Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-100 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 SAIJ100X270-100
The AirTAC SAIJ100X270-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 7068N of push force at 0.9 MPa and provides a usable travel window of 170 to 270 mm, allowing you to dial back the nominal stroke by up to 100 mm. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
Equipped with a 25mm carbon steel piston rod and an M20x1.5 thread, this unit handles higher side loads than smaller bores, though long unsupported travel still requires an external guide. The rear adjuster acts strictly as a travel stop for commissioning and product changeovers, meaning it will not hold a load without continuous live air pressure. For applications requiring true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-100 |
|---|---|
| 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 SAIJ100X270-100
| 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 SAIJ100X270-100 Is Used
Variable End-Stop Machining
Fine-tune the retract position within the 170-270mm window to accommodate different material thicknesses without changing the cylinder setup.
Machine Changeover
Rapidly adjust the stroke during product line changeovers to set new end-of-stroke positions precisely at the commissioning stage.
Assembly Press Tuning
Leverage the 7068N push force for pressing applications, using the rear stopper to dial in the exact depth needed for various component sizes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-100 the Right Cylinder?
Choose this 100mm bore cylinder when your application requires substantial thrust—stepping down to an 80mm bore reduces push force to 4523N at 0.9 MPa, while moving up to 125mm yields 11045N. The 100mm adjustable-stroke design is ideal for machine setups requiring variable end-stops without physically swapping cylinders or adding external mechanical stops. Since the 270mm stroke exceeds 300mm? No, but even at 270mm, ensuring adequate external guidance is recommended to prevent rod binding.
When replacing an ISO 15552 cylinder, match the 100mm bore, 270mm nominal stroke, 100mm adjustment range, G1/2 port, and mounting interface. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, explicitly omitting FB, CA, CB, and CR. This standard configuration uses a carbon steel rod and lacks a magnet; adding a -S magnet enables CMSE reed or DMSE electronic sensors.
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 SAIJ100X270-100 FAQ
At 0.9 MPa operating pressure, this 100mm bore cylinder provides 7068N of push force and 3681N of pull force. The maximum push force is 801 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the effective stroke by up to 100mm, creating a usable travel window of 170 to 270mm. It functions as a mechanical stop for end-position tuning and does not lock or hold the load without live air.
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