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SM-S4408M H/D Servo 8.6kg / .11 sec / 51g

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SM-S4408M H/D Servo 8.6kg / .11 sec / 51g

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SM-S4408M H/D Servo 51g / 8.6kg / .11 sec

Type: Digital
Gear Type: Metal
Bearings: Dual Ball Bearing
Motor Type: Carbon Brushed
Weight: 51g (1.8oz)
Torque: @ 4.8v / @ 6v
Speed: 0.13sec 60°@ 4.8v / 0.11sec 60° @ 6v
Spline Count: 25


  • Servo Torque(kg)(min. 0.01kg) 8.60
  • Servo Speed (Sec/60deg) 0.11
  • Servo A(mm) 33.00
  • Servo B(mm) 41.00
  • Servo C(mm) 28.00
  • Servo D(mm) 20.00
  • Servo E(mm) 54.00
  • Servo F(mm) 19.00

Dimension Diagram Guide

  • attributeset-11


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Esmail | Verified Buyer

  • Quality
  • Value
  • Overall

Customer Rated

Apr 10, 2013

Its a great servo replacement for my old futaba 9551 which is over price.

Quality of this servo is good.
Its a standard low profile servo good for 1/10 touring car.
Centers well.
Value for money
Will buy it again if HK replenish the stock

viktortarczali | Verified Buyer

  • Quality
  • Value
  • Overall

Customer Rated

Nov 06, 2012

Great low profile servo. Much better than the Bluebird ones. I had to replace some faulty Bluebird servos. It is a great choice. Low noise, strong and no chittering searching for the center.

Kaisar | Verified Buyer

  • Quality
  • Value
  • Overall

Certified Buyer Rated

Sep 28, 2012

I bought 2 nice working pcs. My project is not finished yet, so no flying data, but it looks like a rigid and quality servo. The dimension and the weight are pretty exact, this a short servo!

Bellow some data on 6Volts:

Max/stall current 2,2A

static load (with acceptable arm movement)

5kg -> 1,2A

6kg -> 1,5A

What I do not like is that at such loads servo won't move but the arm stays steady, trying to move it on opposite direction stalls.

Some data for reference

Turnigy 620DMG:

stall 2,5Amps

5kg 1A

6kg 1,7A

Vigor VSD-18MB

stall 2,5Amps

5kg 1A

6kg 1A

At 4kg load the VSD's arm moves, but has less narrow band compared to the other 2.

P.S. I am not the best bench-tester.

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