Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50 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 SAIJ50AX270-50
The AirTAC SAIJ50X270-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push force at 0.5 MPa. By turning the external stopper screw, you can trim the nominal 270mm travel back by up to 50mm, creating a precise 220-270mm usable window. This allows exact end-position tuning at commissioning without swapping hardware. It features a SUS420J2 stainless steel rod for corrosion resistance and uses PT tapered ports.
Because this is a profile cylinder with an extruded aluminum barrel, it includes sensor grooves on both sides. Without a magnet specified, it runs blind, but the grooves remain ready for future CMSE reed or DMSE electronic switches if retrofitted. The rear adjuster acts purely as a mechanical stop to set the travel end, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50 |
|---|---|
| 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 SAIJ50AX270-50
| 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 SAIJ50AX270-50 Is Used
Product Changeover
Quickly dial the stroke back from 270mm to 220mm when running a shorter product variant on the line, avoiding physical cylinder swaps.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve exact seating without machining external spacers.
Variable End Positioning
Accommodate multiple material lengths in a clamping station by adjusting the rear stopper within the 50mm window.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50 the Right Cylinder?
Choose this 50mm bore when you need more thrust than a 40mm cylinder (628N push at 0.5 MPa) but want to avoid the bulk of a 63mm unit (1559N). The 50mm adjustment range is ideal for product-size changeovers on a line, letting you dial in a new end-stop quickly instead of adding external stops. For load-holding without live air, this adjuster is not a lock; you would need an external pilot-operated check valve or a SAIL lock cylinder.
To match this ISO 15552 replacement exactly, specify: 50mm bore, 270mm stroke, 50mm adjustment, PT port thread, SUS420J2 rod material, and no magnet. Since the 270mm stroke is moderately long, ensure external guiding is used to prevent side-loading damage to the 20mm rod. Mounting options include 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 SAIJ50AX270-50 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 270mm nominal stroke down to 220mm. It sets the end position but does not lock the load without live air pressure.
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