Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-20S
The AirTAC SAIJ80X225-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 225 mm nominal stroke that can be fine-tuned down by up to 20 mm, giving you a precise 205-225 mm usable travel window during commissioning. In the 80 mm bore class, it delivers a robust 2513 N push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This variant includes a magnet for position sensing and uses a carbon steel piston rod with an M20x1.5 thread. Because it is an extruded aluminum profile cylinder, it integrates sensor grooves on both sides for easy switch mounting. The rear adjuster acts purely as a mechanical stop to dial in the end position, meaning it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 225 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 SAIJ80X225-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 SAIJ80X225-20S Is Used
Product Changeovers
Dial in the 205-225 mm travel window on the fly to accommodate different package sizes without bolting on external stops.
Machine Setup
Fine-tune the retract end-position during commissioning to achieve precise mechanical alignment using the rear screw.
Heavy Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavy pallets or fixtures into their exact working stations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-20S the Right Cylinder?
Choose this 80 mm bore cylinder when an application requires substantial force—stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for product changeovers on a line, allowing you to shift the end-stop without swapping the cylinder or adding external stops. To replace an ISO 15552 cylinder, match the 225 mm stroke, 20 mm adjustment, G3/8 PT port, and -S magnet.
With a 225 mm stroke, the 25 mm rod and M20x1.5 thread handle high side loads, but an external guide is still recommended for unsupported loads. For load-holding without live air, note that the rear stop is not a lock; you would need an AirTAC SAIL or BSAI cylinder instead. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ80X225-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw lets you shorten the 225 mm nominal stroke by up to 20 mm, creating a 205-225 mm travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without air pressure.
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