ISUTAMI pressed steel round flange mounted unit, also known as ISUTAMI 3-bolt pressed steel round flange mounted bearing unit, it consists of two main components: a stamped steel housing and an insert spherical ball bearing. The housing is with a round flange and is made of low carbon stamped steel strip with zinc plated on the surface, so the housing has an anti-corrosion function. Three square bolt holes are evenly distributed on the circular flange, and the angle between the holes is 120°. These bolt holes are primarily used to secure and mount the entire bearing unit. The spherical bearing built into the steel housing is a rolling ball bearing, which is mainly used to reduce the friction of the transmission equipment during operation. There is a dust-proof rubber ring on each side. In addition, the inner ring of the bearing is generally divided into two types: a set screw locking type and an eccentric locking type, which can fix a circular shaft of a corresponding size. The series is pre-lubricated and one half with grease fitting, one half with grease groove.