Chuck Clamps Ultra-Small End Mills without Reduction Sleeve

Appears in Print as: 'Chuck Clamps Endmills without Reduction Sleeve'

Big Kaiser’s super slim type of hydraulic chucks (HDC) for HSK-E25 machine spindles are toolholders that can clamp ultra-small end mills and drills directly, without needing a reduction sleeve.

Edited by Bart Bishop

Former Assistant Editor, Production Machining

Big Kaiser’s super slim type of hydraulic chucks (HDC) for HSK-E25 machine spindles are toolholders for precision finishing processes in confined areas with drills, reamers, ball mills, end mills, diamond reamers and grinding tools. Cutting tools with shank diameters of 3 or 4 mm can be clamped directly and are suited for high-speed micromachining applications in the automotive, aerospace, medical, die and electronics industries, the company says.

The super slim HDC can be clamped and unclamped with a single wrench. According to the company, these chucks can clamp ultra-small end mills and drills directly, without needing a reduction sleeve.

The external body diameter of the chuck nose is 0.551” (14 mm), and a gauge length of 1.575” (40 mm). Each tool is precision balanced for speeds up to 60,000 rpm and runout accuracy of less than 3 microns (0.00012”) at 5×D.