Product Overview
Engineered for heavyvibration, longcycle outdoor RC and robotic operations,EMAX RC Servos minimise gradual performance drift triggered by component wear, mechanical flex and complex wiring setups.

Featuring noncontact magnetic encoder feedback, widevoltage compatibility and robust allmetal build, they maintain stable angular output under continuous vibration and heavy loading.

With true 360°positional control, they fit seamlessly into existing assemblies without major rework, delivering dependable performance for highdemand aircraft, helicopter and robotic projects.

Feature

Noncontact magnetic encoder sustains stable angle output over long runtime, resisting performance variations caused by airborne vibration

Wide highvoltage support delivers improved torque and response, eliminating extra onboard conversion hardware for highvoltage LiPo power systems

Allmetal gears and housing withstand impact and sustained load, extending service life in harsh field operating conditions

Configurable 180° / 360° positional hold expands mechanical layout flexibility, reducing modification work on linkages and gears

Standard formfactor, JR connector and 23T spline support easy hardware upgrade without fullsystem rework

Application Scenarios
RC helicopter tail assemblies
Largesize fixedwing aircraft main control surfaces
Hightorque radiocontrolled model platforms
Robotic joint assemblies and motorized rotating turntable mechanisms
Custom automation hardware and specialpurpose RC equipment

Specifications

Specification	ES9055Ⅱ
Product Type	Magnetic Encoder / Brushed / Digital / Metal Servo
Operating Voltage	6.08.4V
Speed(6.0 / 7.4 / 8.4V)	0.17 / 0.14 / 0.12 sec/60°
Stall Torque(6.0 / 7.4 / 8.4V)	25 / 30 / 35 kgf·cm
Stall Current	Approx.4.05.5A (typical reference range)
Net Weight	78.5 ±1g
Dimensions	Approx. 40 × 20 × 38.5 mm
Rotation Angle	180°±2°, supports 360° fullrange positional control
Use For	Heavyduty highload aircraft, robot and special mechanism equipment

Package List
1 × Servo Unit
Servo Horns & Mounting Hardware Kit
User Instruction Manual

FAQ

Q: Will a magnetic encoder RC servo work with my existing standard PWM receiver?
A: Yes. These Emax RC Servos comply with standard 5002500μs PWM and JR connector specs. Basic operation requires no special controller. Only 360° position mode needs corresponding controller parameter configuration.

Q: What realworld improvement does a magnetic encoder bring over potentiometerbased RC servos during flight?
A: Potentiometerbased servos tend to develop positional offset under sustained vibration and long flight time. Magnetic encoder maintains stable centering over longterm use and cuts frequent inflight trimming.

Q: Can I power this highvoltage radio control servo using a 2S LiPo battery?
A: It works with lowervoltage input but cannot reach full rated performance. Make sure your BEC or power supply provides sufficient current for actual working loads.

Q: How will large outdoor temperature fluctuations affect servo performance?
A: It supports broad ambient temperature ranges for outdoor use. Avoid continuous operation under extreme temperatures to preserve service lifespan.

Q: Is regular calibration needed after hard crashes or heavy impacts?
A: Manual calibration is unnecessary after ordinary impacts. If jitter or position offset occurs following severe crashes, check linkages, servo horns and mounting parts for mechanical damage first.

DP-28.68

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