Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-30 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 SAIJ63AX270-30
The AirTAC SAIJ63X270-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 240-270 mm, allowing you to dial back the nominal 270 mm stroke by up to 30 mm during machine setup. Delivering a push force of 1559 N at 0.5 MPa, it handles mid-range automation tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This SKU is configured with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features PT tapered port threads (G3/8). The M16x1.5 rod thread and 20 mm rod diameter provide robust resistance to side loading. The rear adjustment screw acts purely as a mechanical stop to set the retract end-position, meaning it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-30 |
|---|---|
| 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 SAIJ63AX270-30
| 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 SAIJ63AX270-30 Is Used
Product Changeovers
Quickly adjust the effective stroke from 240 to 270 mm to accommodate varying product sizes on a single production line without mechanical modifications.
Commissioning Fine-Tuning
Dial in the exact retract end-position during machine setup to perfect timing and positioning without replacing the cylinder.
Variable End-Stops
Set precise mechanical stops for automated processes, ensuring repeatable positioning even if sensor placement shifts slightly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-30 the Right Cylinder?
Choose this 63 mm bore when you need 1559 N of push force at 0.5 MPa. If your application requires less force, stepping down to a 50 mm bore yields 982 N, while moving up to an 80 mm bore provides 2513 N. The adjustable stroke is ideal for product changeovers or fine-tuning end positions at commissioning without swapping out the entire cylinder or adding external stops, unlike a fixed-stroke SAI cylinder.
Because the 270 mm stroke is moderately long, ensure adequate support to prevent rod sag and excessive side loads. As an ISO 15552 cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders using the same 63 mm bore, 270 mm stroke, 30 mm adjustment, PT G3/8 port, and standard mounting interface. Note that SAIJ uses a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It does not support FB, CA, CB, or CR mounts.
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 SAIJ63AX270-30 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides a push force of 1559 N and a pull force of 1402 N. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 270 mm down to 240 mm, creating a 30 mm adjustable window. The screw acts as a mechanical stop for the retract end-position and does not function as a lock or brake.
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