Model SB and SA1 spherical bearings are self-aligning plain bearings designed for heavy loads. The inner and outer rings of these models use high-carbon chromium bearing steel that is hardened and ground; are treated with phosphate coating, which is highly resistant to corrosion and wear; and are seized with molybdenum disulfide (MoS2).
The spherical plain bearing is capable of receiving a large radial load and thrust loads in both directions. Furthermore, because of its high resistance to impact loads, the spherical plain bearing is optimal for low speed, heavy load oscillating components such as the cylinder clevises or hinges of construction and civil-engineering machinery and the suspensions of trucks.