Rolling tower crane repair Points to note

Most tower crane used in the rolling bearing should be renewed in the repair and overhaul period. Rolling bearing secondary site without carefully checked found to be defective may continue to be used. Where the ball and spacer ring rust, raceway surface wear and fatigue erosion, balls and steel columns for wear scratches, damage and isolation ring inside, coat cracked bearings, it must be replaced. The inspection can continue to use the rolling bearing must be clean, in order to continue to use.