EMAX ES9054II High Voltage Magnetic Encoder Servo

The EMAX ES9054II is a high-voltage all-metal digital servo engineered for helicopter tail rotor applications. Built around a contactless magnetic encoder for drift-free centering under vibration, the ES9054II delivers up to 25 kgf·cm of stall torque at 8.4V with a blazing 0.09 sec/60° response speed. Configurable for 180° or full 360° positional control, with a standard JR connector and 23T spline for drop-in compatibility with existing installations.

Key Features

Non-contact magnetic encoder — stable centering during vibration and long operating cycles
All-metal case and gear train for durability in demanding heli tail applications
High voltage operation: 6.0–8.4V (2S LiPo direct compatible)
Configurable 180° ±2° or full 360° positional control
Standard JR connector and 23T spline — direct upgrade in existing installations
PWM range: 500–2500μs

Specifications

Product Type: Magnetic Encoder / Brushed / Digital / All-Metal Servo
Application: Digital Servo for Heli Tail
Operating Voltage: 6.0–8.4V
Speed: 0.12 / 0.10 / 0.09 sec/60° (@ 6.0 / 7.4 / 8.4V)
Stall Torque: 18 / 22 / 25 kgf·cm (@ 6.0 / 7.4 / 8.4V)
Stall Current: ~4.0–5.5A
Weight: 72 ±1g
Dimensions: ~40 × 20 × 38.5mm
Rotation Angle: 180° ±2°; supports 360° full-range positional control
Connector: JR
Output Spline: 23T
PWM Range: 500–2500μs