350kg High Torque RC Servo, 2 in 1 Mode 16V~24V High Voltage Full Metal Gear Digital Servo Angle 360°

I am building a large (5 foot tall) robot for Halloween and needed a way to rotate the head (a 16" plywood cube). This easily handles the job and is far more powerful than the strongest 1/5 hobby RC servo that I could find at double the price. It also has a D-profile 8mm output shaft which is much better for high torque applications than a 25T RC servo output. I really like the manual potentiometers for precision adjustments of center point and range. Mounting this is easy as well. Lots of holes with pre-molded nut retention, etc. The plastic housing I believe is glass reinforced nylon so is very strong.

Solid piece of equipment. Perfect for tinkering! Very heavy duty, in fact be careful you could hurt yourself if not careful

Worked well with Docyke controller

The difference between the s350 and s550 is the planetary gear ratio. I use both of these. The S550 is slower but has 57% higher torque. The mounting holes are the same. Electrically they are similar. The power connector on the s550 is capable of higher current and is an improvement over the 2.54 mm spaced pins on the s350. My application needs two of the higher torque units, but the final drive gears failed on one (per mfg specs, the motor torque limit should have prevented this). Amazon immediately replaced the bad unit.

Slings a ten pound weight around like nothing. One of the beefiest hobby servos I've used and will be getting more. Just wish I could get individual parts from kits on here

I was going to use this servo to provide the steering for a large RC project. The servo is solidly built and has multiple mounting choices. Once I got it mounted I temporarily wired it to the 6S (22.2V)battery being used to power the project so I could center it and connect the front wheels. I applied the power and the power was on for a few minutes before I turned it off. Nothing happened as expected. Next I connected the PWM output from the RC receiver and started to cycle it. That's when the magic smoke was released and a loud pop was heard before I could turn off the power. Before things went wrong the shaft was responding to the controller input. I checked the polarity and voltage of the supply and signal. The batteries were actually at 11.8V with proper polarity. The signal and ground were properly connected. I am using a DumboRC X6FG receiver. The receiver is supplied with 7.4VDC to power another servo. I don't know if the issue was caused by the signal voltage was too high or this was an infant failure issue. I have ordered a replacement servo and reduced the receiver supply to 5.0 VDC.

I have three of these servos, and they're very, very powerful. Crazy amounts of torque, and easy to set up, overall. The physical design is nice, with good placement of bolt positions. Pretty accurate in positioning, too. I wish they had a different and more-rugged power connector, though. One caveat: They're powerful enough and fast enough to be moderately dangerous. Make sure to stand clear of them and _keep your hands away_ when they're powered up. You can limit their arc and initial position easily enough, but if you moved the controller position while they're turned off, they'll go to the new position right away, at full speed and power. I ended up including some physical stops for the lever one was driving, and used a belt drive (that can slip some) for another. For the price, you won't find another servo with more power and features, especially in this form factor.

great product

Nice product and service