Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-40 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 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 SAIJ100BX280-40
The AirTAC SAIJ100X280-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 240-280 mm usable travel window, allowing you to dial back the 280 mm nominal stroke by up to 40 mm. This bore size delivers a robust 5497 N push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This configuration uses a SUS304 stainless steel rod (option B) for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the internal magnet, meaning external solid-state DMSE or reed CMSE sensors cannot be used. The rear adjuster acts purely as a travel stop to fine-tune end positions during commissioning without requiring external stops.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-40 |
|---|---|
| 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 | 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 SAIJ100BX280-40
| 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 SAIJ100BX280-40 Is Used
Machine Changeover
Dial in the 240-280 mm travel window during product size changes to set new end positions without physically swapping cylinders.
Heavy Positioning
Leverage the 5497 N push force at 0.7 MPa to move heavy pallets or fixtures into their final operational stops.
Commissioning Calibration
Fine-tune the exact retract distance during initial setup, using the rear stopper to absorb final-position tolerances.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-40 the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires substantial thrust—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N. The 40 mm adjustment range is ideal for product changeovers, letting you shift the end-of-stroke position on the fly rather than swapping out a fixed-stroke SAI cylinder. Because the stroke is 280 mm, ensure adequate guiding to prevent excessive side-loading on the rod.
When specifying a replacement, match the 100 mm bore, 280 mm nominal stroke, 40 mm adjuster, PT port threads, and SUS304 (B) rod material. Remember that the rear adjuster only sets the travel end; it does not hold the load without live air. For true load-holding without pressure, consider an external rod lock or the AirTAC SAIL or BSAI series. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX280-40 FAQ
At 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. It can reach a maximum of 7068 N push at 0.9 MPa.
The rear adjuster lets you shorten the 280 mm nominal stroke by up to 40 mm, creating a 240-280 mm travel window. It acts as a mechanical stop to decelerate the load and set the end position, but it does not lock or hold the load without live air pressure.
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