These square pillow block bearing mounts attach to the inside of a channel and have a ball bearing with a 1 inch bore for shafts and tubes. These bearing mounts have a width of 1.32 inch, a thickness of 0.33 inch, a 1 inch bore bearing.
Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components makes building complex electromechanical prototypes or finished projects a reality.