Sleeve hardened steel HSB 75x90x70

HSB type sliding bushes, i.e., hardened bushes at a temperature of 840°C, are made of high-quality carbon structural steel, compliant with Japanese standard S45C, American 1045, and German C45. They have lubrication grooves inside and outside. The GB/T699-1999 standard specifies that the tensile strength of steel 45 is 600 MPa and the yield strength is 355 MPa. Hardness at the level of: HRC 60. The bearings are characterized by higher strength and resistance to deformation than ordinary steel.