Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40
The AirTAC SAIJ80X40-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod and PT tapered ports. Because the 40 mm nominal stroke matches the 40 mm adjustment code, operators can dial the effective travel down to a zero-mm minimum, creating a highly precise 0-40 mm usable window for exact end-position tuning.
This adjustable stopper allows fine-tuning at commissioning without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80AX40-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80AX40-40 Is Used
Precision End-Stop Tuning
Dial in the exact 0-40 mm travel window during machine commissioning to perfect part seating without machining new spacer blocks.
Rapid Product Changeover
Quickly adjust the rear stopper screw on the line to accommodate varying package sizes or material thicknesses on the fly.
Heavy-Duty Clamping
Leverage the 2513N push force at 0.5 MPa to secure heavy workpieces, using the adjustable stroke to prevent over-travel damage.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40 the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial thrust—such as the 2513N push or 2268N pull at 0.5 MPa—but demands variable end-stops for product changeovers. If you need less force, stepping down to a 63 mm bore yields 1559N push force; if you require more, a 100 mm bore provides 3927N. The 25 mm rod and M20x1.5 thread handle high side loads well, though even short strokes perform best with proper external guiding.
Choose the SAIJ adjustable format over a fixed SAI cylinder when machine setups require frequent physical repositioning of the end-stop. For a drop-in ISO 15552 replacement, match the 80 mm bore, 40 mm stroke, -40 adjustment, PT ports, and desired mounting hardware. Since no -S magnet is specified, position sensing requires external or custom solutions rather than AirTAC CMSE or DMSE switches.
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 SAIJ80AX40-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to trim the effective travel anywhere within a 0-40 mm window. It functions as a mechanical stop to decelerate the piston, but it is not a lock and will not hold the load without continuous air pressure.
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