Metric Precision Ground Linear Motion Shafting
1060 Induction Hardened TG&P (60/65 Rockwell C scale) ASTM A29, ASTM A108 and ASTM A 576
Parker Steel also offers E52100 -18/20 C scale and 440C 25 max C scale- non hardened material in the above sizes.
Standard linear shafting is made from 1060 steel which is case hardened to a surface hardness of Rockwell 60 hardness. This is the best choice for applications which employ linear ball bearings or roller type bearings. This material is manufactured with tight tolerances for long bearing life.
RC60 will oxidize and rust. Thus, lubricated bearings keep RC60 shafting protected. Keep this in mind when using a dry running bearing. This will protect the highly polished bearing surfaces from corrosion and wear, a lubricant is recommended for most applications. Use light oil for good surface adhesion and greater bearing protection.