ISSUE #03

Workholding: Mechanical, Hydraulic or Both?

What is it?
Locating and holding a part in place for machining can be done in a variety of ways. For those just getting started or even those with vast experience in manufacturing, choosing the right method is not always easy. What types of components do I need? How do they work together? How do I know it is going to work?
This and the next chapter of Enerpac University answer these questions and
more as we present an overview of mechanical and hydraulic workholding, and detail a combination of the two that incorporates the most desirable characteristics of both.

Introduction
Workholding is a fundamental task in metalworking. It’s comprised of three distinct steps.
1. Locating (positioning)
2. Supporting
3. Holding (clamping)
Three methods of accomplishing the workholding task are in common use.
1. Mechanical Workholding Components such as bars, springs, nuts, and bolts.
2. Hydraulic Workholding Pneumatic or hydraulic components.
3. Hydraulic/Mechanical: Collet Lok® A unique combination of hydraulic and mechanical components.