Shrink-fit and hydraulic holders are especially useful in low clearance, tight work envelopes because of their relatively slim design. This has made them effective in moldmaking applications and more coveted since the widespread adoption of multi-axis machinery. Hydraulic and shrink-fit holders also share a middle-of-the-road gripping strength: about half that of a milling chuck and about double that of collet chucks. These similarities are why we're taking the time to compare the two. When it comes to deciding between one or the other, it's the differences that will guide the choice. So let's dig into some of the fundamental contrasts that may help you decide which holder type is best for you and your work.
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