Home Industry InsightBLDC
Looking for a suitable motor? Looking for a suitable motor?
Looking for a suitable motor?

servo motor sg90 dimensions

小编

Published2025-10-17

Looking into the world of small robotics or DIY projects, the SN90 servo motor often comes up as a favorite. You might wonder, what makes it stand out? One thing people focus on is its dimensions, because size really matters—a lot—whether you’re building a tiny robotic arm or a compact drone. The SN90, or SG90 as some call it, usually measures around 23mm in width, roughly 12mm thick, and about 40mm long. These aren’t just numbers; they tell you how well it fits into your design—compact enough to keep things sleek, but still powerful enough to move your servo arms smoothly.

This motor isn’t bulky, and that’s part of why it’s so popular. It packs a punch relative to its size—about 1.8 kg/cm stall torque, if you’re into the technical details. But what’s neat about the dimensions isn’t just fit; it’s about versatility. You can slot it into tight spaces if you’re designing a mini robotic hand, or use it to control tiny levers that require precise, quick movements. Its size and lightweight nature mean less strain on power sources and better responsiveness, a combo that’s hard to beat for small-scale projects.

People often ask, "Will this servo be too big for my project?" Well, it depends on your setup. If your chassis is a bit cramped, no worries—its 23mm width slides easily into most compact assemblies. Plus, with its standard mounting flanges, you won’t wrestle with complicated setups. The dimensions aren’t just about fitting; they’re about function and ease of assembly. You get reliable, predictable movements, especially considering the servo’s 1.5ms to 2.1ms pulse width range, which correlates closely with how precisely you can control its position.

And here’s a little insight: the size of the SG90 means it often uses plastic gears, making it lighter but sometimes less durable under high load, so understanding its dimensions helps you match it to your application—not every build needs a tank. For delicate tasks like camera gimbals or small robot limbs, its size truly shines.

Designers love it because it’s a smart mix of size and performance. You’re not hauling a bulky motor around; instead, you get a compact, efficient component that doesn’t compromise on functionality. Whether you’re creating a whisper-quiet robot or a nimble mini drone, knowing these measurements guides you in making the right choice—no surprises, just smooth, predictable movement.

So, when you’re picking a servo for your project, just remember: that 23mm width, 40mm length, and lightweight build aren’t just trivial specs—they’re the core of what makes the SG90 a go-to choice. It’s like the perfect puzzle piece, fitting snugly but delivering exactly what you need without weighing you down or complicating your design process.

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.

Powering The Future

Contact Kpower's product specialist to recommend suitable motor or gearbox for your product.