Manufacturing Process:Rolled Thread Product name:vacuum table rotary ball screw for cnc machine Type:ball screw Material:Gcr15, Gcr15SiMn, Chrome steel, stainless steel, alloy steel Length:0-6000mm, can be customized Precision:C5, C7 Prepressure:P2 (common prepressure) Hardness:59-63 HRC Tolerance:0.002-0.005mm Thread:usually right thread Show More