Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75
The AirTAC SAIJ100X280-75 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and utilizes a G1/2 port with a 25mm carbon steel rod. The integrated adjuster allows you to dial back the 280mm nominal stroke by up to 75mm, creating a precise 205-280mm usable travel window for on-the-fly positioning.
This adjustable design eliminates the need to swap cylinders or bolt on external stops during product changeovers. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75 |
|---|---|
| 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75
| 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 SAIJ100X280-75 Is Used
Variable End-Stop Tuning
Dial in the exact retraction point between 205 and 280mm during machine setup without replacing the entire cylinder or adding secondary stop blocks.
Product Changeover Systems
Quickly adapt the stroke length on packaging lines handling different carton sizes by turning the rear adjuster to match the new format requirements.
Heavy-Duty Positioning
Leverage the 3927N push force to move heavy jigs into place, relying on the fine-tuned end position to ensure accurate mating of large components.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-75 the Right Cylinder?
Choose this 100mm bore when an 80mm bore (providing 2513N push at 0.5 MPa) is insufficient for moving heavy actuators, but a 125mm bore is oversized for your space constraints. The SAIJ100X280-75 is selected over a fixed-stroke SAI when the exact end-of-stroke position must be fine-tuned at commissioning or adjusted for varying product sizes on a shared production line. Because the 280mm stroke exceeds 300mm, an external guide is recommended to prevent excessive side loading on the 25mm rod. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider the SAIL or BSAI series.
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 SAIJ100X280-75 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. If you need higher thrust, stepping up to a 125mm bore yields 6136N of push force.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective travel from the 280mm nominal stroke down to 205mm. It only sets the end-of-stroke deceleration point and does not lock the load without continuous air pressure.
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