CYLINDER OPTIONS
FAIL SAFE • SPRING RETURN – SINGLE ACTING.
Available in all models except Types “ET” & “ETD”. MAXIMUM STROKE AVAILABLE IS 10”. Cylinders can be supplied with the rods either normally retracted or extended by the spring. On SRF models, Front Head Rod
Seals are normally not provided, but can be if requested.
SPECIFY:
| SRF | INDICATES SPRING IN FRONT END (AIR PUSH) ROD NORMALLY RETRACTED |
| SRR | INDICATES SPRING IN REAR END (AIR PULL) ROD NORMALLY EXTENDED |
| SRFW | INDICATES OPTIONAL STRONGER SPRING (For heavy-duty applications only.) |
| SRRW | INDICATES OPTIONAL STRONGER SPRING (For heavy-duty applications only.) |
APPROXIMATE SPRING FORCES IN POUNDS
*NOTE Applies to SRF and SRFW models only
| LAST 1/2 INCH OF STROKE IS EFFECTIVELY CUSHIONED TO REDUCE SHOCK & NOISE. FULL REVERSE FLOW PROVIDED. CYLINDER LENGTH NOT AFFECTED. |
CUSHION ADJUSTING SCREW LOCATIONS
FC (FRONT CUSHION), RC (REAR CUSHION), BC (CUSHION BOTH ENDS)
NOTES:
1) Dim. B cushion screw shown fully closed.
2) Available on Spring Return Cylinders. Opposite the spring side only.
3) Non-Standard Cushion Adjusting Screw locations available at slight additional cost.
AVAILABILITY AND TYPES
NOTES:
| ADJ = ADJUSTABLE CUSHION AVAILABLE FX = FIXED CUSHION ONLY AVAILABLE NA = CUSHION NOT AVAILABLE |
DOUBLE ROD PACKING
| SPECIFY: | DRP Two sets of rod seals in “A” Type cylinders – except 7/8” and 1-1/8” bore sizes. |
FAIL SAFE
| SPECIFY: | FS Spring installed in front cylinder to retract rod should there be an air failure. Dimensions are those of a Single Acting Cylinder. |
HIGH TEMPERATURE SEALS
| SPECIFY: | HTP Fluorocarbon compound (Viton) seals, temperature range of +10°F to +350°F . |
HOLLOW RODS
| SPECIFY: | M Hole thru rod available up to 12” stroke. |
NO TANG
| SPECIFY: | NT Cylinders available without Tang section (covered by dimension “E” minus “N”) |
OVERSIZED ROD
| SPECIFY: | OS Larger diameter rod for column loading. Not available on Type ETD 1-1/2” bore. |
LOW FRICTION CYLINDER
| SPECIFY: | LF Available in “A” Type cylinders only. For extremely low friction at medium to high pressure. |
MAGNETIC PISTON
| SPECIFY: | RM To signal Hall Effect or Reed switches. Available on Type “A”, “E” & SM 1-1/8″ cylinders. |
ROD WIPER
| SPECIFY: | WR Teflon wiper replaces the standard leather back-up ring in Types “A” & “E” cylinders only. |
POLYURETHANE BUMPERS
| SPECIFY: |
PUBF PUBR PUBB For use on high speed Cylinder applications to reduce shock and noise where standard cushions cannot be used. Made of 1/2” thick Polyurethane and press fit between the head and piston. |
PUBF BUMPER INSTALLED IN FRONT • PUBR BUMPER INSTALLED IN REAR
PUBB BUMPER INSTALLED BOTH ENDS
Available on all Cylinders and Bore sizes except Spring Return Cylinders and Cylinders
having Accessory Pins, Bleeder Valves or Cushions. Adds 1/2” of length for each bumper.
HALL EFFECT SWITCHES (CSA “NRTL/C” Listed):
ALLENAIR Hall Effect switches are designed to be used with our type “A” & “E” 1-1/8” thru 4” bore cylinders. The cylinders must be ordered with the “RM” option (adds 1” O.A.L. to “A” type). All switches have an LED indicator light, nine (9) foot leads, a mounting bracket P/N RMB2 and an operating temperature range of – 22°F to +176°F.
REED SWITCHES (CSA “NRTL/C” Listed)
ALLENAIR Reed switches are designed to be used with our “A” &“E” type 1-1/8” thru 4” bore cylinders. Cylinders must be ordered with the “RM” option (adds 1” O.A.L. to “A” type).
All switches have nine (9) foot hook up cable. Operating temperature range is -22°F to +176°F. Models R02, R04 and R05 have an LED indicator light. Models R02, R03, R04 and R05 have MOV surge suppression.
Order mounting strap based on cylinder bore size as shown below.
Model R05 is supplied with a universal mounting bracket and strap covering
STANDARD OPTIONS FOR ALL BORE SIZES EXCEPT WHERE NOTED, AVAILABLE AT EXTRA COST.
| REED SWITCHES | |
Models R01 – R04 | Model R05 |
| MODIFICATIONS | |
| RODS: Non-Standard Rod Extensions (“H” Dim.) | SPECIFY Length Required |
To determine port and option locations, we will always look at the front of the cylinder (Rod Side) with the tail section in the vertical plane, Square head units will be sitting on the base of the heads, and No Tail units will have the ports on the top at position #1. (Position #1 is standard) Position #9 is in the center of the rear head.
There are eight possible positions for ports and options, all others are special and will be treated as special units.
EXAMPLE: A 1-1/2 X 6 BC3 FP7
BC3 = Cushions Front & Rear at Position 3
FP7 = Front Port at Position 7
Rear Port remains at standard position.
| HEADS: Non-Standard Port Location(s) NOTE: The Port Sizes shownin the dimension drawings are the largest available. |  |
NOT ALL CODES ARE LISTED – ONLY THE MOST COMMON
| CODE | DESCRIPTION |
B | Sp. “H” Dimension |
MATERIALS: Special seal compounds are available for a wide range of fluid media and environments. Tubes, Heads, Pistons and Rods can be supplied plated, hardcoated or in other materials. Please consult the factory for special requirements, stating quantity required.
SPECIAL DESIGNS: Many times Allenair is able to change the standard configuration of our Cylinders to meet Customer’s special requirements. A print from the Customer is needed so we can evaluate and properly quote such specials.
PLEASE CONSULT FACTORY ON THE ABOVE SPECIALS STATING QUANTITIES REQUIRED.
