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sg90 servo motor dimensions

小编

Published2025-10-17

Looking into the world of small robots, DIY projects, or even just tinkering with mini-machines? You’re probably familiar with the promising potential of tiny, reliable motors. Among these, the SG90 servo motor stands out as a tiny powerhouse, packing a punch despite its size. But what makes it so fascinating? Let’s focus on its dimensions and why that matters when you’re designing or upgrading your setup.

Imagine holding a toy car or a little robotic arm—what you see isn’t just about motors turning wheels or moving joints. It’s also about how much space they take up. The SG90 servo motor is known for its compact size, roughly 23mm in width, 12mm in height, and around 40mm in length. It’s a little chunk that fits neatly into tight spots, which is probably why it’s loved by hobbyists and professionals alike.

The dimensions aren’t just numbers—they’re a crucial factor when selecting a servo for projects where space is limited. Picture a drone frame, a robotic hand, or a model train: a bulky motor simply won’t cut it. That’s when the 23mm x 12mm x 40mm size of the SG90 makes all the difference. You get enough torque to handle small movements, but without sacrificing precious space.

But wait—what about weight? Many overlook how much these tiny motors weigh, and that can be just as important. The SG90, weighing roughly 9 grams, keeps things light and nimble. It’s like adding a feather to your project but gaining precision and control. That weight ratio helps maintain balance and energy efficiency, especially in battery-powered setups.

Here’s a question that often pops up—say I want to use multiple servos in a compact robot. Will the size of the SG90 limit me? Not at all. Because the dimensions are precise and standardized, you can stack a few without overcrowding your design. Plus, the servo’s small size doesn’t mean it sacrifices too much on performance. Its typical torque—around 1.8 kg·cm—fits well with lightweight robotic or automation tasks.

Given these specs, does it mean that a larger motor would always be better? Not really. Sometimes size and power go hand in hand, but the size tells you about fit and versatility. You want something that can slide into the crammed spaces of your project while offering enough force to get things moving smoothly.

What about durability? The SG90’s dimensions also influence its robustness. Smaller motors tend to be less exposed to shocks, but their design often incorporates reinforced materials. Being compact means fewer parts that can get damaged quickly, which is a big plus in portable or outdoor applications.

In the end, choosing the right servo size ties directly into what you’re building. Are you creating a delicate display model or a tiny robotic arm? The 23mm by 12mm by 40mm size of the SG90 makes it remarkably adaptable. It’s like that reliable friend who always fits in and gets the job done without fuss.

So, whether you’re customizing a drone, crafting a remote-controlled gadget, or designing a miniature robot, keep those dimensions in mind. The SG90 servo motor might be small, but its flexibility and reputation for dependable performance make it a big asset in the toolbox. Think about your space constraints, weight needs, and how much force is necessary—you might just find yourself gravitating toward that compact yet mighty little motor.

Established in 2005, Kpower has been dedicated to a professional compact motion unit manufacturer, headquartered in Dongguan, Guangdong Province, China.

Update:2025-10-17

Contact a motor expert for product recommendation.
Contact a motor expert for product recommendation.

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