SKU JGKPDBB4GKZ8UGQ1GV0-S506
8 in. 4-Jaw Lathe Chuck with Backing Plate. Our lathe chuck with backing plate achieves faster, steadier machine connection. Built from premium HT300 cast iron, jaw hardness ≥53 HRC for exceptional durability. The self-centering design ensures high-precision clamping ranging from 0.16 in. to 7.87 in. with 2.56 in. I.D and 8 in. O.D.