Heat treated steels such as 4140 or D2 are used for manufacturing lathe chucks for extreme use applications. Yield strength is ≥ 800MPa and jaw bardness of 58-62 HRC improves wear resistance. Proper spindle alignment is provided by the precision grounded backplate which guarantees runout ≤ 0.005mm. Steel Lathe Chucks can be mounted on industrial lathes where workpiece weights can be elevated to 200kg. In addition, they allow for interrupted cutting operations and bear the weight of cast iron.
