Smraza SG90 9G Micro Servo Motor Kit Metal Gear for Arduino RC Plane 4 Pcs | 180°, 1.9kg·cm torque @6V, 0.08s/60° speed, 4.8–6V,metal motor gear & metal shaft for RC Airplane Robot Arm DIY

Look, if you’ve spent any time in the hobbyist world, you know the heartbreak of hearing that crunch-grind-pop sound when a plastic-gear SG90 hits a snag. It’s the universal sound of a project going on hiatus. That’s why this Smraza 6-pack is basically the "adulting" version of the standard micro servo. It's cheap, it's tough, and it fixes the biggest flaw of the entry-level kits.

This is a nice set of these small servos that work well for my proof of concept project. They aren't super powerful, but not advertised as such, but they'll do the job for a project you might be planning that needs many multiple servos to work. I hooked one up to a servo controller and it worked well and was very quiet. 180 degrees of movement which will work fine for my project ahead. If you need a bunch of little plastic geared servos, this is a great assortment that will give you 10 of them. I'm very satisfied with the purchase. Just as advertised.

Great product, in a nice clear plastic container. All ready for my next project, and a few left over for spares.

They work good.... while they work. They are cheap plastic drive servos and if you drive them too hard into the 0 or 180 degree stop they get stuck, and burn out quickly. The gears strip easily too. If you have created a very nice mechanism for them to control, and not run into the stops, they work great. That is why I gave them a 4. I pushed the ones that broke too hard.

Smooth operating servos

These are the same size as sg90's but use less power and produce slightly less strength . But plenty strong pull for my airplane control surfaces . but that is good for models 6 foot span and under for me . No extra BEC needed for my model .

Bought the ten-pack on the assumption that there might be one or two that won't work very well. They're all working just as they should through a simple Arduino sweep test. These are tiny, plastic-geared servos so they won't operate the landing gear on your full-sized Airbus 380 model or run for the next 50 years, but for what they are they're torquey little guys. Would buy again. But then I've already got ten of them.

I recently picked up a 10-pack of Smraza SG90 9G Micro Metal Servos for my DIY robotics projects, and my experience has been a bit mixed. On the positive side, the servos that did work delivered the expected torque and responsiveness, allowing for accurate and stable control. They integrated well with my Arduino setup and seemed to hold up under moderate loads, achieving the advertised 9 grams of force without issues. However, the biggest disappointment was that 4 out of the 10 servos were defective right out of the box. That’s a pretty high failure rate, and it’s frustrating when nearly half of the set is unusable. The functioning units are reliable and do exactly what I need, but the quality control concerns make me hesitate to recommend them without reservations. If you’re lucky and all of them work, these servos can be great little helpers in various projects. But the risk of receiving multiple defective units is something to keep in mind if you’re considering this 10-pack.

Works fine!

VERY HAPPY WITH MY PURCHASE