Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-50 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 SAIJ63AX270-50
The AirTAC SAIJ63X270-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 270 mm nominal stroke by up to 50 mm for a usable travel window of 220-270 mm. This on-the-fly tuning is ideal for machine setup and product changeovers, eliminating the need to swap cylinders or bolt on external stops. It delivers a robust 1559 N pull force at 0.5 MPa, matching the standard SAI thrust class.
This SKU features a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear adjuster acts purely as a travel stop to set deceleration and end-positions, so it will not hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-50 |
|---|---|
| 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 SAIJ63AX270-50
| 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 SAIJ63AX270-50 Is Used
Variable End-Stop Tuning
Dial in the exact 220-270 mm travel distance during commissioning without changing the cylinder or adding external mechanical stops.
Product Changeover
Quickly adjust the rear stopper by up to 50 mm to accommodate different product lengths on the same production line.
Machine Setup
Fine-tune the retract end-position to perfect picking and placing motions during initial equipment assembly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-50 the Right Cylinder?
Choose this 63 mm bore when your application requires the 1559 N pull force at 0.5 MPa, stepping up from a 50 mm bore that provides 825 N. The 50 mm adjustment range is selected when a process demands a highly variable end-stop for frequent product size changes. Because the nominal stroke is 270 mm, an external guide is recommended to manage side loads over this extended travel.
For a drop-in ISO 15552 replacement, match the 63 mm bore, 270 mm stroke, 50 mm adjustment, PT ports, and SUS420J2 rod. If your setup requires true load-holding without live air, select the SAIL or BSAI series instead, as this cylinder's adjuster is not a lock.
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 SAIJ63AX270-50 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. It can reach a maximum push force of 318 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the 270 mm nominal stroke by up to 50 mm, creating a usable travel window of 220-270 mm. This mechanism acts as a travel stop and does not lock or hold the load without continuous air pressure.
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