Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-40S 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 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 SAIJ80X225-40S
The AirTAC SAIJ80X225-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 40 mm of end-position tuning. This yields a usable travel window of 185 to 225 mm, enabling precise retract stops without adding external physical stops. It delivers robust thrust, pushing 2513 N and pulling 2268 N at 0.5 MPa.
Equipped with a -S magnet, this carbon-rod unit supports position sensing via CMSE reed or DMSE electronic solid-state switches in its dual sensor grooves. The SAIJ series utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Fluid must be filtered air, operating between 0.15 and 1.0 MPa.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-40S |
|---|---|
| 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 | 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 SAIJ80X225-40S
| 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 SAIJ80X225-40S Is Used
Machine Changeover
Dial in the 185-225 mm retract window during product size changes to set new end positions without physically swapping cylinders or adding external stopper blocks.
End-Position Tuning
Fine-tune the final retract position during commissioning to compensate for mechanical tolerance buildup across the tooling line.
Assembly Presses
Leverage the 2513 N push force at 0.5 MPa for pressing operations, using the 40 mm adjustment to regulate the exact depth of travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-40S the Right Cylinder?
Choose this 80 mm bore if your application requires the 2513 N push force at 0.5 MPa, stepping up from a 50 mm bore that yields 982 N. The adjustable stroke is ideal for machine setup and product changeover, allowing you to fine-tune the end position on the fly rather than swapping to a fixed-stroke SAI cylinder. Because the 225 mm stroke exceeds 300 mm is not met here, standard side-load precautions apply, but always guide long unsupported rods to prevent premature wear.
For load-holding applications, note that the rear adjuster acts only as a travel stop and the air cushions provide deceleration, neither will maintain position without live air pressure. For true locking, consider the SAIL or BSAI series. To replace an ISO 15552 cylinder, match the 80 mm bore, 225 mm stroke, 40 mm adjustment, PT tapered port, and -S magnet.
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 SAIJ80X225-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the nominal 225 mm stroke by up to 40 mm, creating a usable travel window of 185 to 225 mm. It acts as a mechanical stop and does not lock the load without live air.
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