Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 325mm 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
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10S
The AirTAC SAIJ63X325-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 10 mm. This creates a precise 315-325 mm usable stroke window, enabling fine end-position tuning at commissioning without swapping out the barrel or adding external stops. It delivers a robust 1559 N push force at 0.5 MPa, making it well-suited for moderate-load handling tasks.
This variant is equipped with a SUS420J2 stainless steel rod for improved corrosion resistance and includes a built-in magnet for CMSE reed and DMSE electronic sensors. Because the 325 mm stroke is long relative to the 20 mm rod diameter, external guiding is recommended to prevent excessive side-load wear. 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 SAIJ63AX325-10S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 325 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 SAIJ63AX325-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×325 | 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 SAIJ63AX325-10S Is Used
Machine Changeover
Dial in the 315-325 mm travel window during product size transitions on a packaging line without physically swapping the cylinder.
End-Stop Calibration
Fine-tune the retract end position by up to 10 mm during commissioning to perfect the seating of parts without adding external stops.
Variable End Positioning
Adjust the travel end-stop on the fly for processes that require minor stroke tweaks to accommodate varying material thicknesses.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10S the Right Cylinder?
Select this 63 mm bore cylinder when a standard 325 mm stroke needs exact end-position calibration during machine setup or product changeover. If your application requires less force, stepping down to a 50 mm bore yields 982 N at 0.5 MPa; conversely, stepping up to an 80 mm bore provides 2513 N. Choose this adjustable SAIJ model over a fixed-stroke SAI when you need on-the-fly stop tuning rather than a rigid hard stop.
For an exact ISO 15552 replacement, match the 63 mm bore, 325 mm stroke, 10 mm adjustment range, PT tapered port thread, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster and air cushions only decelerate the travel end; they do not lock the load. For true position holding without live air, consider the SAIL or BSAI series instead.
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 SAIJ63AX325-10S FAQ
The rear adjuster acts as an external stop that allows you to shorten the effective stroke by up to 10 mm, providing a usable travel window of 315 to 325 mm. It sets the end position but does not lock the load without live air pressure.
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 318 kgf.
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