There are many applications where cylinders are exposed to extreme heat due to environmental conditions. Whether your cylinder is near a bakery oven or hanging above a crucible of molten metal knowing which options are available to handle the heat becomes top priority.
In 1962, E.F. Houghton Co. published A Handbook On Hydraulic and Pneumatic Packings for the fluid power industry. In the opening chapter there is an illustration of a “typical animal hide” which depicted the best parts of the hide that could be fabricated into leather “U” cups, “V” rings, and gaskets to seal fluid power cylinders.
When installed with proper alignment, fluid power cylinders will provide the smooth trouble free performance for which they were intended. Unfortunately, perfect alignment is extremely difficult, if not next to impossible to achieve. During cylinder operation, any misalignment can impose an eccentric force on the piston rod known as “side loading”.
You know that sinking feeling when you take the first bite of a much needed lunch, the phone rings and you answer to hear the words "We have a problem; it’s a new installation and the tube seals have blown!" With thoughts of catching a snack later in the day, you attend the scene of the crime...
Any piece of equipment operates best when it is used regularly within normal guidelines.
Take for example a classic car; it ran perfectly when you put it away last fall, but something happened during the long winter.
We won’t say that all mounts can be combined; as clearly there are some features which would just interfere with each other. For instance, a Front Head (FHF) and a Side Lug (SL) cannot coexist on the same end of a cylinder. What is possible, however, is to have an FHF (Head) mount combined with a Side Lug at the Cap; if that serves a useful design purpose for you.
Ever thought that you have had to go a long way around a design problem to mount a particular component? Here's a hint that might possibly be a ‘quick-fix’ and a help if you're finding yourself in a similar situation.
Sheffer fits tie rod supports to long stroke cylinders to stop the tie rods from twanging like an out of tune banjo - and the design feature does a wonderful job of achieving that aim.
When charged with the notorious "beating your head against a wall", and at the very least unpleasant, task of choosing a cylinder supplier -- one can quickly become disenchanted with all of the industry hype and mumbo jumbo.
From the mammoth sized companies, in which you can get lost and slip through the cracks, to the miniature sized companies that don't offer competitive quality or the same kinds of guarantees as the "big guys" -- the options seem pretty limited.
Most cylinders are fixed at one point along their length. Although there is guidance and best practices associated with all of the mounting types --our thoughts go back to the times we have seen side lug cylinders used incorrectly – in one case; to the extent that the tube to cap joint was ruined.