Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX350-20 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-20
The AirTAC SAIJ80X350-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the rear stopper screw, you can trim the effective travel within a 330 to 350 mm window, enabling precise end-position tuning without swapping out the entire actuator.
Because the nominal stroke is 350 mm, the 25mm rod and M20x1.5 thread should be paired with an external guide to manage side loading. This extruded aluminum profile cylinder includes sensor grooves on both sides, though a magnet is not specified for this configuration. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-20 |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-20
| 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 SAIJ80BX350-20 Is Used
Machine Changeover
Fine-tune the 330-350mm retraction stop during product size transitions to perfectly position parts without re-mounting the cylinder.
End-Stop Calibration
Dial in the exact end-of-stroke position during machine commissioning to prevent mechanical crashes and optimize tooling alignment.
Variable Positioning
Adjust the effective travel window on automated lines to accommodate different material lengths on the fly using the rear stopper.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-20 the Right Cylinder?
Select this 80mm bore actuator when an application requires heavy thrust—delivering 3518N at 0.7 MPa—combined with on-the-fly end-position adjustments during product changeovers. If your setup needs less force, stepping down to a 63mm bore yields 2182N at 0.7 MPa, whereas moving up to a 100mm bore provides 5497N. The adjustable 330-350mm window makes this SKU ideal for dialing in exact retraction distances at commissioning, a distinct advantage over a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 80mm bore, 350mm nominal stroke, 20mm adjustment range, PT tapered port thread, and standard mounting interface. Supported mounts include Basic, FA, LB, TC, FTC, TCM1, and TCM2. For load-holding without continuous air pressure, integrate an external rod lock or select an AirTAC SAIL or BSAI model, as the SAIJ adjuster is not a locking mechanism.
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 SAIJ80BX350-20 FAQ
At 0.5 MPa, the push force is 2513N and the pull force is 2268N. If you increase the operating pressure to 0.7 MPa, the push force reaches 3518N.
The rear adjuster screw lets you mechanically shorten the 350mm nominal stroke by up to 20mm, providing a usable travel window of 330 to 350mm. This stopper sets the travel end but does not lock the load without live air pressure.
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