– An Alkon Company
Cylinders
Allenair is your single source for dependable, high-quality hydraulic and pneumatic cylinders for industrial applications. When your reputation is on the line, cutting corners is out of the question. Allenair cylinders are built in the USA and adhere to the highest level of excellence and reliability. Every cylinder manufactured is durable and built to last, ultimately saving you time and money.
Product Lineup
Double Acting Cylinders
7/8″ – 5″ Bores
Standard Strokes Up to 20″ & Special Order Up to 130″
This is Allenair's largest and most configurable design. Engineered and built to outlast the life of your equipment, the snap ring closure design allows for rebuilding to further extend the life of your cylinder. You can choose a Type A, C, or E cylinder to perfectly fit your application. Allenair's large range of bore diameters, rod sizes, and mounting configurations combined with high-quality materials is a winning combination.
Double Ended: Types AD, CD & ED
Cylinders are constructed with a common single rod, which protrudes from both ends. As one end retracts, the other extends.
Back-to-Back: Types ABB, CBB & EBB
Units consist of two separate single ended Cylinders, joined together by a common rear head. Their strokes can be either identical or different. By fastening one rod end to a fixed object, these units can perform as 3 and 4 position Cylinders.
Integral Rear Swivel: Types AN, CN & EN
Cylinders are constructed with a female clevis end, including clevis pin.
Integral Square Head: Types AS, CS, ES, CSD & ESD
Units incorporate the use of square heads, thus eliminating the need for separate Foot Mounts.
Three Position: Types AP, CP & EP Single Ended, Types APD, CPD & EPD Double Ended
Cylinders feature two separate piston rod assemblies which provide three definite and positive positions. Any combination of first stroke and total stroke is available. Both rods fully retracted are first position.
Tandem: Types ET Single Ended, ETD Double Ended
The basic construction of these Cylinders is identical to Type "E" and feature two Cylinders in tandem having two pistons mounted on one common rod. The output force of a single Cylinder can be almost doubled using a Tandem Cylinder and piping both rear ports together and both front ports together, which will apply the working pressure to both Cylinders at the same time. This is particularly useful when space limitations preclude the use of large bore Cylinders, and the force required is greater than that supplied by smaller bore units.
Non-Rotating: Types AR, ARD
Types "AR" and "ARD" cylinders are built with two (2) guide rods extending between cylinder heads and thru piston guide rod bearings. This prevents piston rod rotation completely. Service life of these cylinders is excellent, in no way different from our conventional construction. All other construction features are the same as our standard cylinders.
Small Bore Cylinders
½", ¾", and 1-1/8" Diameter Bores
Strokes up to 14"
These small bore cylinders come with brass tubes that are precision honed with a cross-hatch lubricant retaining pattern. The front and rear heads are precision machined and threaded. Seals can easily be replaced if necessary to prolong the life of the cylinder. These can be used for pneumatic and hydraulic pressures up to 150 psi.
Type SM Single Ended
An all purpose light duty pneumatic Cylinder designed for nose mounting with rear face porting. 1-1/8″ Bore is also available in 300 Series Stainless Steel, TYPE SSSM.
Type SMD Double Ended
Similar to above except there is a single rod which protrudes from both ends and as one end retracts the other extends. 1-1/8″ Bore is also available in 300 Series Stainless Steel, TYPE SSSMD. See catalog SS200.
Type SMT Single Ended
Cylinder is designed for Clevis and various other universal mountings.
Type SP Single Ended
Similar to Type "SM" except a square front head is used, thereby eliminating the need for a separate Foot Mount.
Type SPD Double Ended
Similar to Type "SMD" except square heads have been incorporated, eliminating the need for separate Foot Mounts.
Model SSSM (All Stainless Steel Small Bore Cylinders)
Available in 1-1/8″ (28mm) bore only.
Single And Double Acting Valve-In-Head® Cylinders
Strokes up to 130″
Valve-in-Head® cylinders are unique, compact, self-contained units that combine both cylinder and valve into one complete module. This provides the highest level of performance with the quickest valve and cylinder response time and best-in-class flow. Eliminate possible failure points by reducing the number of fittings and tube connections. These cylinders will save on space, time, and cost. The robust design will keep your machine running, maximizing uptime and profits.
Type AV
Coupled with one of a wide variety of 4-way valves, these all purpose units are used for most pneumatic applications.
Type CV
Cylinders are constructed using low friction
Type EV
Cylinders are constructed using Block-Vee Seals and include a heavy-duty wear strip on the piston and double rod seals in the front head. Coupled with one of a wide variety of 4-way Valves, these Cylinders are recommended for heavy-duty applications and where side load conditions are present.
Type EVT
Cylinders feature two Cylinders in tandem having two pistons mounted on one common rod.
Single Solenoid: Model SVS
These models incorporate a 4-way Single Solenoid Pilot Valve, air return. A maintained electrical contact is required to move the rods its full stroke. Breaking the electrical contact returns the rod to its original position.
Single Solenoid: Model SVEVA
These models incorporate a 4-way Single Solenoid Double Bleed Pilot Valve. A momentary (NOT continuous) electrical contact is required to move the rod its full stroke. A Bleeder Valve, such as the Allenair BV100 or BV-1/8 (to be ordered separately), must be connected to the spool cap opposite the solenoid.
Single Solenoid Automatic Return: Model VER
Models incorporate a 4-way Single Solenoid Double Bleed Pilot Valve. A momentary (NOT continuous) electrical contact is required to move the rod its full stroke. Upon reaching its FULL stroke, the rod will automatically return to its original position.
Double Solenoid: Model SDS
Models incorporate a 4-way Double Solenoid Pressure Pilot Valve. A momentary or maintained electrical contact applied to one solenoid will move the rod its full stroke. The rod will remain there under pressure until the other solenoid is energized, which will cause the rod to return to its original position.
Single Pilot: Model APSR
Models incorporate a 4-way Single Pressure Pilot Valve. A continuous pilot pressure applied to "IN" side of valve will move rod its full stroke. When the pilot pressure is released, the rod will return to its original position. Pilot pressure is normally supplied through an optional 3-way N.C. Valve.
Single Pilot Automatic Return: Model VAR
Models incorporate a 4-way Double Bleed Pilot Valve. A momentary (NOT continuous) actuation of Bleeder Valve is required to move the rod its full stroke. Upon reaching its FULL stroke, the rod will automatically return to its original position.
Double Pilot: Model AP
This model incorporates a 4-way Double Pressure Pilot Valve. A momentary or maintained pilot pressure applied to one side of the valve will move the rod its full stroke. The rod will remain in that position under pressure until a pilot pressure is applied to the other side, which will cause the rod to return to its original position.
Double Pilot: Model SVA
This model incorporates a 4-way Double Bleed Pilot Valve. A Bleeder Valve, such as the Allenair BV100 or BV-1/8 (to be ordered separately) must be connected to each spool cap. Depressing one Bleeder Valve momentarily will move the rod its full stroke. Depressing the other Bleeder Valve momentarily will return the rod to its original position.
Manually Operated: Model VH
This model requires manual operation of the lever to both extend and retract the rod.
Manually Operated: Model VHSRR
This model is lever operated to extend the normally retracted rod. The valve is equipped with a built-in air return which automatically retracts the rod when lever is released.
Manually Operated: Model VHSRE
This model is lever operated to retract the normally extended rod. The valve is equipped with a built-in air return which automatically extends the rod when lever is released.
Automatic Reciprocating: Model VCR
This model incorporates a 4-way Double Bleed Pilot Valve. By means of Built-in Bleeder Valves and internal Cam Bosses, this unit will automatically reciprocate as soon as air pressure is applied. Because of this, it is recommended that a shut-off valve be mounted in the inlet line.
All Stainless Steel Cylinders
Bore Sizes 7/8″ – 4″
Strokes up to 130″
These threaded construction, all stainless steel cylinders are perfect for the food processing industry and any other wash-down required applications. This crevice-free design ensures that all catch points for contamination have been eliminated. They will stand up to repetitive power and chemical wash downs. These can also be rebuilt to help extend the life of the cylinder.
Single Ended: Types SSTA & SSTE
Double Ended: Types SSTAD & SSTED
Integral Rear Swivel: Types SSTAN & SSTEN
Back-to-Back: Types SSTABB & SSTEBB
Three Position Single Ended: Types SSTAP & SSTEP
Three Position Double Ended: Types SSTAPD & SSTEPD
Tandem Single Ended: Type ET
Tandem Double Ended: Type ETD
Position Feedback Cylinders
Available for pneumatic (TDP) and hydraulic (TDH) service. The TD Option gives you an internal Linear Resistive Transducer (LRT) for extremely accurate piston position sensing. It is ideal for applications where magnetic Reed and Hall effect switches are not acceptable. The TD Option is the perfect solution for applications where variations in cylinder stroke and speed are required or where an application calls for real time position monitoring. Offered in bore sizes from 1-1/8″ to 4″ and strokes up to 18″. Cylinder comes standard with an IP 67 rated 8mm 3 pin male cable connector.
Cyl-Check® Cylinders
Standard Strokes 2-1/2″, 5″, 6″, 10″, 15″ & 20″
Special Strokes Available
When you want the precision control of a hydraulic cylinder, but don't want to mess with the pump, accumulator, and hoses, consider Cyl-Check® cylinders. These cylinders are unique in combining the flexibility of a pneumatic cylinder with the control of a hydraulic cylinder in one parallel or tandem mount package. These self-contained, maintenance-free hydraulic cylinders provide a full range of flow control, anywhere from 1 in/min up to 600 in/min. This, combined with a standard pneumatic cylinder, provides a plug and play unit that only requires standard pneumatic controls and connections. Add a Stop Check to gain the ability to stop the cylinder dead at any or multiple points along the travel, great as an E-stop. Skip Check allows for rapid movement in areas where precision control isn't needed, while still providing the dialed-in hydraulic control where it matters most.
- 3000 pounds capacity maximum thrust load.
- Feed Control available for Forward, Rearward or Both Directions.
- Feed Rate infinitely variable.
- Optional Stop and Skip Check features.
- Optional Threaded Rod Extensions available for rapid traverse.
- Complete mounting versatility.
- Precision honed brass body, provides longer seal life.
- Wear Strip on piston and extra long bearing in front head for prolonged life.
- Viton Seals to insure long life when heat build-up occurs.
Both Directions Feed Parallel Mounting: Type CHB
Both Directions Feed Tandem Mounting: Type CHTB
These units provide fully independent control in both forward and rearward directions.
Forward Direction Feed Parallel Mounting: Type CHF
Forward Direction Feed Tandem Mounting: Type CHTF
These units provide control in forward direction only, with unrestricted movement when retracting.
Rearward Direction Feed Parallel Mounting: Type CHR
Rearward Direction Feed Tandem Mounting: Type CHTR
These units provide control in rearward direction only, with unrestricted movement when extending.
Air Clamps
Double and Single Acting
1-1/8″ & 2″ Bore Sizes
Allenair Air Clamps are rugged, economical units with versatile mounting for clamping, pressing, staking, stamping, bending and positioning. Available in Double and Single Acting.
High Tensile Die Cast or Aluminum Bodies, with ground and polished 416 Stainless Steel Piston Rods. The Precision bored bodies add longer life and dependability to the BUNA-N Seals. All 1-1/8″ Bore Clamps have sturdy Bronze Rod Bearings, except the AC-1×1, which utilizes the head itself for its bearing. The 2″ bore Clamps have low friction, long life Nylon Rod Bearings. 150 P.S.I,
maximum pressure. 250°F maximum temperature.
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