Cylinder Standard Features
BHC™ (Black Hard Coating) on the cylinder bodies helps prevent scoring and scratching. After years of use, cylinder removal is easier because the BHC™ corrosion resistance is better than black oxide or chrome plating.
Proprietary seal designs reduce leakage and increase seal life for longer lasting, dependable cylinders.
Threaded models use positionable, SAE 4 fluid ports.
Manifold models supplied with gasket to seal against the cavity bottom.
Hardened chrome alloy steel pistons won't "mushroom" even when used without grippers.
Special wipers keep chips and contaminants out.
Positive piston stop shoulder keeps the spring from "bottoming out" guarding against premature spring failure which can plague other cylinder brands.
Frequently Asked Questions
Why use them?
They are the most common and least costly form of hydraulic clamping available. They can be sized adequately to allow you to clamp across or against cutter forces. However, we always recommend that cutter forces be transmitted into fixed stops.
Why are these cylinders more expensive than "standard industrial grade"?
Standard industrial grade cylinders are typically made with cylinders and rods cut to length and made from many parts. Clamping cylinders typically use a one piece piston and one piece body. The grade of materials, seals and finishes are higher due to the long life and frequency of use required. We strive to produce the finest quality cylinders for the specialty clamping industry. We welcome any head to head run-off. Compare for yourself and see the difference in quality.
What are the intended applications of cylinders? What should I avoid?
Clamping cylinders are intended for pushing up against a part and holding it in place. They are not intended for use in power cylinder applications where punching, bending or forming are performed. The special seals used in clamps are not designed to lubricate well in power applications, nor are the cylinders cushioned against "break through" forces. Questions about your application? Call us.
I need custom end effector. What do I need to be aware of in designing it?
Most of the required dimensional information is located in the dimensions table for each individual product. Be aware that single acting cylinders are not designed to carry or retract heavy weights. Their threads are primarily intended for installation of contact points. Double acting cylinders ensure retraction of properly designed special end effectors. If you must use single acting, contact us in the design phases to be sure your cylinder will return.
How does plumbing affect flow on my fixture?
A good example to help you better understand this is to compare it with a freeway system with 25 on ramps. Now put a continuous flow of traffic on the ramps and freeway. Finally, block all but one outlet lane. Just as all the vehicles must compete for that lane, all cylinders are competing for the single outlet on your fixture. Divide your circuit into branches, feed each from a manifold, be sure that your main return line is adequately sized, increase flow as much as possible, by reducing restrictions. If a series of tees and elbows is used to feed an entire fixture, expect flow problems. Finally, be sure that your fixture is properly bled of all air. To achieve predictable clamp and unclamp times, we recommend double acting clamps.
How do I use my hollow cylinder to draw a bolt that runs my mechanism?
This will involve mounting your hollow cylinder on the side of your fixture plate opposite where it is to draw the bolt. Using the bottom mounting holes draw it back against the fixture. Run the bolt through the fixture and cylinder. When the cylinder extends, it will draw the bolt.
Note: For maximum spring life, do not regularly run single acting cylinders to the end of the stroke.
Threaded Mini Cylinder
Manifold Block Cylinder
Easy Mount Cartridge