Enerpac specialty workholding cylinders are designed for manufacturing and fixture applications that require capabilities beyond conventional tie rod, threaded body, block, or manifold cylinders. These specialized cylinders provide solutions for applications requiring positive mechanical clamping, compact push-cylinder configurations, or mechanically maintained workholding force.
This collection includes Enerpac MRS Series positive-clamping hydraulic cylinders along with Collet-Lok push cylinders for demanding machining, production, assembly, and fixture applications.
Enerpac Specialty Workholding Cylinder Types
MRS Series Positive-Clamping Cylinders
Enerpac MRS Series Cylinders are compact positive-clamping hydraulic cylinders designed for workholding applications where controlled clamping force must be applied within a very short operating stroke. Their compact configuration makes them useful in production fixtures where installation space is limited and repeatable clamping is required.
MRS Series models are available in several capacities, allowing the cylinder to be matched to the holding force required by the fixture or manufacturing process.
Collet-Lok Push Cylinders
Enerpac Collet-Lok push cylinders combine hydraulic actuation with a mechanical locking system. Hydraulic pressure moves the cylinder into its working position, while the Collet-Lok mechanism mechanically maintains the applied force after the cylinder has been locked.
This capability can be valuable in workholding systems where a component must remain securely positioned without relying on continuous hydraulic pressure throughout the machining or production cycle.
Why Use a Specialty Workholding Cylinder?
Standard hydraulic cylinders work well for many clamping and positioning applications, but some fixtures require additional capabilities. A specialty cylinder may be appropriate when the application requires an extremely short clamping stroke, compact installation dimensions, mechanical load retention, or a cylinder configuration designed specifically around the fixture.
These characteristics can help engineers and fixture designers create workholding systems that are more compact, repeatable, and better suited to the manufacturing process.
Choosing a Specialty Workholding Cylinder
Start with the required clamping or pushing force and the amount of movement needed to engage the workpiece. Then evaluate available installation space, mounting dimensions, hydraulic connections, operating pressure, and how the cylinder will interact with the fixture.
For applications where maintaining force without continuous hydraulic pressure is important, a Collet-Lok cylinder may provide an appropriate solution. For compact applications requiring positive clamping over a short stroke, compare the available MRS Series models.
Because specialty workholding cylinders are often closely integrated with production tooling, always verify the complete dimensional and hydraulic specifications before finalizing the fixture design.
Other Enerpac Workholding Cylinder Options
For automated clamping where the clamp arm must move away from the workpiece during loading and unloading, browse our Enerpac Hydraulic Swing Clamp Cylinders. For compact fixture-integrated cylinders, see our Enerpac Block & Manifold Hydraulic Cylinders or Enerpac Threaded Body Hydraulic Cylinders.
You can also return to our Enerpac Hydraulic Workholding Cylinders collection to compare all available workholding cylinder types.