Airtac SAIJ80 Adjustable Cylinder SAIJ80BX225-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX225-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 225mm 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
- Stroke225 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 SAIJ80BX225-40S
The AirTAC SAIJ80X225-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The PT tapered port threads ensure a reliable, leak-free pneumatic connection in demanding industrial environments.
This specific SKU provides a nominal 225mm stroke that can be dialed back by up to 40mm, creating a precise 185-225mm usable travel window. This built-in adjuster acts as a mechanical stop to fine-tune the retract end position during commissioning or product changeovers without swapping the cylinder. It utilizes standard variable air cushions at both ends and operates at speeds between 30-800mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX225-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX225-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 225 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 SAIJ80BX225-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 SAIJ80BX225-40S Is Used
Product Changeover
Quickly dial in the 185-225mm travel window during format changes on a packaging line, using the rear stopper to set exact retract distances for varying product sizes.
Commissioning Calibration
Fine-tune the end-of-stroke position during initial machine setup without physically swapping cylinders or machining external bumpers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX225-40S the Right Cylinder?
Select this 80mm bore cylinder when your application requires substantial thrust but demands exact end-position tuning on the fly. Choose the SAIJ adjustable-stroke format over a fixed SAI model when your machine setup requires variable end stops or product-size adjustments without adding external stops.
For an exact ISO 15552 replacement match, ensure you specify the 80mm bore, 225mm stroke, 40mm adjustment range, PT port threads, and the -S magnet option. Because the 225mm stroke is relatively long, the 25mm rod diameter should be paired with an external guide to prevent excessive side-loading. Note that the rear adjuster is a travel stop, not a lock; the cylinder cannot hold a load without live air, so consider a SAIL or BSAI model if true load-holding is required.
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 SAIJ80BX225-40S FAQ
At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 225mm down to a minimum of 185mm. This creates a 185-225mm usable window, letting you set the exact retract end position during commissioning without changing the cylinder.
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