1) Sliding contact surfaces: Steel vs. Steel.
2) Materials: Body is made of carbon steel, insert bearing is made of high chrome bearing steel.
3) Heat treatment: Body surface is phosphorized.
4) Features of structure: The unit consists of a body and a spherical plain bearing GE..LO. With oil nipple.
5) Properties: Good wearability, corrosion resistance, self-alignment, heavy load capacity.