Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50
The AirTAC SAIJ80X290-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 240 to 290 mm, allowing you to dial back the nominal stroke by up to 50 mm during commissioning. Delivering 4523 N of push force at 0.9 MPa, it handles heavy loads without needing external stops.
This extruded aluminum profile barrel includes sensor grooves on both sides for flexible mounting. The carbon steel rod uses an M20x1.5 thread, and the G3/8 PT port handles the required air volume. The rear adjuster acts purely as a travel stop for end-position tuning; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80X290-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80X290-50 Is Used
Machine Setup & Changeover
Dial in the exact 240-290 mm retract position during product changeovers without adding external physical stops to the machine frame.
Variable End Stops
Adjust the stroke end-point on the fly to accommodate varying package sizes or pallet dimensions on a packaging line.
Clamping Force Tuning
Fine-tune the clamping distance on heavy assemblies, ensuring precise contact without over-traveling the 80 mm bore.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50 the Right Cylinder?
Choose this 80 mm bore when the 50 mm bore (1374 N push at 0.5 MPa) is insufficient, but before stepping up to the 100 mm bore (5497 N push at 0.7 MPa). The 50 mm adjustment range is ideal for product-size changeovers on a line, letting you fine-tune the retract end without swapping cylinders. For load-holding without live pressure, use an external rod lock or pilot-operated check valve, or select the SAIL or BSAI series instead.
Because the 290 mm stroke is near the maximum standard limit, the M20x1.5 threaded rod and 36 mm cushion face higher side-load risks. Always use an external guide to prevent rod binding. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80X290-50 FAQ
The rear adjuster screw lets you shorten the effective travel by up to 50 mm, creating a 240 to 290 mm usable stroke window. It acts as a mechanical stop for end-position tuning and does not lock the load.
At 0.7 MPa operating pressure, it provides 3518 N of push force and 2268 N of pull force. At 0.9 MPa, the push force reaches 4523 N.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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