Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-100 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 SAIJ80AX280-100
The AirTAC SAIJ80X280-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel. With a nominal 280 mm stroke and a 100 mm adjustment range, it provides a usable travel window of 180 to 280 mm. This enables precise end-position tuning at commissioning without adding external stops. The 80 mm bore delivers 2513 N of push force at 0.5 MPa, scaling up to 4523 N at 0.9 MPa.
This unit uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. It supports AirTAC CMSE reed and DMSE electronic sensors, though this specific SKU is configured without a magnet. The rear adjuster acts strictly as a travel stop for deceleration and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-100 |
|---|---|
| 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 SAIJ80AX280-100
| 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 SAIJ80AX280-100 Is Used
Product Changeover
Dial in the exact end-stop position on the fly when switching a packaging line to a different carton size, utilizing the full 100 mm adjustment window.
Machine Setup
Fine-tune the retract position during commissioning to perfect a press fit without physically swapping the cylinder or machining external stop blocks.
Variable Diverting
Adjust the stroke on a diverter arm to route products of varying widths down a conveyor belt accurately.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-100 the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust—stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa, while stepping up to a 100 mm bore yields 3927 N. An adjustable stroke is selected over a fixed SAI cylinder when machine setups require variable end-stops or frequent product-size changeovers. For load-holding without continuous air pressure, this cylinder is insufficient; the rear stop is not a brake, so consider an AirTAC SAIL or BSAI series instead.
This configuration includes a 280 mm stroke, 100 mm adjustment, PT port, and no magnet. It is dimensionally interchangeable with ISO 15552 cylinders. Available mountings are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 280 mm, the 25 mm rod should be guided externally on long unsupported spans to prevent side-load damage.
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 SAIJ80AX280-100 FAQ
At 0.5 MPa, the 80 mm bore provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw lets you shorten the 280 mm nominal stroke by up to 100 mm, creating a usable travel window of 180 to 280 mm. It functions as a physical stop to set the end position and does not lock the load.
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