Emax USA

EMAX ES9054II High Voltage Magnetic Encoder Servo

$39.80 USD Sold out
Notes
EMAX ES9054II high voltage magnetic encoder digital servo
EMAX / PRECISION SERVO

Control that returns to center.

The EMAX ES9054II combines contactless magnetic-encoder feedback, an all-metal case and gear train, and 6.0–8.4V operation for fast, repeatable control in RC helicopters, fixed-wing aircraft and robotic mechanisms.

Maximum torque25 kgf·cmAt 8.4V
Maximum speed0.09 secPer 60° at 8.4V
FeedbackMagneticContactless encoder
HV range6.0–8.4V2S-capable system range
01 / Performance by voltage

Know exactly what the servo delivers.

Torque and transit speed are paired at each rated voltage so you can match the ES9054II to your power system without guessing.

Power-system check: Size the receiver, BEC, wiring and battery path for the servo's approximately 4.0–5.5A stall-current reference range.
6.0VStandard HV entry
Stall torque18 kgf·cm
Transit speed0.12 sec/60°
7.4V2S nominal
Stall torque22 kgf·cm
Transit speed0.10 sec/60°
8.4VFull rated output
Stall torque25 kgf·cm
Transit speed0.09 sec/60°
02 / Magnetic encoder feedback

Precision without a contact-wear feedback track.

Instead of relying on a conventional contact potentiometer for position sensing, the ES9054II uses a non-contact magnetic encoder. It is designed to maintain consistent centering through vibration and long operating cycles while reducing wear-related position changes.

Conceptual illustration of EMAX ES9054II magnetic encoder positioning and repeatable return to center
01

Repeatable centering

Precise position feedback supports consistent return-to-center behavior for demanding control loops.

02

Vibration-ready sensing

Contactless feedback is well suited to helicopter and aircraft environments with persistent vibration.

03

Long-cycle confidence

No sliding feedback contact means one less wear surface in repeated-motion applications.

03 / Application fit

One standard-size servo. Multiple precision-control roles.

RC helicopter tailFast correction speed and stable centering for tail-control applications.
Fixed-wing aircraftStrong holding torque for larger primary control surfaces.
Robotic joints180° or full-range 360° positional control for articulated mechanisms.
Custom automationStandard PWM input and all-metal construction for repeated motion.
04 / Specifications and fitment

Check the electrical and mechanical interface before ordering.

Servo type Magnetic encoder / brushed / digital / all-metal
Operating voltage 6.0–8.4V
Speed at 6.0 / 7.4 / 8.4V 0.12 / 0.10 / 0.09 sec/60°
Stall torque at 6.0 / 7.4 / 8.4V 18 / 22 / 25 kgf·cm
Stall current Approx. 4.0–5.5A typical reference range
Rotation 180° ±2°; supports 360° full-range positional control
PWM range 500–2500μs
Connector JR
Output spline 23T
Dimensions Approx. 40 × 20 × 38.5 mm
Net weight 72 ±1g
  • Confirm 23T horn compatibility
  • Confirm the servo bay accepts a 40 × 20 mm standard footprint
  • Confirm receiver/BEC voltage does not exceed 8.4V
  • Confirm the power path can support servo peak current
  • Center electronically before installing the horn
  • Set travel endpoints to avoid mechanical binding
Important: “360° positional control” is not the same as uncontrolled continuous rotation. The controller must support the required pulse range and position mode.
05 / Compatibility FAQ

Answers before installation.

Will it work with a standard PWM receiver?

Yes. The ES9054II uses a JR connector and standard 500–2500μs PWM control. Confirm the receiver or controller supports the travel range required by your setup.

Can I run it from a 2S LiPo system?

The 6.0–8.4V rating covers the nominal and fully charged voltage of a 2S LiPo system. The receiver, BEC, wiring and every connected device must also be rated for the selected voltage and current demand.

What is the practical benefit of the magnetic encoder?

The contactless position sensor avoids the sliding feedback contact used in a conventional potentiometer. That supports consistent centering under vibration and repeated motion while reducing one source of wear-related drift.

Is the ES9054II brushless?

No. The verified product specification identifies a brushed motor with digital control, a magnetic encoder, metal gears and an all-metal housing.

What is included?

One ES9054II servo, a servo-horn and mounting-hardware kit, and a user instruction manual.

Installation note: Published torque, speed and current values are reference specifications measured under defined test conditions. Actual response, holding performance, temperature and current draw depend on supply voltage, linkage geometry, mechanical load, endpoint settings, airflow and power-system capability. Avoid binding the linkage or stalling the servo for extended periods.
Product information

All parts are shipped fast from SYRACUSE, NEW YORK & some DROP SHIP ORDERS from San Diego, California. If there's an issue with something, please let us know and we will do our best make it right! SaltCtyRacingFPV, LLC dba "weBLEEDfpv.com" offers a (30) day return policy on all new unopened equipment, starting from the date the product(s) was delivered to the customer. Anything beyond (30) days of delivery will not be eligible for return. If the product(s) received have been opened, used or damaged, no return options will be offered. If the item is in brand new condition but requires to be repackaged, a (15%) restocking fee will be applied. The shipping cost for any unwanted product will not be refunded by SaltCtyRacingFPV "weBLEEDfpv.com" (It is recommended to choose a return shipping method with tracking).

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Please email at SaltCtyRacingFPV@gmail.com to contact us and initiate a return. Please contact us first before sending anything back. 

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Flight Controller / VTX Warranty Policy
 
At weBLEEDfpv, we are committed to providing high-quality products. However, due to the technical nature of flight controllers and VTX's the precision required for installation, our warranty policy for flight controllers is as follows:
 
1. No Warranty Post-Soldering: 
   Once any soldering has been performed on the flight controller / VTX's, we are no longer responsible for replacements, repairs, or refunds. The process of soldering can introduce various factors that may lead to damage, and we are unable to control or verify the conditions in which the soldering was conducted.
   
2. Pre-Soldering Inspection: 
   Before you begin soldering, we recommend carefully inspecting the flight controller  / VTX's for any potential issues. If any defects or issues are found prior to soldering, please contact us immediately for a replacement.
 
3. User Responsibility: 
   Soldering requires skill and experience, and improper techniques may result in damage to the flight controller, including but not limited to overheating or lifting solder pads. Please ensure you are confident in your soldering abilities before proceeding, as we cannot be held liable for any damages caused during installation.
 
4. Final Sale: 
   All flight controller sales are final once the product has been modified or soldered. We are unable to offer returns or exchanges on used or modified products.
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⚠️ FPV DIGITAL SYSTEM NOTICE

HDZero, Walksnail, VTX systems, and ultra-micro FPV electronics generate heat quickly while powered and require proper handling during setup and troubleshooting.

Bench setup without airflow/cooling can result in excessive heat buildup.

Once powered, configured, firmware updated, soldered, flown, or modified, products are considered used.

Manufacturer warranty may apply for BNF drones and electronic systems.

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Lithium Ion Battery No Acceptance Policy

For our lithium ion battery products, all sales are final. This means:

  • No Returns or Exchanges: Once your purchase is completed, we do not accept returns, exchanges, or cancellations.
  • Customer Responsibility: Please review all product specifications and details carefully before making your purchase.
  • Safety and Compliance: Due to safety standards and regulatory guidelines, we cannot process any post-sale modifications.

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Thank you for your understanding.

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