Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 225mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke225 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10
The AirTAC SAIJ50X225-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a 982N push force at 0.5 MPa. By turning the external stopper, you can trim the nominal 225mm travel back by up to 10mm, creating a precise 215-225mm usable window. This allows exact end-position tuning at commissioning without swapping the barrel or adding external stops.
Built with a SUS420J2 stainless steel rod and PT tapered ports, this extruded aluminum unit features sensor grooves on both sides. The rear adjuster acts purely as a travel stop to set the retraction end; it does not hold the load without live air. For applications requiring position holding without continuous pressure, consider the SAIL or BSAI series.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX225-10 Is Used
Machine Changeover
Dial in the 215-225mm travel window during product size changes without disassembling the cylinder or bolting on external stops.
End-Position Tuning
Fine-tune the retraction end-point at commissioning to absorb mechanical tolerances and achieve exact positioning.
Assembly Line Conveyors
Provide adjustable stopping forces for varying product sizes, utilizing the 982N push capacity at 0.5 MPa.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10 the Right Cylinder?
Choose this 50mm bore when you need more thrust than the 40mm version (628N at 0.5 MPa) but want to avoid the bulk of a 63mm unit. The adjustable 215-225mm window is ideal for product changeovers where the exact end-stop varies slightly. If your machine requires positive load-holding, a plain SAIJ is insufficient since the rear adjuster is a stop, not a lock; you would need an external rod lock or the SAIL series.
When replacing an ISO 15552 cylinder, match the 50mm bore, 225mm stroke, 10mm adjustment, PT G1/4 ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 225mm stroke is relatively long, ensure adequate external guiding to prevent excessive side-loading on the 20mm rod.
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 SAIJ50 Adjustable Cylinder SAIJ50AX225-10 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. It can reach up to 1767N push at 0.7 MPa.
The rear adjuster screw allows you to shorten the 225mm nominal stroke by up to 10mm, giving a usable travel window of 215-225mm. The adjuster acts as a physical stop and does not lock the load without live air pressure.
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