ISUTAMI 2-bolt pressed steel flange mounted unit, also known as ISUTAMI 2-bolt diamond pressed steel flange mounted unit, is a combination of a pressed steel housing and a spherical bearing. It is an important device in transmission mechanical system. The mounted bearing is in a diamond-shaped flange housing, which is made of low-carbon steel strip with the zinc-plated surface for corrosion protection. Each side of the flange has a square bolt hole for fixing and mounting the bearing unit. The spherical bearing installed in the bearing housing is a rolling ball one, which mainly serves to reduce the friction of the equipment during working. There is a dust-proof rubber race on each side of the bearing. Moreover, the inner ring of the bearing is generally divided into two types: a set screw locking type and an eccentric collar locking type, and the round shaft can be fit for the specific inner ring size.