Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX25-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 25mm 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
- Stroke25 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 SAIJ80BX25-20S
Because this specific SKU combines a 25mm nominal stroke with a 20mm adjustment range, it yields a highly versatile 5-25mm usable travel window. This makes it exceptionally practical for short-stroke setups requiring exact end-position tuning without swapping hardware.
Built with a SUS304 stainless steel rod (code B) and PT tapered ports, this unit handles 0.15-1.0 MPa operating pressures. The extruded aluminum barrel features sensor grooves on both sides for CMSE and DMSE switches. The rear adjuster acts purely as a travel stop to set deceleration, so an external rod lock or pilot-operated check valve is required if you need to hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 25 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 SAIJ80BX25-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×25 | 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 SAIJ80BX25-20S Is Used
Precision End-Stop Tuning
Dial in the exact 5 to 25mm clamping depth during machine commissioning using the rear screw, avoiding the need to physically swap cylinders for minor position corrections.
Product Size Changeovers
Adapt quickly to varying product heights on a packaging line by adjusting the retract stop up to 20mm, ensuring consistent performance without mechanical rebuilds.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20S the Right Cylinder?
If your setup needs less force, stepping down to a 63mm bore provides 1559N, whereas moving up to a 100mm bore yields 3927N. The adjustable 5-25mm window is ideal for machine changeovers where a fixed 25mm SAI cylinder would be too rigid.
To match this ISO 15552 interchangeable cylinder exactly, specify an 80mm bore, 25mm stroke, 20mm adjustment, PT ports, SUS304 rod, and the -S magnet. Since the total travel is under 300mm, side-load stress on the 25mm rod is minimal, though external guides remain best practice for heavy lateral loads.
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 SAIJ80BX25-20S FAQ
At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to trim the effective travel by up to 20mm. Given the 25mm nominal stroke, this creates a usable travel window of 5 to 25mm, letting you set the exact end position at commissioning without adding external stops.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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