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Availability:
In Stock.
Arrives
Dec 3 – Dec 19
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At a glance
- Condition
- New
- Size
- 1 Pcs
- Model
- ES 9051
- Dimensions
- 0.78 x 0.33 x 0.91 in
- Age Range Description
- 14 years and above
- Operation Mode
- Manual
Features 5
- Genuine EMAX Quality - Authentic EMAX ES9051 II micro digital servo. No counterfeit, no compromise. Stable performance and reliable control you can trust.
- Fast Digital Response - Speed: 0.090.01 sec/60 (4.8V) | Torque: 0.8 kgfcm | 180 rotation. Instant, accurate positioning for smooth motion.
- UltraLight & Compact - Dimensions: 19.78.323.2 mm | Weight: only 4.8 g. Perfect for weightsensitive RC planes, micro robots, and compact STEM builds.
- Wide Application - Ideal for RC cars, boats, airplane, robot arms. Essential for STEM, Arduino, and Raspberry Pi projects.
- 3Month HassleFree Warranty - Free replacement or refund for any quality issue within 3 months. Scan the QR code to contact us directly.
Description
100% Genuine EMAX ES9051 II – 4.3g Digital Servo Faster, lighter, and more compact—optimized for RC models, robot arms, and STEM projects. Features digital precision and lightweight plastic gears for swift, agile response in tight spaces. Specifications: Voltage: 3.6V –6.0V Torque: 0.85 kg·cm max (4.8V) / 1.0 kg·cm max (6.0V) Speed: 0.07 sec/60°(4.8V) / 0.06 sec/60° (6.0V) Travel Angle: 180°(500–2500 µs) / 90° (1000–2000 µs) Weight: 4.8 g | Wire Length: 18 cm Dimensions: 19.7 ×8.3 × 23.2 mm Gear Material: High-strength plastic Plug: Universal Futaba / JR Package Includes: 1 × ES9051 II Digital Servo 4 × Horns & Screws Set HAWK’S WORK is an expert in RC flying. We provide the coolest and most interesting RC products and parts to users all over the world. About Us We love flying, especially flying toys that are interesting and creative for all ages and all levels. We design, make and supply the coolest RC aircrafts. We offer a friendly, approachable and best in class service. Join us to feel the excitement and fun of flying.
Specs 13
| Brand Name | HAWK'S WORK |
|---|---|
| Age Range Description | 14 years and above |
| Number of Packs | 1 |
| Set Name | EMAX ES9051 II Micro Digital Servo (1 Pack) |
| Manufacturer | EMAX |
| Item Highlight | 4.3g ultra-micro digital servo, 0.07s/60° speed, 0.85kg·cm torque 4.8V, for RC plane/car/boat/robot & STEM/RPi projects |
| Model Number | ES 9051 |
| Manufacturer Part Number | ES 9051 |
| Manufacturer recommended age | 14 years and up |
| Educational Objective | Develop technical skills in robotics, programming, and electronics through hands-on projects. |
| Operation Mode | Manual |
| Size | 1 Pcs |
| Item Dimensions | 0.78 x 0.33 x 0.91 inches |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Dec 3 – Dec 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Great little servos, perfect for small rc planes
I use a pair of these servos on a dream flight Alula. I’ve been pretty rough on them and they’ve held up really well so far! Always have been a fan of Emax servos and these have been great as usual!
Reviewed in the United States on March 3, 2026 by J B
Small Tiny Servo
Its as described and price well for a 2 pack. They are not the strongest micro servos out there, but they get the job done for say a medium load project. Currently used them to replace a burnt out servo on a mini rc plane. So far working well with no issues.
Reviewed in the United States on May 1, 2025 by Michael
Happy to operate on a single LiPo cell
Size: 4 Pcs
These are light and useful in small RC models. One of their singular traits is that they seem to be happy to operate on 3.7 volts or less--a single lipo cell. I think most small servos need at least 4 volts and are "unhappy" less. I use them on models where l don't want the weight or extra voltage of either a 2S Lipo pack or a 4 cell NiMh receiver pack. These will run just fine on a single cell "gumstick" style LiPo battery.
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Reviewed in the United States on May 26, 2025 by Michael J. Myers
Wouldn't put a heavy load on them
These servos work as expected for small RC projects. They aren’t the strongest, but they are responsive and smooth. If you need something with more torque, you might need a bigger model
Reviewed in the United States on March 1, 2025 by Steve H.
nice deal on micro servos
Size: 4 Pcs
fast shipping on a nice rc product. Just what I needed for a rc glider! Great li
Reviewed in the United States on November 28, 2025 by Randal Palmer
works well
Size: 1 Pcs
I bought it for use with a Raspberry Pi 5 and it (so far) has worked like a champ. Currently it's just doing the movement without anything attached properly, but I wanted to see if it would be able to sustain the weight that I want to use it for. I have a 12 ounce weight attached to the rocker and it seems to have no problem what-so-ever with moving it. I had to anchor the unit to my work table because the weight is probably 10 to 20 times the weight of the servo motor. Anyway, I'm looking forward to putting it through it's paces, but I have to wait for 3 parts to arrive. I will update if it doesn't work out properly.
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Reviewed in the United States on November 11, 2024 by Brian W.
Tiny servo with some punch
Size: 1 Pcs
This is a very small servo as you can see how big it is in my hand. The first thing I did was attach it to a simple Arduino circuit I built and put it through it's paces. I was surprised at how much torque it has given how small it is. How will it hold up after some serious use is impossible to tell right now. My experience has been that with servo's, especially small ones like this, is that as long as you don't work them more than 50% of their rating, they are generally pretty rugged and will last. I haven't opened this one up and I don't really want to, but the add shows all plastic gearing. At this price point that's expected, but just know that heavy use using small plastic gearing generally doesn't hold up very long so use this accordingly. For a budget servo that only needs to do simple low torque things like opening a small door or hood, this will do.
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Reviewed in the United States on November 7, 2024 by Tswoodshop
Plastic gear servo that is great for light duty applications
Size: 1 Pcs
I recently had the opportunity to use this 4.8G Servo, in a project involving a small robot vehicle for my Raspberry Pi experiments. The servo's compact size and light weight (4.8g) were perfect for my needs, fitting neatly into limited spaces without adding significant weight. Performance-wise, the servo operated reliably which was more than adequate for the precision movements required in my project. The servo performed consistently over several hours of operation without any noticeable lag or jitter. However, one aspect to consider is that the plastic gears will not withstand very high-stress applications and the lifetime will not match that of metal gears. Bottom Line: This servo is a solid choice for hobbyists or anyone looking for a reliable micro servo for light-duty applications or in STEM or Raspberry Pi projects. Users should be mindful of its limitations with plastic gears for more intense use cases or when durability is a factor. For the right application it is a great servo and I recommend it.
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Reviewed in the United States on January 25, 2025 by Brian