Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20S
The AirTAC SAIJ80X300-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 280 to 300 mm, letting you dial back the nominal 300 mm stroke by up to 20 mm during commissioning. In the 80 mm bore class, it delivers 3518 N of push force at 0.7 MPa. This variant features a SUS420J2 stainless steel rod, PT tapered ports, and an integrated magnet for position sensing.
Because the stroke is 300 mm, the 25 mm rod and M20x1.5 thread should be paired with an external guide to handle side loads. The rear adjuster acts purely as a mechanical stop for end-position tuning; it does not hold the load without live air pressure. For load-holding requirements without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80AX300-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80AX300-20S Is Used
Variable End-Position Tuning
Dial in the exact 280 to 300 mm travel needed for precision manufacturing without swapping out the entire cylinder.
Product Changeover
Quickly adjust the retract stop to accommodate different package sizes on a conveyor line during production transitions.
Machine Setup Calibration
Fine-tune the end-of-stroke position during initial commissioning to prevent mechanical crashes and optimize cycle timing.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-20S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI cylinder when you need variable end stops for product changeovers or fine-tuning at machine setup without adding external stops. If you need less force, stepping down to a 63 mm bore yields 2182 N at 0.7 MPa. If your application requires more thrust, a 100 mm bore provides 5497 N.
This SAIJ80X300-20-S is dimensionally interchangeable per ISO 15552. It uses PT tapered ports and supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The built-in magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors. Operating speed is 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 SAIJ80AX300-20S FAQ
The rear adjuster lets you shorten the effective travel from 300 mm down to 280 mm. It functions as a mechanical stop to fine-tune the end position; it is not a lock and will not hold a load without live air pressure.
At 0.7 MPa, the SAIJ80X300-20-S provides a push force of 3518 N and a pull force of 2268 N. It can deliver a maximum push force of 4523 N at 0.9 MPa.
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