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Hitec 32645S HS-645MG High Torque 2BB Metal Gear Servo
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- Motor Type: 3 Pole
- Bearing Type: Dual Ball Bearing
- Speed (4.8V/6.0V): 0.24 / 0.20
- Torque oz./in. (4.8V/6.0V): 107 / 133, Torque kg./cm. (4.8V/6.0V): 8.0 / 10.0
- Size in Inches: 1.59 x 0.77 x 1.48, Size in Millimeters: 40.39 x 19.56 x 37.59, Weight ounces: 1.94, Weight grams: 55
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|Sold By||Spark Deals||AniMall||Horizon Hobby||Spark Deals||Horizon Hobby||Horizon Hobby|
|Item Dimensions||1.59 x 0.77 x 1.48 inches||1.58 x 1.6 x 0.79 inches||2.5 x 0.75 x 2 inches||1.59 x 0.77 x 1.48 inches||1.57 x 0.78 x 1.49 inches||1.6 x 0.8 x 1.4 inches|
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From the Manufacturer
The powerful HS-645MG is one of Hitec’s most popular servos. It’s the perfect choice for those larger sport planes or monster trucks and buggies requiring a durable high torque servo. Featuring our unique M/P and metal gear train technology, the HS-645MG offers one of the strongest gear trains available in any servo.
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I bought this one for 30$, and digital servo for 70$ to compare them for robotic arm application. This one is nearly silent, and has a very strong torque, nearly as much as 70$ digital one. I would even say, that I really like the way this servo sounds while working.
Digital servo for 70$ has very loud, high-pitch sound, which is very unpleasant to everybody around, and people asked me many times to switch off the robotic arm, as they did not want to hear this sound.
So I am now using only HS-645MG in all robotic arms. Strong work horse servo, reliable metal gears.
Highly recommend this product to anyone, good job, Hitec guys! And if you can, please silence you digital servos, because acoustics is the reason we cannot use them often :)
Good aluminum case and it feels solidly built.
It is also quiet at idle
Cons. It is a bit slow for my taste. Good for throttle applications but I see it being too slow for steering. Most certainly not a competition servo.
This a good servo with a solid build. Not the best on the market but it is far from the worst.
This servo is a little slow but would be good for high load situations.
Probably would also work for the rudder servo, have not tried it.