The SP-12 is a heavy-duty, flanged ball transfer bearing (or ball caster) widely used in conveyor systems, feeding mechanisms, and material handling. It features a primary ball surrounded by smaller support balls, allowing for omnidirectional movement. Model SP-12 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description The bearing model "SP-12" typically refers to a ball transfer unit, commonly used in conveyor lines and logistics equipment. However,