Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30 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 SAIJ80AX280-30
The AirTAC SAIJ80X280-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 250 to 280 mm. Delivering 3518 N of push force at 0.7 MPa, it handles robust actuation tasks while allowing precise end-position tuning during commissioning. The piston rod is constructed from SUS420J2 stainless steel, offering enhanced durability and corrosion resistance compared to standard carbon steel.
Unlike a fixed-stroke SAI cylinder, this model features an external adjusting screw at the rear that trims the effective stroke by up to 30 mm without adding external stops. It utilizes PT tapered port threads (G3/8) and relies on variable air cushions at both ends to manage deceleration. Remember that this rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for position holding, consider an SAIL or BSAI series cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30 |
|---|---|
| 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 SAIJ80AX280-30
| 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 SAIJ80AX280-30 Is Used
Machine Changeover
Dial in the 250-280 mm stroke window during product-size changeovers without physically swapping the cylinder or bolting on external stops.
End-Position Tuning
Fine-tune the retract end-position during initial commissioning using the rear adjuster, accommodating mechanical tolerances in the fixture.
Robust Actuation
Leverage 3518 N of push force at 0.7 MPa for heavy material handling, utilizing the SUS420J2 stainless rod for improved wear resistance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-30 the Right Cylinder?
Choose this 80 mm bore when your application requires substantial force—stepping down to a 63 mm bore yields 2182 N at 0.7 MPa, which may be insufficient for heavier payloads. The adjustable 250-280 mm travel window is ideal for machine setups requiring variable end-stops or product-size changeovers, saving the downtime of physically swapping cylinders. For drop-in compatibility, match the 80 mm bore, 280 mm stroke, 30 mm adjustment, PT G3/8 ports, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since the stroke is 280 mm, ensure external guiding is used to prevent excessive side-load on the unsupported 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 SAIJ80AX280-30 FAQ
At 0.7 MPa operating pressure, the 80 mm bore generates 3518 N of push force and 2268 N of pull force. It can deliver up to 4523 N push at 0.9 MPa.
The rear adjusting screw trims the effective stroke by up to 30 mm, creating a usable travel window between 250 and 280 mm. This stopper sets the travel end but does not lock or hold the load without live air pressure.
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