Generally, these housings are made of cast iron.
Plummer block housings are used in great number of machinery, equipment and installations. Plummer block housings constitute Bearing Units by using with self aligning Ball Bearings or spherical Roller Bearings.
These Housings are quality product in terms of accuracy, strength and rigidity.
Series available in plummer block housings:

SN 2 - SN 5 - SN 6