Rotary coaxial pipe joint - has sealing ring in plane of bearing balls and radially inside them

摘要

The joint is between two coaxial pipes rotating in relation to each other, guided by a single-row ball-bearing and sealed by a joint ring. The ring is in the plane of the row of balls and inside the latter in the radial direction. The bearing can be of the zero-clearance type. The design keeps the overall length to the minimum.