Big Kaiser’s Hydraulic Swiss-Type Chucks Enable Faster, Safer Tool Changes

Big Kaiser’s hydraulic chuck line expands with Standard Type, F Type and R Type chucks for Swiss-type lathes which feature tool-side clamping for faster and safer tool changes that eliminate machine downtime and make for easier cutting.

Standard Type hydraulic chucks are available in inch sizes with the clamping range diameter of 1/8", 3/16" and 1/4”.

The F Type’s single wrench enables easy cutting tool changes on the tool post. The easy-access rear clamping design is well suited for the front tool post. Clamping from the opposite side of the cutting tool and optimum-length design improves overall ease of use, the company says. The F Type is available in a clamping range diameter of 3-10 mm and coolant delivery is possible with an Rc(PT)1/8" screw.

The R Type is designed to eliminate interference at both the upper or lower tool post positions with a block design and tightening at an offset position in the tool side. The R Type is available in a clamping range diameter of 3-10 mm and its oil hole drills can be used for coolant delivery when mounted on the upper section.

To minimize machine downtime and provide operator safety, these hydraulic chucks use a simple hex wrench that requires only two to three turns for both clamping and unclamping. Tightening is complete when the clamping screw hits the bottom — controlling tightening torque is not needed. Once a hydraulic chuck is centered, the runout will not vary, even if a cutting tool is changed repeatedly, the company says, and runout of fewer than three microns at four times diameter can be achieved. Hydraulic chucks have a standard pipe thread for coolant-through connection and are available for most Citizen and Star machines with 3/4" or 22 mm straight shank.