Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20 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 SAIJ80AX290-20
The AirTAC SAIJ80X290-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 290 mm travel back by up to 20 mm. This creates a precise 270-290 mm usable window, enabling on-the-fly end-position tuning during commissioning without swapping out the physical barrel. Driven by filtered air from 0.15 to 1.0 MPa, it generates 2513 N of push force and 2268 N of pull force at a 0.5 MPa supply.
This SKU is configured with an SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel incorporates sensor grooves on both sides for direct mounting of switches. The rear adjustment screw functions purely as a travel stop to set the retract position and relies on the integrated air cushions for end-of-stroke deceleration; it is not a locking mechanism.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20 |
|---|---|
| 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 SAIJ80AX290-20
| 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 SAIJ80AX290-20 Is Used
End-Stop Tuning
Dial in the exact retract position within the 270-290 mm window during machine commissioning to perfect pick-and-place alignment.
Product Changeover
Quickly adjust the stroke length on a packaging line when switching to a different carton size without replacing the cylinder.
Clamp Force Setup
Fine-tune the approach distance on a workholding fixture to regulate the clamping impact without reprogramming the machine.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-20 the Right Cylinder?
Choose this 80 mm bore over the smaller 50 mm option if your application requires more than the 982 N of push force that the 50 mm bore provides at 0.5 MPa. The adjustable stroke is ideal for production lines that undergo frequent product size changeovers, allowing operators to dial in the exact end-stop without adding external mechanical stops. If your process requires holding a load in place without continuous live air pressure, this cylinder is not suitable; you should instead select a SAIL (air-released lock) or BSAI (clamp-lock) model. To match this ISO 15552 replacement exactly, specify a 290 mm stroke, 20 mm adjustment range, PT G3/8 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet (-S). Because the 290 mm stroke is relatively long, an external guide should be used to prevent excessive side-loading on the 25 mm rod.
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 SAIJ80AX290-20 FAQ
The rear adjuster acts as a mechanical stop that shortens the effective travel by up to 20 mm, giving you a usable range of 270-290 mm. It sets the end position and works alongside the air cushions for deceleration, but it does not lock or hold the load without live air pressure.
At a 0.5 MPa operating pressure, the SAIJ80X290-20 provides 2513 N of push force and 2268 N of pull force. The operating speed range for this bore size is 30-800 mm/s.
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