Airtac SAIJ80 Adjustable Cylinder SAIJ80AX270-100S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX270-100S 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 SAIJ80AX270-100S
The AirTAC SAIJ80X270-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5MPa. Its 270mm nominal stroke can be dialed back by up to 100mm, creating a precise 170-270mm usable travel window for product changeovers. This unit features a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and PT tapered port threads.
Because the stroke reaches 270mm, the M20x1.5 rod thread and 25mm rod diameter should be paired with an external guide to handle potential side loading. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) interfaces directly with AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX270-100S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX270-100S |
|---|---|
| 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 SAIJ80AX270-100S
| 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 SAIJ80AX270-100S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance within the 170-270mm window during machine setup, accommodating different material thicknesses without mechanical rebuilds.
Product Changeover
Quickly adjust the stroke by up to 100mm on a packaging line to handle varying carton sizes, minimizing downtime between production runs.
Assembly Press Positioning
Leverage the 2513N push force at 0.5MPa to seat components accurately, using the rear screw to fine-tune the final pressing depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX270-100S the Right Cylinder?
Choose this 80mm bore when an application requires more power than the 63mm variant (which provides 1559N push at 0.5MPa) but less bulk than the 100mm option. The generous 100mm adjustment range is ideal for machines running multiple product sizes, allowing operators to fine-tune the retract end position at commissioning without swapping cylinders or adding external stops. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
For a direct ISO 15552 replacement, match the 80mm bore, 270mm stroke, 100mm adjustment, PT ports, and the -S magnet. Remember that the rear adjuster functions strictly as a travel stop to set deceleration, not as a locking device. If the machine requires true load-holding without live air pressure, specify an AirTAC SAIL or BSAI cylinder 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 SAIJ80 Adjustable Cylinder SAIJ80AX270-100S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder generates 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw acts as a mechanical stop that shortens the effective stroke from its 270mm nominal length. You can trim the travel back by up to 100mm, providing a usable 170-270mm window to fine-tune the end position without replacing the cylinder.
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