Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-30
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX325-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 325mm 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
- Stroke325 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 SAIJ80BX325-30
By turning the external rear stopper screw, you can shorten the effective travel, providing a precise 295 to 325 mm usable window for dialing in the exact retract position. This eliminates the need to physically swap out the barrel during product changeovers or machine commissioning.
Built with a SUS304 stainless steel rod and PT tapered port threads, this 80 mm bore unit runs at speeds of 30-800 mm/s and features adjustable air cushions at both ends. The rear adjuster acts strictly as a travel stop for end-position tuning and deceleration; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 325 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 SAIJ80BX325-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×325 | 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 SAIJ80BX325-30 Is Used
Machine Changeover
Dial in the retract position by up to 30 mm when switching a production line to a new product size, avoiding the need to physically swap cylinders or add external stopper blocks.
End-Position Tuning
Fine-tune the 325 mm stroke during commissioning to perfectly mate the tooling with the workpiece, using the rear screw to set the exact 295-325 mm travel distance.
Variable End Stops
Set distinct retract endpoints for different machine cycles without altering the pneumatic plumbing, relying on the external adjuster to modify the effective travel window.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX325-30 the Right Cylinder?
Choose this 80 mm bore if your application requires more thrust than the 63 mm variant (1559N at 0.5 MPa) but less than the 100 mm bore (3927N). An adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops to accommodate multiple product sizes on a single line. When matching ISO 15552 replacements, specify the 80 mm bore, 325 mm stroke, 30 mm adjustment, PT port threads, and SUS304 (B) rod material. Since this unit lacks the -S magnet, it cannot host CMSE reed or DMSE electronic sensors.
Because the nominal stroke is 325 mm, the M20x1.5 rod thread and 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading on the piston. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on other variants.
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 SAIJ80BX325-30 FAQ
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke. For this model, it provides a usable travel window between 295 and 325 mm, allowing precise end-position tuning without changing the cylinder.
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Standard models are processed and dispatched in 3-5 business days.
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