Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-100S 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 SAIJ63AX325-100S
The AirTAC SAIJ63X325-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 325 mm nominal stroke by up to 100 mm. This yields a usable travel window of 225-325 mm, providing immense flexibility for end-position tuning during commissioning without swapping out the physical cylinder. It delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it well-suited for moderate-duty industrial actuation.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for seamless integration with AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side barrel grooves. The G3/8 PT tapered ports manage airflow efficiently across the 30-800 mm/s speed range, while the 36 mm air cushions handle end-of-travel deceleration.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-100S |
|---|---|
| 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 SAIJ63AX325-100S
| 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 SAIJ63AX325-100S Is Used
Machine Changeover
Quickly fine-tune the 225-325 mm travel window during product size changeovers on a packaging line without physically replacing the actuator or bolting on external stops.
Variable End Positioning
Dial in the exact retract end-position for a diverter arm on a conveyor system, accommodating varying package dimensions on the fly.
Assembly Calibration
Precisely set the engagement depth of a 1559 N press fit operation during initial commissioning, using the 100 mm adjustment range to find the perfect contact point.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-100S the Right Cylinder?
Select this 63 mm bore when your application requires a 1559 N push force at 0.5 MPa; if you need less force, a 50 mm bore offers 982 N, or step up to an 80 mm bore for 2513 N. An adjustable stroke is highly advantageous over a fixed SAI cylinder when you need variable end-stops for product-size changeovers on a single line. Because this 325 mm stroke is relatively long, ensure you use an external guide to support the load and prevent excessive side-loading on the 20 mm rod and M16x1.5 rod thread.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 325 mm stroke, 100 mm adjustment range, G3/8 PT ports, and the -S magnet. Note that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Remember that the rear adjuster is a travel stop, not a lock; for load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ63AX325-100S FAQ
The rear adjuster screw acts as an external stopper that lets you shorten the effective stroke by up to 100 mm. This means the 325 mm nominal stroke can be dialed back to any travel length down to 225 mm, allowing precise end-position tuning without changing the cylinder.
At a 0.5 MPa operating pressure, the SAIJ63X325-100-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 of push force.
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