Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-20S 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 SAIJ100X270-20S
The AirTAC SAIJ100X270-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa and features a 250-270mm usable travel window, allowing you to dial back the 270mm nominal stroke by up to 20mm during commissioning. The integrated -S magnet enables precise position detection using CMSE reed or DMSE solid-state sensors housed in the dual-side barrel grooves.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops when fine-tuning end positions. It utilizes a PT tapered G1/2 port and a durable 25mm carbon steel rod, but remember the adjuster acts only as a travel stop; it does not hold loads without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-20S |
|---|---|
| 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 SAIJ100X270-20S
| 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 SAIJ100X270-20S Is Used
Machine Changeover
Dial in the 250-270mm travel window during product size changeovers to set new end positions without swapping out the entire cylinder assembly.
End-Position Tuning
Fine-tune the retract stroke by up to 20mm at commissioning to perfectly align tooling, compensating for mechanical tolerance stack-ups.
Automated Assembly
Leverage the 5497N push force at 0.7 MPa to drive heavy assembly presses while using the rear stop to prevent over-travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-20S the Right Cylinder?
Choose this 100mm bore model when your application requires higher thrust than the 80mm version (which provides 3518N at 0.7 MPa) but does not necessitate stepping up to the heavier 125mm bore. The 20mm rear adjustment window is ideal for machinery that requires variable end-stops or product-size changeovers without mechanical retooling. Because the total stroke is 270mm, ensure adequate external guiding to prevent excessive side-loading on the 25mm rod during extended travel.
When matching this ISO 15552 cylinder for a retrofit, verify the 100mm bore, 270mm stroke, 20mm adjustment range, PT G1/2 port, and the required -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR brackets found on other series. For applications requiring true load-holding without live air, consider the SAIL pneumatic lock or BSAI clamp-lock cylinders 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 SAIJ100X270-20S FAQ
At an operating pressure of 0.7 MPa, this 100mm bore cylinder generates a push force of 5497N and a pull force of 3681N. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 270mm down to a minimum of 250mm. It sets the travel end but does not lock or hold the load without continuous air pressure.
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