Servo motors - Specs

[last updated: 2021-04-05]

(go to:) servo motors - home page
-----

• model HM MS10:
  • high torque (20 kg-cm), metal gear, digital 360deg continuous rotation
    bought 2019-09-10 from AliExpress, $12 for 3@
  • 3 wires: org (signal), red (+5v), brn (gnd)
  • specs:
    5 - 7.4v
    @6v: 0.16sec/60deg, 80ma, 15 kg-cm
    @7.4v: 0.14sec/60deg, 100ma, 20 kg-cm
  • actual current draw:
    powered with 5v supply
    full speed: ~ 300ma
    stalled: ~ 600ma
  • Did some searching for a splined drive gear, but unsuccessful, so drafted and printed my own. The drive spindle has an OD of 5.87mm, with 25 teeth.
  • The drive spindle has a center hole, threaded M3-0.50

  -------------------------------------

• Tower-Pro Sub-micro Servo SG90 (Ali?)
  • 180deg
  • home/center/"0" position is 1.5ms pulse
    "90" position is 2ms pulse
    "-90" position is 1ms pulse
    lock-to-lock may be less than full 180deg
  • 3.0 - 7.2v operating voltage
  • stall torque 1.6 kg-cm @ 6v
    1.2 kg-cm @ 4.8v
  • speed 0.12 sec/60deg at 4.8v
  • ?22 tooth spline

  -------------------------------------

• Tower Pro SG-90, micro servo, 9g 360deg continuous rotation
  • From: (link to:) AliExpress
  • Purchased 2020-04, received 2020-06
    Advertised as 360deg, and indeed perform to that,
    however markings are the same as the 180deg SG90 (??)
  • Also: gearbox appears to be fluid (lubricant?) - filled,
    and leaks a bit around the hole where the spline gear exits
  • 360deg
  • 1.5 kg-cm stall torque
  • 4.2 - 6v operating voltage
  • 0.3 sec/60deg rotation speed
  • 21-tooth spline by my count
  • could not see any machined threads in drive spindle, and
    screws included in the kit are #2 sheet-metal, which indeed fit

  -------------------------------------

• Tower-Pro Sub-micro Servo SG51-R (ADA: 2201 $5.95)
  • 180deg
  • home/center/"0" position is 1.5ms pulse
    "90" position is 2ms pulse
    "-90" position is 1ms pulse
    lock-to-lock may be less than full 180deg
  • 4.8v operating voltage
  • stall torque 0.6 kg-cm
  • speed 0.2 sec/60deg
  • 22 tooth spline

  -------------------------------------

• Analog Feedback Micro Servo (ADA: 1449 $9.95)
  • 180deg
  • home/center/"0" position is 1.5ms pulse
    "90" position is 2ms pulse
    "-90" position is 1ms pulse
    lock-to-lock may be less than full 180deg
  • ?? operating voltage
  • stall torque 1.6 kg-cm at 6v
  • speed 0.1 sec/60deg
  • 22 tooth spline
  • white wire is feedback/position potentiometer
  • Adafruit demo code

  -------------------------------------

• TD-8130MG:
  
  
  • 30 kg-cm torque
  • Readytosky brand, Blueprint model
  • AliExpress $46.36 4-pk
  • Waterproof, 360deg continuous rotation
  • (on label:) "PWM 500us - 2500us"
  • Operating voltage: 4.8V - 7.2V
  • No load speed: 0.24sec/60° - 0.17sec/60°
  • current: 140mA - 200mA
  • Peak stall torque: 29.5kg.cm - 32kg.cm
  • Stall current: 2600mA±10% - 3400mA±10%
  • Neutral position: 1500usec control pulse

  -------------------------------------

.

.

.

eof