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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:
  1. Fixed Cushions are INTERNALLY CONSTRUCTED.
  2. Tandem Cylinders Cushions installed on Rear Cylinder Only.
  3. Three Position Cylinders – Rear Cushion of Front Cylinder not available.

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.

NOTES: 1) PNP output is Sourcing 2) NPN output is Sinking All models require a mounting strap purchased as a separate item based on the cylinder bore size.

 

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.

Models R01 – R04 include mounting bracket P/N RMB2. 
Order mounting strap based on cylinder bore size as shown below.


Model R05 is supplied with a universal mounting bracket and strap covering

all bore sizes (1-1/8”thru 4”) P/N RMB1

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.)
Non-Standard Rod Threads (“CC” Dim.)
Non-Standard Rod Thread Length (“J” Dim.)
Female Threads In Rod
No Threads on Rod
Complete Special Rod End
Non-Standard Wrench Flats
Special Rod Material

SPECIFY

Length Required
Size Required
Length Required
Size & Depth Required
No Threads
Print Required
Location & Size
Material Required

STANDARD & OPTIONAL PORT LOCATIONS

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)
Non-Standard Cushion Screw Location(s)
Extra Ports
Non-Standard Hole In Tang

NOTE: The Port Sizes shownin the dimension drawings are the largest available.

LISTED BELOW ARE SPECIAL CODES WE USE WHENEVER A SPECIAL CYLINDER (CS) IS ORDERED.

NOT ALL CODES ARE LISTED – ONLY THE MOST COMMON

 

CODE DESCRIPTION

B
BU
C
CB
CH
CS
D
DRP
EPF
EPR
EPB
F
FS
G
GB
GF
GR
H
HTP
IB
IF
IR
J
J2
K
KR
L
LF
M
NT
Q
RB
RF
RM
RR
RG
U
W
WR

Sp. “H” Dimension
Brass Tube
Sp. “J” Dimension
Sp. “H” & “J” Dimensions
Sp. “H” & “J” For Cyl-Check
Sp. Per Customers Specs.
Sp. “CC” Dimension
Double Rod Packing
Extra port in Front
Extra port in Rear
Extra port Both Ends
Non-standard Port Location
Fail Safe W/Spring In Front
No Rod Threads
No Rod Threads Both Ends
No Rod Threads Front End
No Rod Threads Rear End
Sp. Per Customers Drawing
Hi-Temp. Packings
“AB” Pin Both Ends
“AB” Pin Front End
“AB” Pin Rear End
Special Tail
Flange Mount Tail
Female Thread In R od
Sp. “H” & “J” For K & KR Kits
303 Stainless Steel Rod
Low Friction Cylinder
Hollow Rod
NoTang
Stainless Steel Snap Ring
Bleeder Valve Both Ends
Bleeder Valve Front End
Magnet On Piston
Bleeder Valve Rear End
Sp. “H” For Rod Guide
Steel Tube
Stronger Spring
Rod Wiper

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.

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