Grease lubrication in ball bearings is one of key technologies to reduce energy consumption and enhance lifetime in design of spacecrafts as well as general industrial machineries. From a view point of grease lubrication design. it is crucial to understand grease macro flow phenomena in ball bearings taking into account non-Newtonian property of grease. In the current study. https://bellfordtoysandhobbiers.shop/product-category/wooden-dollhouse-accessories/