Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 270mm 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
- Stroke270 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30S
The AirTAC SAIJ100X270-30-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. It features a carbon steel rod and a built-in magnet for CMSE reed and DMSE electronic sensors. The external stopper at the rear allows you to fine-tune the end position, creating a usable travel window of 240-270 mm without adding external stops.
This extruded aluminum barrel design includes sensor grooves on both sides and omits the FB, CA, CB, and CR mounting options, utilizing a reduced set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. The adjuster acts solely as a travel stop to set deceleration, not as a lock, and does not hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 270 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 SAIJ100X270-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×270 | 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 SAIJ100X270-30S Is Used
Machine Changeover
Dial in the 240-270mm travel window during product size changes without physically swapping cylinders on the line.
End-Position Tuning
Fine-tune the retract end-stop during commissioning to perfect the seating force of a 100mm bore actuator.
Variable End Stops
Adjust the effective stroke on the fly for assembly lines processing parts with slightly varying dimensions.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30S the Right Cylinder?
Choose this 100mm bore when an 80mm bore (2513N push at 0.5 MPa) is insufficient or a 125mm bore (6136N) is too large for your space. The 30mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end position during commissioning rather than swapping a fixed-stroke SAI cylinder. When replacing an ISO 15552 cylinder, match the 100mm bore, 270mm stroke, PT tapered ports, and the -S magnet requirement.
With a 270mm stroke, the 25mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is recommended for unsupported loads to prevent side-load wear. For load-holding without live pressure, use an external rod lock or pilot-operated check valve, or explore 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 SAIJ100X270-30S FAQ
At 0.5 MPa it provides 3927N push and 3681N pull force. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster screw acts as a stopper, allowing you to trim the 270mm nominal stroke back by up to 30mm, creating a 240-270mm usable travel window. It sets the travel end but does not lock the load.
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