... : Linear Shaft. Material: CK45,GCR15,stainless steel Hardness: HRC62 Precision: g6 Quality: ISO9001:2000. Bearing: Linear Shaft: As a ... industry robot, the automatic record machine, the computer, the precision printer, the special cylinder bamboo pole, model industry automated machines ... of his hardness, it may also lengthen the ordinary precision machinery's service life. Feature: Material: CK45,GCR15 ...