Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50S 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 SAIJ100X280-50S
The AirTAC SAIJ100X280-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 230-280mm usable travel window, letting you dial back the nominal 280mm stroke by up to 50mm during commissioning without adding external stops. Operating at 0.5 MPa, it delivers 3927N of push force and 3681N of pull force.
This unit includes a magnet for CMSE reed and DMSE electronic sensors, which seat neatly into the dual-side sensor grooves on the extruded aluminum barrel. The 25mm carbon steel rod and M20x1.5 thread handle robust side loads, while the mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50S |
|---|---|
| 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 SAIJ100X280-50S
| 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 SAIJ100X280-50S Is Used
Machine Changeover
Dial in the exact 230 to 280mm retract position when switching product sizes on a packaging line, avoiding physical cylinder swaps.
End-Stop Tuning
Fine-tune the final end position during machine commissioning by turning the rear screw, eliminating the need for external mechanical stops.
Heavy-Duty Positioning
Leverage the 3927N push force to move heavy pallets or fixtures while precisely trimming the travel window to suit fixture dimensions.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50S the Right Cylinder?
Select this 100mm bore when an 80mm bore (2513N push at 0.5 MPa) lacks power or a 125mm bore (6136N push) is excessive. The 50mm adjustment window is ideal for product changeovers on a line, allowing you to reposition the retract end-stop rapidly. Since the 280mm stroke is substantial, always use an external guide to support the load and prevent rod bending.
For an exact ISO 15552 replacement, match the 100mm bore, 280mm stroke, 50mm adjustment, PT tapered port threads, and the -S magnet requirement. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; if you need true load-holding, 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 SAIJ100X280-50S FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster screw lets you shorten the nominal 280mm stroke by up to 50mm, creating a 230-280mm travel window. It acts as a mechanical stop to fine-tune the retract position and does not lock the load without live air pressure.
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