The FrSky Act S5415H Coreless HV Servo is a high-performance, high-torque digital servo designed for demanding RC aircraft applications where strength, precision and reliability are essential. Built with a powerful coreless motor, hardened metal gears and a fully CNC-machined aluminium case, the S5415H delivers exceptional control authority for giant-scale aircraft, aerobatic models, jets and heavy-duty control surface installations.

Operating from 4.8V to 8.4V, the S5415H develops an impressive 71kg.cm of torque at 8.4V while maintaining smooth and precise movement. The combination of dual precision ball bearings and an integrated potentiometer ensures excellent centring accuracy, consistent performance and long service life.

Engineered to withstand the demands of modern RC aviation, the S5415H offers the perfect balance of power, durability and speed, making it an ideal solution for pilots requiring dependable servo performance in high-load applications.

Key Features

• Powerful coreless motor technology
  
• Massive 71kg.cm torque output at 8.4V
  
• High-voltage operation from 4.8V to 8.4V
  
• Full CNC-machined aluminium protective case
  
• Heavy-duty metal gear train
  
• Dual precision ball bearings
  
• High-strength digital servo design
  
• Excellent centring accuracy
  
• Fast response with smooth operation
  
• Designed for demanding RC aircraft applications
  
• Durable construction for long service life
  
• Ideal for large control surfaces and high-load installations

Perfect For

• Giant Scale Aircraft
  
• IMAC Competition Models
  
• 3D Aerobatic Aircraft
  
• Large Scale Warbirds
  
• Turbine Jets
  
• Large EDF Jets
  
• Scale Aircraft
  
• RC Helicopters
  
• Heavy-Duty Rudder Applications
  
• Elevator Systems
  
• Large Aileron Installations
  
• Competition Aircraft
  

Product Summary

The FrSky Act S5415H is a powerful coreless high-voltage servo delivering up to 71kg.cm of torque at 8.4V. Featuring a CNC-machined aluminium case, metal gears, dual ball bearings and precision potentiometer feedback, it provides outstanding reliability and control for giant-scale and high-performance RC aircraft.

Specifications

• Model: S5415H
  
• Series: FrSky Act 5400 Coreless
  
• Servo Type: High Voltage Digital Servo
  
• Motor Type: Coreless
  
• Gear Type: Metal Gear
  
• Feedback System: Potentiometer
  
• Bearing Type: Dual Precision Ball Bearings
  
• Operating Voltage Range: 4.8V – 8.4V
  
• Servo Horn Spline: Φ6 25T
  
• Refresh Rate: 1520μs / 333Hz

Dimensions & Weight

• Dimensions: 40 × 20 × 39mm
  
• Weight: 80g
  
• Electrical Specifications
  
  • Stall Current: 4.7A @ 6.0V
    
  • Stall Current: 5.8A @ 7.4V
    
  • Stall Current: 6.6A @ 8.4V

Performance

• At 6.0V
  
  • Torque: 53kg.cm (736oz-in)
    
  • Speed: 0.15 sec/60°
    
• At 7.4V
  
  • Torque: 63kg.cm (874.9oz-in)
    
  • Speed: 0.12 sec/60°
    
• At 8.4V
  
  • Torque: 71kg.cm (986oz-in)
    
  • Speed: 0.10 sec/60°

Why Buy From Probuild Aircraft?

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In The Box

• FrSky Act S5415H Coreless HV Servo
  
• Servo Arm Set
  
• Mounting Hardware