Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 275mm 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
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-100
The AirTAC SAIJ80X275-100 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stopper, allowing you to dial back the nominal 275 mm stroke by up to 100 mm. This creates a precise usable travel window of 175-275 mm, enabling fine end-position tuning at commissioning without swapping the hardware. It delivers robust thrust, pushing with 4523 N and pulling with 2268 N at a 0.9 MPa operating pressure.
This variant features a SUS420J2 stainless steel piston rod (material code A) and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock, so it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 275 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 SAIJ80AX275-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SAIJ80AX275-100 Is Used
Machine Changeover
Dial in the 175-275 mm travel window during product size transitions without physically replacing the cylinder or adding external stops.
Variable End-Stop Positioning
Set precise retraction limits on packaging lines to accommodate different carton sizes on the fly.
Commissioning Fine-Tuning
Use the rear adjuster screw to trim out mechanical tolerance and hit the exact end-of-stroke position during initial machine setup.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-100 the Right Cylinder?
Choose this 80 mm bore when your application requires more force than a 63 mm cylinder (which provides 2805 N push at 0.9 MPa) but you want to avoid the larger footprint of a 100 mm unit. The 100 mm adjustment range is ideal for product-size changeovers on a line, letting you set variable end-stops on the fly instead of relying on a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, you would need a different mechanism like the SAIL air-released lock or an external pilot-operated check valve.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 275 mm stroke, 100 mm adjustment, G3/8 port, and PT thread type. Because the 275 mm stroke is substantial, the 25 mm rod diameter handles moderate side loads, but long unsupported strokes still require an external guide to prevent rod binding. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles.
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 SAIJ80AX275-100 FAQ
At a 0.9 MPa operating pressure, this 80 mm bore cylinder generates a push force of 4523 N and a pull force of 2268 N. The maximum thrust is 513 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the effective travel from the nominal 275 mm down to as little as 175 mm. This provides a 100 mm tuning window to set the exact retract end-position without changing the cylinder itself.
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