Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-30 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 SAIJ50AX225-30
The AirTAC SAIJ50X225-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 225 mm travel that can be fine-tuned down by up to 30 mm, giving an effective usable window of 195 to 225 mm. This allows precise end-position tuning at commissioning without swapping hardware. In the 50 mm bore class, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa.
This variant features a SUS420J2 stainless steel rod for improved corrosion resistance and uses a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and because no magnet is specified, position sensing would require external switches rather than embedded CMSE or DMSE sensors. The rear adjuster acts purely as a mechanical stop and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-30 |
|---|---|
| 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 SAIJ50AX225-30
| 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 SAIJ50AX225-30 Is Used
Product Changeover
Dial in the exact end-stop for different package lengths on a packaging line using the 30 mm adjustment window, avoiding cylinder swaps.
Machine Setup
Fine-tune the retract position during initial commissioning to align tooling perfectly within the 195-225 mm travel range.
Variable End Stops
Provide adjustable physical stops for diverter arms or pushers that must handle varying product sizes on the fly.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-30 the Right Cylinder?
Choose this 50 mm bore when you need 982 N push thrust at 0.5 MPa and a mechanically variable end-stop for product changeovers. If your application requires less force, stepping down to a 40 mm bore yields 628 N push force; for heavier loads, a 63 mm bore provides 1559 N. The adjustable 195-225 mm travel window is ideal for setups needing fine-tuning without adding external stops. For load-holding without continuous air pressure, this cylinder is insufficient as the rear adjuster is only a travel stop; consider an AirTAC SAIL or BSAI locking cylinder instead.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 225 mm stroke, 30 mm adjustment range, PT G1/4 port, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This profile cylinder omits FB, CA, CB, and CR mounts. The 225 mm stroke is under the 1200 mm maximum standard for this bore, so it is a stock configuration. Its 20 mm rod and M16x1.5 thread handle moderate side loads, but any stroke over 300 mm would require an external guide to prevent rod bending.
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 SAIJ50AX225-30 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 30 mm. This creates a usable travel window of 195 to 225 mm, allowing you to fine-tune the end position without adding external stops.
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