The National Fluid Power Association (NFPA) has
established standard port sizes for pneumatic
cylinders to go along with standardized bore sizes.
Cylinder ports are threaded holes that can be
located on any of the four cylinder end cover side locations. The
port contains standard thread dimensions to accept pneumatic
fittings (used to introduce air into the cylinder)
commonly found in industrial applications throughout North America
and elsewhere around the world. A port may be located on any side of the cylinder
head and cap end covers.
Air supply ports may be occasionally be
oversized; however, when this occurs, the cylinder becomes
"Non-NFPA Standard" and is generally not NFPA interchangeable when
compared to other NFPA cylinders. Oversized
Ports are not configurable herein.
When selecting Port Locations for
Double Rod End
Cylinders, please contact Peninsular.
Illustration #1:NPT Ports -
are the most commonly used Air
Supply Ports
The
chart below lists
Standard NPT Port Size
Dimensions as
specified by the National Fluid Power Association (NFPA)
NPT Ports
- Have Tapered Threads
Dimensional Data for
NFPA Standard NPT Air Ports
Illustration #2:
Oversized
NPT Air
Supply Ports
Note: Port Bosses are Required for Oversized Ports
Very few applications may require a larger port
than the stated NFPA standard port size. When oversized ports are ordered,
a “Port Boss” is welded to the cylinder head to accommodate
the larger supply port.
Oversized NPT Port Sizes are available by special request and are
not configurable within this configurator. NPT Oversized Port
dimensions containing bosses are referenced below. When oversized
ports are required, contact Peninsular at Toll Free (800) 526-7968 in the
USA or Canada or at (586) 775-7211. You may also email
us at
sales@peninsularcylinders.com.
Oversized NPT Port shown
with a Port Boss
with chart listing Oversized NPT Port Size Dimensions
Illustration #3:Selecting End Cap Air Supply Port Locations
The purpose of this configurator screen is to
identify the “Head End” (Front End Cap) and "Cap End" (Rear
End
Cap) side locations that require air supply ports. An
air supply port may be located on any one, two, three or four of the four
sides of the square end cover of the cylinder that is not resticted by the cylinder mount. When
selecting the port location, one must always view the cylinder
through the front of the “Head End” (also referred to as the "Rod
End") even when selecting the port location on the "Cap End". The
illustrations below provide an explanation on how to
view the cylinder for making the port location(s) decision.
When selecting Port Locations for
Double Rod End
Cylinders, please contact Peninsular.
End Cap Air Supply Port Location
Charts
End Cap Side Positions
View of a Side Foot Lug Mounting
Style cylinder (MS2) showing both the Front & Rear End Caps with
Air Supply Ports at
Positions #1.
Arrows are pointing to the End
Cap Side Locations
For any cylinder mount, always
view the Cylinder through the Front End Cap when determining
the Air Supply Port location(s) for both the Front and
Rear End Caps.
If you need any assistance please feel free to call us toll free
at (800) 526-7968 in the USA or Canada or at (586) 775-7211. You
may also e-mail us at
sales@peninsularcylinders.com.