Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75S
The AirTAC SAIJ63X180-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 180 mm stroke and a 75 mm adjustment range, it provides a usable travel window of 105 to 180 mm. This allows you to fine-tune the retract end-position during commissioning without adding external stops. In the 63 mm bore class, it delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa.
This variant includes an integrated magnet (-S) for use with AirTAC CMSE reed and DMSE solid-state sensors mounted in the dual-side barrel grooves. It features a SUS420J2 stainless steel rod for improved corrosion resistance and uses PT tapered port threads (G3/8). The rear adjuster acts purely as a mechanical stop to set the travel end and does not lock the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 180 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 SAIJ63AX180-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×180 | 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 SAIJ63AX180-75S Is Used
Product Changeover
Dial the stroke back by up to 75 mm to accommodate varying package sizes on a packaging line without physically replacing the cylinder.
Machine Setup
Fine-tune the exact retract end-position during commissioning to align tooling perfectly, using the rear stopper instead of external shims.
Variable End-Stop
Set a precise 105 mm travel limit for a pressing operation while retaining the ability to return to the full 180 mm stroke for future tooling.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75S the Right Cylinder?
Choose this 63 mm bore when a 40 mm bore (628 N push at 0.5 MPa) lacks the required thrust, but an 80 mm bore (2513 N push) would be excessive. The 75 mm adjustment range is ideal for machines handling frequent product-size changeovers, allowing the stroke to be dialed back by up to 75 mm rather than swapping the entire cylinder for a shorter standard SAI unit. Because the nominal stroke is 180 mm, an external guide is not strictly required for side-load management, though the M16x1.5 rod thread handles standard loads well. For applications requiring the load to be held in place without continuous air pressure, note that the SAIJ adjuster is a stop and not a lock; consider an AirTAC SAIL or BSAI cylinder instead. To match this ISO 15552 interchangeable cylinder, specify: 63 mm bore, 180 mm stroke, 75 mm adjustment, PT G3/8 port, SUS420J2 rod, and a -S 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 SAIJ63AX180-75S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 75 mm. This gives the SAIJ63X180-75-S an adjustable travel window of 105 to 180 mm, enabling fine-tuning of the end position without changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ63X180-75-S provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
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