Lightweight has become a clear development trend for collaborative robots. Unlike heavy industrial robotic arms, cobots require lower moving inertia, safer contact performance and compact overall structure, which puts forward strict requirements on supporting bearings.

Standard size ball bearings often take up too much space and add unnecessary weight to joint structures. This is where thin section bearings stand out. Constant cross-section thin wall bearings maintain consistent cross-section dimensions even at large inner diameters, leaving enough hollow space for wiring and air pipelines inside robot arms.

Four-point contact thin section bearings are widely chosen for cobot auxiliary rotating joints. They can cope with combined radial, axial and overturning loads during frequent forward and reverse rotation. Many equipment designers switch from conventional bearings to thin section models to simplify mechanical layout.

We have served multiple cobot manufacturers with matched thin section bearing solutions. Apart from standard KA/KB/KC series, we also accept small-batch customized production for special clearance and precision grades. If you are optimizing a new collaborative robot prototype, get in touch with our engineering team for bearing recommendations.