A rod end bearing, also known as a spherical rod end joint or universal joint, is a specialized bearing designed for use at the end of rods or in hinged parts, typically at the ends of mechanical linkages. Rod end bearings can withstand significant radial and axial loads and allow multi-directional movement, making them suitable for applications that require oscillating, tilting, or rotational motion. For example, they are used in hydraulic and pneumatic cylinders, agricultural machinery, construction equipment, and various industrial machines.

POS... GAKR..PB Metric Rod End Bearings Plain Bearing Bush Maintenance Required For Construction works  

This products are connectors that support loads and allow motion control.