Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 270mm 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
- Stroke270 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-10S
The AirTAC SAIJ50X270-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 270 mm stroke that can be fine-tuned down by up to 10 mm, giving operators a precise 260-270 mm usable travel window during commissioning. Delivering 982 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod and includes a magnet for position sensing.
This model uses PT tapered ports and features an extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure. For load-holding requirements without continuous air, an external rod lock or related types like SAIL or BSAI should be specified instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 270 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 SAIJ50AX270-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×270 | 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 SAIJ50AX270-10S Is Used
Product Changeover
Dial in the 260-270 mm travel window during format size changes without adding external stopper blocks to the machine frame.
End-Position Tuning
Fine-tune the retract end-stop during commissioning to perfect part ejection, relying on the rear screw rather than swapping cylinders.
Variable Stops
Adjust the stroke slightly on a packaging line to accommodate different carton lengths while maintaining consistent push force.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-10S the Right Cylinder?
Choose this 50 mm bore cylinder when an application requires 982 N push force at 0.5 MPa with on-the-fly end-position tuning. If less force is needed, stepping down to a 40 mm bore yields 628 N, while moving up to a 63 mm bore provides 1559 N. The adjustable 10 mm window is ideal for product changeovers where a fixed-stroke SAI cylinder would require physical shimming or swapping.
To match this ISO 15552 interchangeable cylinder exactly, specify the 50 mm bore, 270 mm stroke, 10 mm adjustment, PT ports, and the -S magnet option for CMSE reed or DMSE electronic sensors. Because the 270 mm stroke is relatively long, ensure adequate external guiding to prevent excessive side-loading on the 20 mm rod thread. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ50AX270-10S FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw allows you to shorten the 270 mm nominal stroke by up to 10 mm, creating a 260-270 mm usable travel window. It functions as a mechanical stop and does not lock the load without air pressure.
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