Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 145mm 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
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30S
The AirTAC SAIJ63X145-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a 1559N push force at 0.5 MPa. Its external stopper allows you to fine-tune the end position, creating a usable travel window between 115 and 145 mm. The extruded aluminum barrel features sensor grooves on both sides for straightforward position detection.
This configuration includes a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and a magnet for use with AirTAC CMSE reed and DMSE electronic sensors. It uses a G3/8 port and M16x1.5 rod thread, while the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 145 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 SAIJ63AX145-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×145 | 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 SAIJ63AX145-30S Is Used
Stroke Tuning at Commissioning
Dial in the exact retract end-position within the 115-145 mm window during machine setup without adding external stops.
Product Size Changeover
Quickly adapt the cylinder travel distance on a packaging line when running a different package size.
Precision End-Stop Setting
Use the rear adjuster to set a hard mechanical stop, fine-tuning the stroke for precise assembly operations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30S the Right Cylinder?
Choose this 63mm bore when a 50mm bore (982N push at 0.5 MPa) lacks the necessary thrust, but a step up to an 80mm bore (2513N push) would be excessive. The adjustable stroke is ideal for machine setups requiring precise end-position tuning during commissioning or product changeover, avoiding the need to swap out a fixed-stroke SAI cylinder.
For load-holding without continuous air pressure, this adjuster will not suffice; consider an AirTAC SAIL or BSAI cylinder instead. As a dimensionally interchangeable ISO 15552 cylinder, it matches replacements on bore, 145mm stroke, 30mm adjustment, PT tapered ports, and the -S magnet option. At 145mm stroke, side-load is minimal, but external guides are recommended for any unsupported loads.
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 SAIJ63AX145-30S FAQ
At 0.5 MPa, this 63mm bore cylinder provides a push force of 1559N and a pull force of 1402N. At 0.7 MPa, the push force increases to 2182N.
The rear adjuster allows you to shorten the 145mm nominal stroke by up to 30mm, giving an adjustable travel window of 115-145mm. It functions as a travel stop for end-position tuning and does not lock or hold the load without live air.
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