Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20S
The AirTAC SAIJ63X180-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, featuring a 160-180 mm usable travel window. It delivers 1559 N of pull force and 2182 N of push force at 0.7 MPa. Equipped with a SUS420J2 stainless steel rod (option A), it handles harsher environments better than standard carbon steel. The integrated magnet (-S) pairs directly with AirTAC CMSE reed and DMSE solid-state sensors in the dual-side barrel grooves.
The 20 mm rear adjustment screw lets you dial in the retract end-position during commissioning without adding external stops. This adjuster functions strictly as a travel stop, not a lock; it cannot hold a load without live air. For load-holding without pressure, consider the SAIL or BSAI series. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 180 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 SAIJ63AX180-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×180 | 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 SAIJ63AX180-20S Is Used
End-Position Tuning
Dial in the exact 160-180 mm retract position during machine commissioning to perfect product seating without swapping cylinders.
Product Changeover
Quickly adapt the stroke window on packaging lines when running different package sizes, minimizing downtime between batches.
Assembly Actuation
Provide 1559 N pull force for pressing and clamping operations, using the rear stop to account for material thickness variations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20S the Right Cylinder?
Choose this 63 mm bore when you need 1559 N pull force at 0.5 MPa and a variable end-stop for product changeovers. If your process requires less force, the 50 mm bore provides 825 N pull; if you need more, the 80 mm bore yields 2268 N. The PT tapered port threads match standard pneumatic fittings, while the M16x1.5 rod thread and 20 mm rod diameter provide robust side-load resistance for this 180 mm stroke.
Because the stroke is under 300 mm, side-load stress is manageable, but long unsupported loads still need an external guide. The SAIJ is dimensionally interchangeable per ISO 15552, making it a direct drop-in for matching ISO 15552 cylinders. Select this adjustable model over a fixed SAI when you need on-the-fly end-position tuning rather than a rigid stroke.
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 SAIJ63AX180-20S FAQ
At 0.5 MPa, it provides 1559 N of pull force and 2182 N of push force. At 0.7 MPa, the pull force is 1402 N and push force is 2182 N.
The rear adjuster screw allows you to shorten the 180 mm nominal stroke by up to 20 mm, creating a 160-180 mm usable travel window. It acts as a mechanical stop and does not lock the load without air pressure.
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Standard models usually ship in 3-4 days.
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