The MG91 is a nice small RC servo ideal for projects where size and weight are important.

RC servos are hobbyist remote control servos typically used in radio-controlled models, where they provide actuation for various mechanical systems such as the steering of a car, the flaps on a plane, or the rudder of a boat. These servos are not industrial grade and are not recommended for continuous heavy use.

This servo has slightly more torque than the previous revision. Also, unlike the MG90 the MG91 does not have mechanical stops meaning that an unpowered motor can rotate continuously in either direction but with a single rotation pot, will always snap to the same range when power is reapplied.


This servo can be controlled by an RC servo controller. You can find a list of suitable controllers on the Connection & Compatibility tab.

Accessories Bag

The MG91 comes with 3 servo rudder pieces and 1 set of screws.


Product Specifications

Motor Properties
Motor Type Limited Rotation Servo
Range of Rotation 175°
Maximum Speed at Rated Voltage 545°/s
Rated Torque 2.2 kg·cm
Physical Properties
Gear Train Material Metal
Bearing Type Dual Ball Bearing
Motor Length 29 mm
Motor Width 23 mm
Motor Depth 12.2 mm
Wire Length 250 mm
Weight 13 g
Electrical Properties
Rated Voltage 5 V DC
Rated Current (on 1061 controller) 90 mA
Rated Current (on 1066 controller) 100 mA
Stall Current (on 1061 controller) 480 mA
Stall Current (on 1066 controller) 430 mA


3205_1 - Towerpro MG91 Micro Servo

  • Brand: Phidgets
  • Product Code:ES000130
  • Availability:In Stock
  • 14.00€