MMK Matsumoto HA8-10-66 10 3 Jaw Hydraulic Power Chuck A2-8 Mount. Jaw stroke - 8 Dia.
Workpiece diameter - f228.6 Max - f41.6 Min. Draw pull - 36.9Kn.
Applicable cylinder - ZKP170/69-25 - M75 x 1.5 Draw Thread. Used On A Hitachi Seiki CA23 Lathe. Cannot see what you are after...