Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30S
The AirTAC SAIJ80X280-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa and features a 250-280mm usable travel window, letting you dial back the nominal 280mm stroke by up to 30mm during machine commissioning. The extruded aluminum barrel includes sensor grooves on both sides, and this specific SKU is built with a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance.
Because this is an adjustable-stroke variant, the rear mechanical stopper fine-tunes the retract end-position without requiring you to swap out the entire cylinder or bolt on external stops. The 25mm rod and M20x1.5 rod thread provide excellent structural rigidity, handling higher side loads than smaller bores, though an external guide is still recommended for this 280mm stroke. It carries a PT tapered port thread and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAIJ80AX280-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SAIJ80AX280-30S Is Used
Product Changeovers
Quickly fine-tune the 250-280mm travel window during line changeovers to accommodate different product sizes without physically replacing the actuator.
End-Stop Calibration
Dial in the exact retract position during machine commissioning using the rear adjuster, avoiding the need to add external mechanical stops.
Heavy Clamping Fixtures
Leverage the 2513N push force at 0.5 MPa to securely clamp workpieces, using the adjustable stroke to compensate for varying material thicknesses.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30S the Right Cylinder?
Select this 80mm bore cylinder when an application requires substantial force—stepping down to a 63mm bore yields 1559N push at 0.5 MPa, while this 80mm model provides 2513N. Choose the SAIJ adjustable-stroke format over a fixed SAI cylinder when you need precise end-position tuning for product changeovers or varying material thicknesses. If your setup requires holding a load without continuous live air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you should instead explore an AirTAC SAIL or BSAI cylinder.
For an exact ISO 15552 replacement match, confirm the 80mm bore, 280mm stroke, 30mm adjustment range, PT port thread, and the -S magnet option. Mounting options for the SAIJ series include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. Since the stroke is 280mm, ensure proper external guiding to prevent excessive side-loading on the rod.
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 SAIJ80AX280-30S FAQ
The rear adjuster acts as an external mechanical stop, allowing you to shorten the effective stroke by up to 30mm. This creates a usable travel window of 250-280mm, providing fine-tuning flexibility at commissioning without needing to swap the cylinder.
At 0.5 MPa operating pressure, the SAIJ80X280-30-S provides 2513N of push force and 2268N of pull force. It can reach a maximum push force of 4523N at 0.9 MPa.
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