Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 170mm 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
- Stroke170 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-40
The AirTAC SAIJ63X170-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 130 and 170 mm without adding external stops. Delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa, it fits medium-duty positioning tasks perfectly. This specific SKU features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel.
The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches if needed later. The rear adjuster acts purely as a travel stop to set deceleration and end-position, meaning it will not hold a load without live air pressure. For applications requiring true load-holding without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 170 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 SAIJ63AX170-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×170 | 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 SAIJ63AX170-40 Is Used
Product Changeover
Dial in the 130-170 mm travel window during format changes on packaging lines without physically replacing the cylinder.
End-Stop Tuning
Precisely set the retract end-position during machine commissioning to perfect part ejection at 0.5 MPa operating pressure.
Variable Diving
Adjust the stroke depth on the fly for assembly presses that need to accommodate slightly different material thicknesses.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-40 the Right Cylinder?
Choose this 63 mm bore when your application requires the 1559 N push force at 0.5 MPa, stepping up from the 50 mm bore (982 N) for heavier payloads, or down from the 80 mm bore (2513 N) to save space. The 40 mm adjustment range is ideal for product changeovers on a packaging line, allowing rapid end-position recalibration rather than swapping out a fixed-stroke SAI cylinder. This model uses PT tapered port threads and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR mounts.
Because the 170 mm stroke is below the 300 mm threshold, side-loading from the 20 mm rod and M16x1.5 thread is manageable, though an external guide is still recommended for heavy lateral loads. If you need to hold a vertical load during an air-loss event, do not rely on the rear stopper or the air cushions; integrate an external rod lock or pilot-operated check valve.
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 SAIJ63AX170-40 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder 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.
The rear adjuster screw lets you shorten the effective travel from the nominal 170 mm down to 130 mm. It functions as a mechanical stop to tune the end-position and deceleration, but it does not lock the load without live air pressure.
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