Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30S 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 SAIJ50AX270-30S
The AirTAC SAIJ50X270-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 270 mm stroke that can be fine-tuned down by up to 30 mm, creating a precise 240-270 mm usable travel window. Delivering 982 N of push force at 0.5 MPa, it bridges the gap between smaller 40 mm bores and heavier 63 mm units.
This variant includes a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and ships with a magnetic piston (-S) for position detection. The extruded aluminum barrel features sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic solid-state switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30S |
|---|---|
| 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 SAIJ50AX270-30S
| 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 SAIJ50AX270-30S Is Used
Product Changeover
Dial in the 240-270 mm travel window during format size changes on packaging lines without replacing the cylinder or adding external shims.
End-Stop Calibration
Fine-tune the exact retract position during machine commissioning to perfect part ejection or clamping depth on the fly.
Variable Positioning
Adjust the stroke end-point for diverter gates or pushers handling different carton lengths on a shared conveyor system.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-30S the Right Cylinder?
Select this 50 mm bore when an application requires approximately 982 N push force at 0.5 MPa but needs on-machine adjustability rather than a fixed 270 mm SAI cylinder. The rear screw stopper allows you to trim the end position during commissioning or product changeover without swapping hardware. For lower force needs, a 40 mm bore provides 628 N; for higher loads, a 63 mm bore yields 1559 N. Because the total stroke is 270 mm, ensure external guiding is used to prevent excessive side-loading on the M16x1.5 rod thread.
The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. If your setup requires true load-holding in the event of air loss, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock. This SAIJ50X270-30-S uses PT tapered port threads and a G1/4 air connection, making it dimensionally interchangeable with other ISO 15552 cylinders.
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 SAIJ50AX270-30S 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 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from its 270 mm nominal length down to 240 mm. It decelerates the travel end but does not lock the load without continuous air pressure.
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