Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-30S 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 SAIJ63AX325-30S
The AirTAC SAIJ63X325-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 295 to 325 mm. Delivering 1559 N of push thrust at 0.5 MPa, it handles robust actuation tasks while featuring a SUS420J2 stainless steel rod for enhanced corrosion resistance. The integrated magnet supports position sensing via CMSE reed and DMSE electronic switches.
This adjustable-stroke variant allows operators to fine-tune the retract end-position at commissioning without swapping hardware. The extruded aluminum barrel includes sensor grooves on both sides, and the design omits the FB, CA, CB, and CR mounts, utilizing a reduced interface set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-30S |
|---|---|
| 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 SAIJ63AX325-30S
| 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 SAIJ63AX325-30S Is Used
Machine Changeover
Dial in the exact 295-325 mm end-position during product size transitions without physically replacing the actuator on the line.
End-Stop Tuning
Fine-tune the retract travel limit at commissioning to perfect the positioning of a 1559 N push force assembly.
Corrosion-Resistant Actuation
Leverage the SUS420J2 stainless steel rod and 325 mm travel in manufacturing environments requiring consistent pneumatic thrust.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-30S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore falls short—delivering only 982 N of push force at 0.5 MPa—and step up if you require 1559 N. The 30 mm adjustment range is ideal for dialing in exact end-stops during machine setup or product changeover, eliminating the need to bolt on external stops compared to a fixed SAI cylinder. Because the rear screw acts only as a travel stop and the air cushion handles deceleration, this cylinder will not hold a load without live air; for true fail-safe load holding, select the SAIL or BSAI series. At a 325 mm stroke, the 20 mm rod diameter and M16x1.5 thread provide rigidity, but an external guide is recommended to prevent side-load wear on the seals. To match this ISO 15552 footprint, specify the 63 mm bore, 325 mm stroke, 30 mm adjust, PT tapered ports, and the -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 SAIJ63AX325-30S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push thrust and 1402 N of pull thrust. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear adjuster screw allows you to shorten the nominal 325 mm stroke by up to 30 mm, creating a usable travel window of 295 to 325 mm. This stopper sets the end position but does not lock the load without live air pressure.
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