Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 270mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100
The AirTAC SAIJ80X270-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 2513N of push force and 2268N of pull force at 0.5 MPa, making it well-suited for medium-to-heavy actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position detection.
Equipped with a 100mm adjustment range, this model allows you to fine-tune the effective travel anywhere between 170mm and 270mm without swapping out the unit. The rear stopper screw lets you dial in the exact retract position during commissioning or product changeover. The adjuster acts purely as a travel stop and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80X270-100 Is Used
Variable End-Stop Positioning
Dial in the retract distance from 170mm to 270mm on packaging lines that process differently sized cartons, using the rear screw rather than external mechanical stops.
Machine Setup and Changeover
Quickly fine-tune the end-of-stroke position during format changeovers without disassembling the cylinder or altering the ISO 15552 mounting footprint.
Heavy-Duty Forming Operations
Leverage the 2513N push force at 0.5 MPa for pressing or clamping applications where the exact travel distance needs on-site adjustment to prevent over-travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-100 the Right Cylinder?
Choose this 80mm bore when an application requires more thrust than the 63mm option (which provides 1559N push at 0.5 MPa), but you want to avoid the larger 100mm footprint. The 100mm adjustment window is particularly useful for machines handling varying product sizes, as it provides a wide variable end-stop range. Because the total stroke is 270mm, the 25mm carbon steel rod and M20x1.5 thread provide robust support, though an external guide should still be used to manage side loads on longer travels.
For an exact ISO 15552 replacement match, verify the 80mm bore, 270mm stroke, 100mm adjustment, G3/8 PT tapered ports, and the required mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that this standard version lacks a magnet for CMSE or DMSE sensors; specify the -S option if electronic or reed switch feedback is required. If the machine loses air, this cylinder will not hold its load—consider the SAIL or BSAI series for pneumatic locking needs.
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 SAIJ80 Adjustable Cylinder SAIJ80X270-100 FAQ
The rear adjuster screw allows you to shorten the nominal 270mm stroke by up to 100mm, providing an effective travel window of 170mm to 270mm. It acts as a mechanical stop to set the end position and is not a locking device.
At 0.5 MPa operating pressure, it provides 2513N of push force and 2268N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 5026N.
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