Airtac SAIJ50 Adjustable Cylinder SAIJ50X325-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50X325-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 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 SAIJ50 Adjustable Cylinder SAIJ50X325-30
The AirTAC SAIJ50X325-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 325 mm nominal stroke that can be fine-tuned backward by up to 30 mm, yielding a usable travel window of 295-325 mm. Delivering 982 N of push thrust at 0.5 MPa, it fits perfectly into mid-range pneumatic setups requiring precise end-position calibration.
This model features a standard carbon steel piston rod and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop to set the retraction end position and does not lock the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50X325-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50X325-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 325 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 SAIJ50X325-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×325 | 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 SAIJ50X325-30 Is Used
Machine Changeover
Dial in the exact end-stop position during product size changeovers by adjusting the rear screw up to 30 mm, keeping the 325 mm nominal stroke intact.
End-Position Tuning
Fine-tune the retraction travel window to 295-325 mm at commissioning to compensate for mechanical wear or sensor drift without external shims.
Variable End Stops
Set precise retract limits on automated assembly lines where multiple product variants require slightly different stroke endings on the same fixture.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50X325-30 the Right Cylinder?
Choose this 50 mm bore cylinder when your application requires 982 N of push force at 0.5 MPa, bridging the gap between the 40 mm bore (628 N) and the 63 mm bore (1559 N) options. The 30 mm adjustment range is ideal for machine changeovers, allowing you to trim the 325 mm stroke down to 295 mm without swapping the cylinder or adding external stops. Because the nominal stroke is 325 mm, an external guide is recommended to prevent excessive side-loading on the unsupported rod.
For ISO 15552 replacement matching, ensure your setup accommodates a 50 mm bore, 325 mm stroke, a 30 mm adjustment range, PT port threads, and the standard carbon steel rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR footprints. If your system requires positive load-holding without live air, consider the SAIL or BSAI series instead, as the SAIJ adjuster is not a brake.
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 SAIJ50X325-30 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push thrust and 825 N of pull thrust. 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 trim the effective travel back by up to 30 mm, creating a usable stroke window of 295-325 mm. It sets the end position but does not hold the load without live air pressure.
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