Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30 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
- 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 SAIJ50AX270-30
The AirTAC SAIJ50X270-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 270 mm nominal travel by up to 30 mm for a precise 240-270 mm usable window. Delivering 982 N of push force at 0.5 MPa, it bridges the gap between smaller 40 mm bores and larger 63 mm units. The extruded aluminum barrel features sensor grooves on both sides, though this specific configuration omits the internal magnet.
This variant utilizes a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning; it does not lock the load without continuous air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30 |
|---|---|
| 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 SAIJ50AX270-30
| 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 SAIJ50AX270-30 Is Used
Product Changeovers
Quickly adapt the 240-270 mm end-stop for different product lengths on a packaging line without changing the physical cylinder mounting.
End-Position Tuning
Fine-tune the retract stroke during machine commissioning to achieve exact positioning without adding external mechanical stops.
Assembly Stations
Utilize the 982 N push force to drive pressing and joining operations where the final bottoming position requires slight adjustment.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30 the Right Cylinder?
Selecting this 50 mm bore makes sense when an application requires moderate thrust—such as the 982 N push force at 0.5 MPa—without stepping up to the heavier 63 mm bore. The adjustable 240-270 mm travel window is ideal for machine setups requiring product changeovers, eliminating the need to physically swap cylinders or bolt on external stops. If your setup requires position holding without live air pressure, this cylinder's adjuster will not function as a lock, meaning a SAIL or BSAI variant would be necessary.
When replacing an ISO 15552 cylinder, ensure you match the 50 mm bore, 270 mm stroke, 30 mm adjustment range, and PT tapered port threads. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories. Because the 270 mm stroke is moderately long, ensure adequate external guiding to prevent excessive side-loading on the SUS420J2 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 SAIJ50AX270-30 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 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 allows you to shorten the 270 mm nominal stroke by up to 30 mm, creating a 240-270 mm travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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