Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 55mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke55 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40
The AirTAC SAIJ80X55-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 55mm travel back by up to 40mm. This creates a highly versatile 15-55mm usable stroke window, ideal for dialing in exact end-positions during commissioning without adding external stops. It delivers a robust 3518N push force at 0.7MPa and operates at speeds of 30-800mm/s.
This variant is built with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 55 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×55 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40 Is Used
Machine Changeover
Dial in the 15-55mm travel window rapidly during product size transitions to set new end-stops without changing the cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning using the rear screw, avoiding the need for external stopper blocks.
Short-Stroke Pressing
Apply up to 4523N of push force at 0.9MPa for short-stroke pressing or holding operations that require exact positioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40 the Right Cylinder?
Choose this 80mm bore cylinder when a project requires substantial thrust—3518N push at 0.7MPa—combined with a short, highly adjustable travel range. If you need slightly less force, stepping down to a 63mm bore yields 2182N push at 0.7MPa. The SAIJ80X55-40 is selected over a fixed SAI cylinder when a machine requires frequent product changeovers or precise end-stop tuning without swapping hardware. For load-holding without live air, consider the SAIL or BSAI series instead of relying on the rear stopper. To replace an ISO 15552 cylinder, match the 80mm bore, 55mm stroke, 40mm adjustment, PT G3/8 port, and mounting style.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-40 FAQ
At 0.7MPa operating pressure, the SAIJ80X55-40 provides 3518N of push force and 2268N of pull force. At 0.9MPa, the push force increases to 4523N.
The rear adjuster screw lets you shorten the 55mm nominal stroke by up to 40mm, providing a usable travel window of 15-55mm. It acts as a mechanical stop to tune the end position, but it does not lock the load without continuous air pressure.
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