Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30S
The AirTAC SAIJ63X350-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 320-350 mm usable travel window, letting you trim up to 30 mm off the 350 mm nominal stroke during commissioning. Delivering 2182 N of push force at 0.7 MPa, it handles robust actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for position detection.
This model features a SUS420J2 stainless steel rod (option A) for superior corrosion resistance compared to standard carbon steel. It uses PT tapered ports sized G3/8 and supports operating speeds of 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to fine-tune the end position; it does not lock or hold the load without continuous air pressure. For load-holding requirements, consider the SAIL or BSAI series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 350 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 SAIJ63AX350-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×350 | 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 SAIJ63AX350-30S Is Used
Product Changeover Tuning
Dial in the exact end-stop position within the 320-350 mm window during packaging line format changes without swapping out the entire actuator.
Machine Setup Calibration
Fine-tune the retract end position at commissioning to perfect a pressing or locating operation, absorbing mechanical tolerances easily.
Variable End-Stop Diverter
Adjust the travel distance on the fly for a diverter arm handling different package sizes, ensuring precise routing without external stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30S the Right Cylinder?
Choose this 63 mm bore when you need 2182 N push force at 0.7 MPa, stepping up from a 50 mm bore that provides 1374 N. The adjustable stroke is ideal for product changeovers where exact end-of-travel positioning varies slightly, eliminating the need to physically swap cylinders or add external stopper blocks. If your application requires holding a load vertically without live air pressure, note that this standard SAIJ adjuster only decelerates travel; you would need an external pilot-operated check valve or the related SAIL lock cylinder.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 350 mm stroke, 30 mm adjustment range, PT G3/8 ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 350 mm stroke is relatively long, ensure you use an external guide to prevent excessive side loading on the M16x1.5 rod thread.
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 SAIJ63AX350-30S FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder provides 2182 N of push force and 1402 N of pull force. The maximum thrust is 318 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 350 mm down to 320 mm. It only sets the travel end and does not lock the load without live air pressure.
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