The BCHF48 is an upward-facing ball roller unit featuring a flange mounting and lock-nut design made with milled stainless steel. It is built for multi-directional material handling, feeding, and transmission systems. Model BCHF48 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description The BCHF48 is a ball roller/ball transfer unit designed specifically for upward-facing applications, often referred to as a "bull's eye wheel" or omnidirectional ball bearing.