BIG KAISER introduced Hydraulic Chucks for Swiss lathes in 2018, the first improvement to the technology in more than 30 years. This year, the program has expanded to include inch-size Standard Type chucks, as well as new F Type and R Type chucks.
Standard Type Hydraulic Chucks with tool-side clamping are now available in inch sizes with the clamping range of ø1/8", 3/16" and 1/4".
The new F Type's single wrench enables easy cutting tool changes on the tool post. The easy-access rear clamping design is ideal for front tool post. Clamping from the opposite side of the cutting tool and optimum-length design improves overall ease of use. The F Type is available in a clamping range of ø3-10mm and coolant delivery is possible with an Rc(PT)1/8" screw.
The new R Type eliminates interference at both the upper or lower tool post positions with a unique block design and tightening at an offset position in the tool side. The R Type is available in a clamping range of ø3-10mm 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. 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 22mm straight shank.
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