F4-9 is a 4mm ID thrust bearing with flat raceway. It has an inner bore diameter (ID) of 4 mm and a thickness of 4 mm. Its shaft washer is a little smaller than housing washer, the diameter of shaft washer is 8.8mm, while the diameter of housing washer is 9mm. It is an ABEC-1 grade thrust ball bearing, and the tolerance class is in compliance with ABEC-1 standard.

F4-9 thrust bearing consists of 3 separable parts, they are housing washer, shaft washer and retainer / cage. Both the housing washer and shaft washer are made of 52100 chrome steel (Gcr15), and the retainer / cage is made of brass or stainless steel. There are 6 pieces of steel balls in the cage, and the steel ball size is 1.588 mm. The net weight of F4-9 bearing is 1.5 gram approximately.

This thrust bearing can endure a max dynamic thrust load of 800 N, and a max static thrust load of 520 N. The bearing can reach up to a max speed of 8,000 rpm with oil lubricating. Its working temperature range is -30℃ to 110℃.

The thrust ball bearing is typically used in applications of motor, automobile, electric appliance, machine tool, etc. Usually, factors of ring material, cage, max load capacity and lubricant are taken into consideration while selecting the thrust bearing for the application.

Other 4mm ID thrust bearings are available at Fitrun Bearing, such as F4-8, F4-8M, F4-9M, F4-10, F4-10M and their stainless steel versions. We can customize these bearings to fit your special applications. Please contact with us to get a free quotation for your custom bearings today.