Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-20S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-20S
The AirTAC SAIJ80X325-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a robust 2513N push force at 0.5 MPa and features a 325mm nominal stroke that can be fine-tuned down by up to 20mm, creating a precise 305-325mm usable travel window. This built-in adjustability allows operators to dial in the exact retract end-position during commissioning without swapping out the entire unit.
This specific SKU includes a piston magnet for use with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the dual-side sensor grooves on the extruded aluminum barrel. It uses a carbon steel rod with an M20x1.5 thread and PT tapered ports. Because the 325mm stroke is relatively long, the 25mm rod diameter provides excellent resistance to side-loading, though an external guide is still recommended for unsupported loads.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-20S |
|---|---|
| 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 | 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 SAIJ80X325-20S
| 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 SAIJ80X325-20S Is Used
Product Changeover
Quickly reconfigure the retract distance by up to 20mm on packaging lines handling varying container sizes without changing the cylinder mounting.
End-Position Tuning
Fine-tune the final resting position of a heavy press or clamping jaw during machine commissioning to avoid mechanical interference.
Variable Diverter Stops
Adjust the stroke window on the fly for conveyor diverters that need to accommodate different pallet widths on the same line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-20S the Right Cylinder?
Choose this 80mm bore when an application demands higher thrust than a 63mm cylinder (1559N at 0.5 MPa) but does not require the full output of a 100mm bore (3927N). The adjustable stroke is ideal for production lines running mixed product sizes, allowing you to shift the end-stop by up to 20mm during changeovers rather than installing external physical stops. If your setup requires the load to be held mechanically without live air pressure, note that this rear adjuster functions only as a travel stop; you would need to specify a SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
To match this exact ISO 15552 interchangeable cylinder for a replacement, verify the 80mm bore, 325mm stroke, 20mm adjustment range, G3/8 port (cut to PT tapered threads), and the -S magnet option. It supports a speed range of 30-800 mm/s and utilizes a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ80X325-20S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
A rear external screw acts as a mechanical stopper, allowing you to shorten the effective stroke from the 325mm nominal length down to a minimum of 305mm, giving a 305-325mm adjustable travel window. It is a stop, not a lock, so live air is still required to hold the load.
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