Airtac SAIJ80 Adjustable Cylinder SAIJ80AX700-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX700-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 700mm 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
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX700-20
The AirTAC SAIJ80X700-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 680 to 700 mm usable travel window, allowing you to dial back the nominal 700 mm stroke by up to 20 mm during commissioning. Operating at 0.9 MPa, it delivers a robust push force of 4523 N, making it well-suited for heavy-duty positioning tasks.
This variant is configured with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the rod diameter of 25 mm with an M20x1.5 thread provides excellent rigidity, though a 700 mm stroke still requires an external guide to prevent excessive side-loading.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX700-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX700-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAIJ80AX700-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SAIJ80AX700-20 Is Used
Variable End-Stop Positioning
Fine-tune the 680-700 mm travel window on the fly to accommodate varying product lengths without physically swapping out the cylinder.
Machine Changeover Setup
Use the 20 mm rear adjuster to precisely set the retracted end position during product size transitions on automated lines.
Heavy-Duty Ejection
Leverage the 4523 N push force at 0.9 MPa to reliably eject heavy finished parts, using the adjustable stop to prevent overtravel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX700-20 the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI cylinder when you need fine end-position tuning at machine setup or product changeover without adding external stops. If your application requires less force, stepping down to a 63 mm bore yields 2805 N of push force at 0.9 MPa. For higher force, a 100 mm bore provides 7068 N.
The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles. Because the rear adjuster and air cushions only decelerate the travel end, this cylinder will not hold a load without live air; for fail-safe load holding, consider the SAIL or BSAI series instead. It is dimensionally interchangeable with other ISO 15552 cylinders, matching the 80 mm bore, 700 mm stroke, 20 mm adjustment, PT port, and no magnet.
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 SAIJ80AX700-20 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder generates a push force of 4523 N and a pull force of 2268 N. The maximum allowable operating pressure is 1.0 MPa.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective travel from the 700 mm nominal stroke down to 680 mm. It decelerates the end position but does not lock the load without live air pressure.
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