This versatile solution features programmable output motions with low-wear rolling contact. Larger inertia load transmission is achieved with internal cam ratio reduction while maintaining powerful torque with less motor horsepower. The STR’s unique no-backlash preloaded mechanism improves the overall dynamics to force output motions to a new level of rigidity and accurate servo controller performance. The compact design reduces footprint while offering high speed rotation with large bending moment capacity.

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With backlash as low as 2 arc-min and indexing accuracy to ±60 arc-sec, the STH sets the standard for smooth, repeatable rotary positioning of large inertia loads. Using Nidec’s modular design concept, the STH integrates either an inline VRL-070 or right-angle EVL-070 planetary gearbox to achieve reduction ratios from 12:1 to 400:1, giving OEMs flexibility across a wide range of system requirements.

Motor mounting is fast and precise using our optimized adapter system with active centering, ensuring perfect alignment and long-term system reliability. The STH Series is a strong upgrade path for OEMs transitioning from mechanical cam-driven indexers or pneumatic systems.

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