• 4 × Rubber Grommets
• 4 × Copper Sleeves