Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75
The AirTAC SAIJ80X350-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits precise end-position tuning. With a nominal 350 mm stroke and a 75 mm adjustment range, you can dial the effective travel back to anywhere within a 275-350 mm window. This mechanism allows you to set exact retract distances during commissioning or product changeovers without swapping the cylinder or adding external stops. It delivers 2513 N of push thrust and 2268 N of pull thrust at 0.5 MPa.
This SKU features a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Because the 350 mm stroke is relatively long, the 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading on the piston. The rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80AX350-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SAIJ80AX350-75 Is Used
Variable End-Stop Forming
Dial the retract stroke back by up to 75 mm to accommodate different material lengths in a single forming station without changing tooling.
Product Changeover Stops
Quickly adjust the 275-350 mm travel window during line changeovers to position diverter arms or pushers for new package sizes.
Commissioning Fine-Tuning
Trim the effective stroke during machine setup to synchronize the cylinder's end position with adjacent moving components.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75 the Right Cylinder?
Choose this 80 mm bore when an application requires the 2513 N push force at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. An adjustable stroke is preferred over a fixed SAI cylinder when you need a variable end-stop to accommodate multiple product sizes on the same machine. For load-holding without continuous air pressure, note that this rear adjuster functions only as a travel stop, not a lock; you would need an SAIL or BSAI cylinder instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 350 mm stroke, 75 mm adjustment range, PT port threads, and the desired mounting set. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR. As specified, this configuration omits the -S magnet, so position sensing via CMSE or DMSE switches is not enabled without a model change.
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 SAIJ80AX350-75 FAQ
At an operating pressure of 0.5 MPa, 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 acts as a mechanical stop that lets you shorten the 350 mm nominal stroke by up to 75 mm, providing a usable travel window of 275-350 mm. It decelerates the travel end but does not lock or hold the load without live air pressure.
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