SparkFun
Servo - Hitec HS-85MG (Micro Size)
The Hitec HS-85MG packs impressive torque into a micro-sized package. With metal gears and a single ball bearing, this servo delivers up to 3.4 kg·cm (48.6 o...
The Hitec HS-85MG packs impressive torque into a micro-sized package. With metal gears and a single ball bearing, this servo delivers up to 3.4 kg·cm (48.6 oz·in) of torque at 6V while weighing just 21.9 g — making it an excellent choice for compact robotics, RC models, and mechatronic projects.
The servo features 180° rotation, a standard 3-pin connector, and comes with a full set of mounting hardware and horn accessories.
Key Features
- Metal Gears – Four metal gears for durability under load
- High Torque – 3.4 kg·cm (48.6 oz·in) at 6.0V
- Fast Response – 0.14 sec/60° at 6.0V
- Micro Size – Just 29 × 13 × 30 mm and 21.9 g
- Ball Bearing Output – Single ball bearing for smooth, reliable operation
- 180° Rotation – Standard servo range with C1 spline output
Specifications
- Operating Voltage: 4.8–6.0V
- Torque: 2.9/3.4 kg·cm (41.7/48.6 oz·in) at 4.8/6.0V
- Speed: 0.16/0.14 sec/60° at 4.8/6.0V
- Rotation: 180°
- Motor: 3-pole ferrite
- Spline: C1 standard
- Dimensions: 29 × 13 × 30 mm
- Wire Length: 160 mm
- Weight: 21.9 g
Ideal For
- Compact robotics and robotic arms
- RC aircraft and helicopter projects
- Pan-tilt camera mounts
- Mechatronic prototyping
Package Contents
- 1× HS-85MG Micro Servo
- 1× Double Arm Micro Horn
- 1× Four Point Micro Horn
- 1× Circle Micro Horn
- 2× Rubber Grommets
- 2× 2 × 15 mm Phillips Screws
- 2× Brass Eyelets
- 2× Servo Mounts
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- kg·cm
- A torque unit often used for hobby servos, meaning how many kilograms of force the servo can hold at a 1 cm arm length. A higher kg·cm rating means the servo can move or hold heavier loads, but power supply current needs may also increase.
- servo
- A servo is a motor with built-in position control, usually told to move to a specific angle by a control signal. It matters when you need repeatable movement, such as steering, arms, flaps, or linkages, rather than continuous spinning.
- Torque
- A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.
Find this product in
Robotics & Motion
Hitec HS-85MG Servo Datasheet
Datasheet · 40.6 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 572.0 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
