特点：l      本产品适用于具有一定批量的各种正方形、八菱形零件的加工，可自动定心，快速加紧。型号尺寸重量（lbs)孔周凹槽孔径厚度爪高LCF4J-3R3162.592.16.861.65.55LCF4J-6R6235-23/325-1/81-1/22-9/161-3/16LCF4J-8R8384-9/674-15/161-15/163"1-3/8LCF4J-10R10564-3/43-15/162-1/23-1/41-3/8LCF4J-12R12956-1/25-1/23-3/43-1/21-3/4LCF4J-16R161658-15/167-1/83-1/23-3/42"LCF4J-20R202259-1/47-1/86-1/44"2-1/8 Flat Back Lathe Chucks4-Jaw Independent Flat Back ChucksMedium Duty Cast Body with Plain BacksThe chuck body is made of cast iron. The reversible jaws and operation screw are made of high quality carbon steel. Jaws are hardened and precision ground. One set of jaws, one set of setting screws and one piece of hexagon wrench are attached to each set of the chuck.