Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75S
The AirTAC SAIJ80X225-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, utilizing a 25 mm carbon steel rod and G3/8 PT ports. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors housed within the dual-side sensor grooves.
Featuring a 225 mm nominal stroke, the external rear stopper provides a 75 mm trim range, yielding a usable travel window of 150-225 mm. This built-in adjuster acts purely as a mechanical stop to define the retract end position and relies on the variable air cushion for deceleration; it does not lock or hold the load without continuous live air pressure. The extruded aluminum barrel maintains a standard ISO 15552 mounting footprint, utilizing a reduced set of accessories: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75S |
|---|---|
| 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 | 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 SAIJ80X225-75S
| 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 SAIJ80X225-75S Is Used
Product Changeovers
Dial in the exact retract position within the 150-225 mm window during packaging line format changes, avoiding the need to physically swap cylinders for different product sizes.
Machine Setup
Fine-tune the end-stop during commissioning to perfect the seating force of a 2513 N press operation, absorbing mechanical tolerances without adding external stopper blocks.
Variable End Stops
Adjust the reject arm travel on a conveyor system to accommodate varying package depths, using the 75 mm rear trim screw to set the precise retraction point.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial thrust—such as the 2513 N generated at 0.5 MPa—combined with on-the-fly end-position tuning. If your setup demands less force, stepping down to a 63 mm bore yields 1559 N of push force, whereas moving up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for product changeovers, allowing you to shorten the travel window from 225 mm down to 150 mm without swapping the cylinder or adding external stops. To replace this unit with another ISO 15552 cylinder, match the 80 mm bore, 225 mm stroke, 75 mm adjustment, G3/8 PT ports, and the -S magnet requirement.
Because the 225 mm stroke is substantial, the 25 mm rod and M20x1.5 rod thread provide robust resistance to side loads, but any long unsupported stroke still necessitates an external guide rail to prevent premature seal wear. For applications requiring true load-holding without live air, a plain SAIJ is insufficient; consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock.
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 SAIJ80X225-75S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it achieves a push force of 513 kgf.
The rear adjuster screw acts as a mechanical stop that trims the effective travel back from the 225 mm nominal stroke, providing a usable window of 150-225 mm. It sets the end position and relies on the air cushion for deceleration, but it does not lock the load without continuous air pressure.
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