Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30 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 SAIJ100X270-30
The AirTAC SAIJ100X270-30 is a double-acting 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 240 to 270 mm, allowing you to dial back the nominal stroke by up to 30 mm during commissioning. The carbon steel piston rod features an M20x1.5 thread, and the body integrates sensor grooves on both sides for flexible positioning switch placement.
This adjustable model uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position without swapping components, but it does not hold the load without live air pressure. For pneumatic load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30 |
|---|---|
| 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 SAIJ100X270-30
| 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 SAIJ100X270-30 Is Used
Product Changeover
Dial in the exact 240-270mm travel window during format changes without physically swapping cylinders or adding external stopper blocks.
Machine Setup
Fine-tune the retract end position during initial commissioning to perfect pressing or positioning accuracy on the assembly line.
Variable End Stops
Easily adjust the stroke length for multi-product lines that require different retraction distances from a single actuator.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-30 the Right Cylinder?
Choose this 100mm bore cylinder when your application requires substantial thrust, such as the 5497N push force at 0.7 MPa, combined with precise end-position tuning. If your force requirements are lower, stepping down to an 80mm bore yields 3518N at 0.7 MPa, while moving up to a 125mm bore provides 8590N. The adjustable 240-270mm travel window is ideal for product changeovers on a line, letting you set variable end stops without adding external physical blocks.
When replacing an ISO 15552 cylinder, match the 100mm bore, 270mm nominal stroke, 30mm adjustment range, PT G1/2 port, and the specific mounting style. Because the 270mm stroke is moderately long, ensure proper guiding for any side loads. Note that this SKU lacks a magnet; adding the -S option enables CMSE reed and DMSE electronic sensor compatibility.
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 SAIJ100X270-30 FAQ
At an operating pressure of 0.5 MPa, the 100mm bore provides 3927N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective travel from the 270mm nominal stroke down to a minimum of 240mm. This stopper only sets the travel end and does not lock or hold the load without live air pressure.
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