Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50S 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 SAIJ80AX300-50S
The AirTAC SAIJ80X300-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa. The integrated SUS420J2 stainless steel rod provides robust corrosion resistance, while the built-in magnet enables direct position sensing with CMSE reed and DMSE electronic switches.
This model features a 300 mm nominal stroke that can be dialed back by up to 50 mm, creating a precise 250-300 mm usable travel window. This built-in adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning; it is not a lock, so the cylinder cannot hold a load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50S |
|---|---|
| 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 SAIJ80AX300-50S
| 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 SAIJ80AX300-50S Is Used
Product Changeover
Dial in the exact 250-300 mm retract distance on a packaging line without physically swapping cylinders or adding external mechanical stops.
End-Stop Calibration
Fine-tune the final end position during machine commissioning to achieve precise pressing or locating accuracy.
Variable Positioning
Adapt the stroke window on the fly for automated assembly lines handling parts of slightly varying dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50S the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than a 63 mm bore (which provides 1559 N push at 0.5 MPa) but does not warrant the size and air consumption of a 100 mm bore. An adjustable stroke is ideal for machines that undergo frequent product changeovers, allowing you to set a new variable end-stop without swapping the cylinder or adding external stops. If you need true fail-safe load holding without continuous air pressure, consider the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 300 mm stroke, 50 mm adjustment range, PT tapered port threads, and the -S magnet option. Because this unit features a 300 mm stroke, the 25 mm rod diameter and M20x1.5 rod thread will carry moderate side loads, but an external guide rail is recommended for long unsupported loads to prevent premature seal wear. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ80AX300-50S FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N of push force at 0.9 MPa.
The rear adjuster screw lets you shorten the 300 mm nominal stroke by up to 50 mm, providing a usable travel window of 250-300 mm. The adjuster functions only as a travel stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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