Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-20
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-20 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 SAIJ50AX270-20
The AirTAC SAIJ50X270-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 20 mm of end-position tuning. This yields a usable travel window of 250-270 mm, allowing precise calibration during commissioning without adding external stops. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa.
Built with a SUS420J2 stainless steel rod (code A) and PT tapered port threads, this unit is designed for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic sensors. It supports a subset of ISO mounts—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting FB, CA, CB, and CR.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-20 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-20 |
|---|---|
| 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 SAIJ50AX270-20
| 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 SAIJ50AX270-20 Is Used
Machine Changeover
Dial in the 250-270 mm travel window during product size transitions without physically swapping the cylinder.
End-Stop Calibration
Fine-tune the retract position during commissioning to perfect the mechanical stop without adding external spacers.
Assembly Positioning
Set precise lower-end travel limits for pressing or locating tasks using the rear adjustment screw.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-20 the Right Cylinder?
Select this 50 mm bore adjustable-stroke cylinder when an application requires 982 N of thrust at 0.5 MPa but demands variable end-stop positioning. If you need less force, the 40 mm bore offers 628 N; if your load requires more, stepping up to the 63 mm bore provides 1559 N. The rear adjuster acts strictly as a mechanical stop for deceleration and positioning, not a lock. For load-holding without live air pressure, consider the SAIL or BSAI series. Because the 270 mm stroke is substantial, always guide the rod externally to prevent side-load damage. To match this ISO 15552 replacement, specify: 50 mm bore, 270 mm stroke, 20 mm adjustment, PT port, and no magnet.
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 SAIJ50AX270-20 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 lets you shorten the 270 mm nominal stroke by up to 20 mm, creating a 250-270 mm usable travel window. It functions as a travel stop and does not hold the load without live air.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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