Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10 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 SAIJ63AX325-10
The AirTAC SAIJ63X325-10 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a robust choice for mid-range actuation. The integrated rear stopper allows you to fine-tune the end position at commissioning, providing a usable travel window of 315 to 325 mm without adding external stops.
This configuration features a SUS420J2 stainless steel rod and PT tapered port threads. It includes variable air cushions at both ends to decelerate the load smoothly. Because the rear adjuster acts only as a travel stop and not a lock, the cylinder cannot hold a load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10 |
|---|---|
| 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 SAIJ63AX325-10
| 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 SAIJ63AX325-10 Is Used
Machine Changeover
Dial in the exact 315 to 325 mm end-stop during product size changes without swapping the physical cylinder or adding spacer blocks.
Press Fit Tuning
Fine-tune the retract stroke on assembly presses to compensate for material thickness variations, ensuring consistent insertion depth.
Diverting Gates
Adjust the actuation length on conveyor diverters to accommodate different package sizes on the fly, preventing jams at the end of the stroke.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX325-10 the Right Cylinder?
Selecting this 63 mm bore cylinder makes sense when a standard fixed-stroke SAI cannot accommodate minor mechanical variations or product changeovers on a line. If you need less force, stepping down to a 50 mm bore yields 982 N of push at 0.5 MPa, while stepping up to an 80 mm bore provides 2513 N. The 10 mm adjustment window is ideal for precision setups where a fixed 325 mm stroke would cause mechanical binding or require shimming.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 325 mm nominal stroke, 10 mm adjustment, PT G3/8 port, and your required mounting bracket. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 325 mm, the M16x1.5 rod should be guided externally to prevent excessive side-load wear on the seals and barrel.
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 SAIJ63AX325-10 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster screw lets you shorten the effective stroke by up to 10 mm, creating a usable travel window of 315 to 325 mm. This allows for precise end-position tuning during commissioning without replacing the cylinder.
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