Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40S 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 SAIJ100X270-40S
The AirTAC SAIJ100X270-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It provides a robust 3927N push force at 0.5 MPa and features a 25mm carbon steel piston rod with an M20x1.5 thread. Because this SKU includes the -S magnet, it directly supports AirTAC CMSE reed and DMSE solid-state electronic sensors via the dual-side extruded barrel grooves. The standard PT tapered G1/2 port handles the pneumatic supply.
By integrating a 40mm adjustment range, this model allows you to dial the effective travel back from 270mm down to 230mm. This built-in rear stopper enables precise end-position tuning at machine commissioning or during product changeovers, entirely removing the need to swap out the cylinder or bolt on external stops. The adjuster acts purely as a travel limit and works in tandem with the variable air cushions at both ends to decelerate the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40S |
|---|---|
| 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 SAIJ100X270-40S
| 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 SAIJ100X270-40S Is Used
Multi-Part Forming Press
Easily change the rear stop from 270mm to 230mm to accommodate different blank thicknesses on the same press without changing tooling.
Variable Position Diverter
Fine-tune the actuator's reach during machine commissioning to perfectly align a heavy package pusher without adding external mechanical stops.
Adjustable End-Stop Assembly
Dial in the exact clamping travel window during product changeover, using the 40mm adjustment screw to adapt to new assembly dimensions.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40S the Right Cylinder?
Choose this 100mm bore actuator when your application requires high thrust—stepping down to a 63mm bore yields 1559N push at 0.5 MPa, while moving up to a 125mm bore provides 6136N. The 270mm stroke falls within the standard 1500mm maximum for this bore, but because it exceeds 300mm, you should pair it with an external guide to prevent rod sag and manage side loading. The 25mm rod and M20x1.5 thread provide excellent rigidity for heavy transfer tasks.
Opt for the SAIJ adjustable-stroke variant over a fixed SAI model when you need variable end-stops to accommodate different part sizes on the same line. Keep in mind that the rear adjuster and air cushions only set the travel end and decelerate the load; they do not hold the load without live air pressure. For fail-safe load holding, consider the SAIL pneumatic lock or BSAI clamp-lock series. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100X270-40S FAQ
At 0.5 MPa, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw lets you mechanically shorten the 270mm stroke by up to 40mm, creating a usable travel window of 230-270mm. This stopper only sets the end position and does not lock the load without live air pressure.
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