Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX40-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-20S
The AirTAC SAIJ80X40-20-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. Because of the 20mm adjustment code on this 40mm nominal stroke, you can dial the effective travel back to anywhere within a 20-40mm window during commissioning. This prevents the need to swap out the entire cylinder when fine-tuning end positions.
This specific configuration includes a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet (-S) is ready for solid-state DMSE or reed CMSE position sensing. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-20S |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-20S
| 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 SAIJ80AX40-20S Is Used
End-Position Tuning
Dial in the exact 20-40mm travel distance during machine commissioning to perfect the clamping or pressing force without machining new hard stops.
Product Changeover
Quickly adjust the rear stopper to accommodate slightly different product heights on a packaging line, reducing downtime between production runs.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-20S the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring a variable end-stop without adding external physical stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an external rod lock or the AirTAC SAIL series. This unit is dimensionally interchangeable with ISO 15552 cylinders, matching the 80mm bore, 40mm stroke, 20mm adjustment, PT ports, and -S magnet specifications. Operating speed ranges from 30-800 mm/s.
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 SAIJ80AX40-20S FAQ
At 0.7 MPa, the push force increases to 3518N.
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective travel from the 40mm nominal stroke down to as little as 20mm. This provides a usable 20-40mm travel window for fine-tuning the end position at commissioning.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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