Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX280-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 280mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40
The AirTAC SAIJ100X280-40 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 280 mm stroke that can be dialed back by up to 40 mm, creating a precise 240-280 mm usable travel window for commissioning flexibility.
This variant features a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, though this specific SKU is configured without a magnet. The rear adjuster acts purely as a travel stop to decelerate the end-of-stroke position and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100AX280-40 Is Used
Product Changeover
Dial in the 240-280 mm travel window during format changes on a packaging line, using the rear screw to set new end positions without swapping the entire cylinder.
Machine Setup
Fine-tune the final retract position during commissioning to perfectly align a 3927 N clamping action against varying workpiece heights.
Variable End Stops
Adjust the effective stroke on the fly for automated assembly equipment, preventing overtravel when dealing with delicate components.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40 the Right Cylinder?
Choose this 100 mm bore actuator when your application requires substantial thrust—3927 N at 0.5 MPa or 5497 N at 0.7 MPa. If your setup needs less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The integrated 40 mm adjustment screw is selected over a fixed-stroke SAI cylinder when you need variable end-stops to accommodate product size changeovers without adding external stopper blocks.
For an exact ISO 15552 replacement, match the 100 mm bore, 280 mm stroke, 40 mm adjuster, G1/2 PT tapered port, and the absence of a magnet. Because the 280 mm stroke exceeds 300 mm guidelines for unsupported loads, ensure you use an external guide to prevent rod side-loading, as the 25 mm rod and M20x1.5 thread can only compensate so much. Note that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
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 SAIJ100 Adjustable Cylinder SAIJ100AX280-40 FAQ
At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as an external stopper that lets you shorten the 280 mm nominal stroke by up to 40 mm, yielding a 240-280 mm travel window. It sets the end position but does not lock the load without live air pressure.
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