BIG Kaiser Precision Tooling Inc. has introduced a new, high-precision hydraulic chuck for clamping straight shank tools with diameters ¼" to 1 ¼" and 6mm to 32mm. They are ideal for tools such as drills, reamers, ball mills, endmills and other tools used in processes that require extreme accuracy and a fine surface finish.

"Our customers in the automotive, aerospace and medical fields will love this tool holder for its precision and stability," says Jack Burley, BIG Kaiser vice president of sales and engineering. "What's more, cutting tools can be easily clamped and unclamped with just one wrench."

The hydraulic chucks are pre-balanced to within 15 gr.mm for vibration-free machining at speeds of up to 20,000 RPM. Precision and rigidity are improved due to an integral sleeve construction, dual-oil pressure points and a short projection length. They feature runout accuracy guaranteed to less than .00012" (3µm) at 4xD and repeatability less than .00006" (1.5µm), shown to improve the surface finish of workpieces and extend tool life. They are available for BIG-PLUS (CAT and BT), HSK and CAPTO interfaces.