What is the SN bearing seat?
The bearing seat is divided into gray cast iron, cast steel, ductile iron plastic, stamping zinc alloy copper tile base but SN213 has only three kinds of material that is the most commonly used ferrosteel (this is the most commonly used on the market) which is (steel, wear-resistant, pressure,) in a nodular cast iron (with relatively less)
SN is the equal diameter roller bearing base.
SN is the equal diameter roller bearing base
