STOBER introduces next-generation KS servo gearbox with compact design

Now available from STOBER, the redesigned KS servo gearbox adds expanded ratio options, higher stiffness, and a geared-motor option to simplify integration for OEMs and machine builders. But this generation isn’t just an iteration. It represents a sharper, more intentional approach to gearbox design. Every enhancement—from the dramatically expanded ratio range to the tighter footprint to the geared‑motor option—was engineered to remove constraints and open new possibilities for machine builders. It’s the KS you know, elevated for the demands of today’s fastest‑moving industries.

The new generation KS: Designed to outperform, engineered to empower

Modern automation leaves no room for inefficiency. OEMs and machine builders need motion systems that deliver more capability, more precision and more adaptability—all in less space. The new Generation KS was built for exactly that challenge. It brings a suite of performance upgrades that make it stronger, more flexible and easier to integrate into almost any machine architecture.

Whether you’re building compact, high‑density systems or designing for aggressive dynamic performance, the new KS gives you a platform that’s ready for more—more speed, more precision and more control over how your machine performs.

More ratios. More control. More precision.

The expanded ratio range is one of the biggest leaps forward in the new KS. Engineers now have more than double the ratio options of the previous generation—a substantial boost in flexibility. This lets you fine-tune speed, torque, and motion specifications with far more accuracy and without oversizing components. You get tighter performance, lower energy consumption, and less mechanical stress on your system.

A reduced‑backlash configuration tightens motion, eliminates lost movement and sharpens positional accuracy down to the finest details. Choose this option when every micron matters—from robotic pick‑and‑place to precision cutting and synchronized servo axes, the KS delivers motion that’s smooth, surgical and highly controlled.

Mechanical flexibility that works for you

No two applications are the same, and the KS is built to adapt. Choose from three output configurations—solid shaft, hollow bore or shrink ring—to match your exact machine requirements. These options help eliminate unnecessary adapters, reduce redesign time, and streamline installation across a wide range of industries and machine types. Whatever your machine needs, the new KS snaps cleanly into virtually any machine architecture—no adapters, no redesign, no wasted time. The result: a gearbox that fits your machine, not the other way around.

Compact power with a fully engineered geared-motor option

Machine space is valuable. The new KS delivers more capability in less space. Its smaller footprint supports tighter machine layouts and cleaner system architecture, especially in space-restricted environments like packaging lines, food processing systems and multi-axis automation cells.

And to push compactness even further, the KS is also available as a complete geared-motor solution. Pairing the KS with a STOBER EZ motor shortens the drive train, reduces total components, and creates a clean, space-efficient assembly. It’s a powerful way to simplify installation while boosting overall machine performance.

Higher torsional stiffness for sharper, repeatable motion

When precision matters, stiffness matters—and the new KS delivers. Its improved structural rigidity minimizes compliance and supports crisp, repeatable motion, even under aggressive acceleration or high-speed operation. With reduced-backlash options available, this generation sets a new performance benchmark for applications that demand exceptional accuracy with razor-sharp positioning, cleaner motion profiles, and zero wasted movement.

Bring the speed — up to 8,000 RPM

Speed is the new currency of productivity, and the new Generation KS delivers it. With input speed capabilities up to 8,000 RPM, the KS enables faster cycle times and higher throughput without sacrificing reliability. Push your application into the fast lane with high input speed capability, powering faster indexing and shorter production cycles.

This is high‑speed performance without compromise. The KS is engineered to run hard, stay reliable and keep your line moving.

25% more torque: More muscle without upsizing

Power density gets a major boost in the new KS. A redesigned internal gear geometry delivers 25% more torque in the same footprint, allowing the new generation KS to handle heavier loads, battle higher inertia, and boost performance without upsizing. That’s the kind of upgrade engineers dream about: Cost savings, efficiency, and power all in one upgrade.

All‑in‑one system: STOBER KS + motor + rack & pinion

The KS doesn’t just stand alone—it plugs into a complete, unified STOBER ecosystem. Pair it with a STOBER motor, KS EZ geared‑motor configuration, or the ZS rack & pinion system to build a fully engineered drive package from a single vendor.

One ecosystem. One CAD file. One support team. Zero compatibility issues.

This is system integration made simple—a seamless, single‑source solution that cuts engineering time, reduces components and ensures everything works together right out of the box.

Ready to build a smarter, stronger, more compact machine?

Every enhancement in the new generation KS serves one purpose: To give engineers more latitude in how they design, build and optimize their machines. Whether you’re chasing higher dynamic performance, better integration, cleaner layouts, or greater precision, the KS is designed to elevate your system’s capability.

The new Generation KS isn’t just an upgrade — it’s a platform that expands what’s possible in modern automation. If you’re tightening footprints, increasing throughput or pushing for greater precision, the KS gives you the performance headroom and integration freedom to get there faster.

See the engineering behind the performance

Take a deeper look at the innovations that shaped the new KS. Download the exclusive whitepaper to explore the technical specs, design advantages, and application insights behind the next‑generation KS gearbox. Download the KS Whitepaper (PDF).

Build without limits: Start designing with the new KS today

Whether you’re an OEM, machine builder or systems integrator, our team is ready to help you configure the perfect KS solution for your application—from ratios and output interfaces to the fully engineered geared‑motor option.

The new generation KS was built to remove constraints—in size, ratios, mechanical flexibility, and performance. If your next machine demands more capability in less space, the KS is ready to deliver. Pair it with STOBER’s application support, and you’re not just choosing a gearbox, you’re choosing a competitive advantage.

Let’s build something powerful.