F4-8M is a precision thrust bearing with grooved raceway. Its inner bore diameter is 4mm, outer diameter is 8mm and height is 3.3mm. The shaft washer (7.8mm diameter) is a little smaller than housing washer (8mm diameter). The dimension tolerance of inner bore and outer bore is -0.008mm to 0mm, and the tolerance for thickness is -0.12mm to 0mm.
F4-8M precision thrust bearing consists of 3 separable parts, they are housing washer, shaft washer and cage. The washers are made of 52100 chrome steel (Gcr15), and the cage is made of brass or stainless steel. There are 7pcs of steel balls in the cage, and the steel ball size is 1.3mm. Its stainless steel thrust bearing version is SF4-8M.
Lubrication is required for this bearing, and the lubricant can be grease or oil. With oil lubricating, the bearing can reach up to a max speed of 9,300 rpm. F4-8M can endure a maximum dynamic thrust load of 705 Newton, and a maximum static thrust load of 526 Newton. It is suitable to work in a temperature condition of -30℃ to 110℃.
Fitrun Bearing has been engaged in precision thrust bearing manufacturing for 20 years. We can customize the bearing to fit your special applications with low MOQ and no extra cost. Please contact with us to get a free quotation for your custom bearings today.