Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 270mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40
The AirTAC SAIJ63X270-40 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 1559 N push force at 0.5 MPa, utilizing a 20 mm piston rod and G3/8 porting to handle demanding pneumatic tasks. By turning the rear screw, you achieve a usable travel window of 230 to 270 mm, enabling precise end-position tuning at commissioning without swapping out the entire unit.
This specific configuration features an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance alongside PT tapered port threads. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing for direct mounting of AirTAC CMSE reed or DMSE electronic sensors if position feedback is later required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40 Is Used
Product Changeover
Quickly reconfigure the 230-270 mm retraction end-stop for varying product lengths on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the final end position during initial commissioning to achieve perfect alignment, avoiding the need for external shims.
Variable End Stops
Dial in the exact clamping depth on automated fixtures where slight adjustments are needed for different material thicknesses.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40 the Right Cylinder?
Selecting this 63 mm bore cylinder makes sense when your application requires the 1559 N push force at 0.5 MPa, stepping up from a 50 mm bore that provides 982 N. The adjustable 230-270 mm window is ideal for product changeovers on a line, letting you dial in the exact retraction stop without adding external physical stops. For higher force needs, an 80 mm bore yields 2513 N. Since the 270 mm stroke is substantial, ensure you provide an external guide to support the load and mitigate side-loading on the rod.
This model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder. To match this exact unit for an ISO 15552 replacement, specify the 63 mm bore, 270 mm stroke, 40 mm adjustment, PT ports, SUS420J2 rod, 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-40 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster screw allows you to trim the effective stroke within a 230 to 270 mm window. It functions as a mechanical stop to set the retraction end position, but it is not a lock and will not hold the load without continuous air pressure.
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