Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50 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 SAIJ63AX170-50
The AirTAC SAIJ63X170-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 120-170 mm usable travel window by allowing you to dial back the 170 mm nominal stroke by up to 50 mm. In the 63 mm bore class, it delivers 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa, making it well-suited for moderate-to-heavy actuation tasks.
This model uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered G3/8 port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear adjuster functions strictly as a travel stop to decelerate and set the end position, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50 |
|---|---|
| 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 SAIJ63AX170-50
| 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 SAIJ63AX170-50 Is Used
End-Position Tuning
Dial in the exact retract distance within the 120-170 mm window during machine commissioning without installing external mechanical stops.
Product Changeover
Quickly adjust the stroke length on automated lines when processing different product sizes, minimizing downtime between runs.
Assembly Actuation
Provides 1559 N of pulling force at 0.5 MPa for pressing or clamping operations where the final end-stop needs precise field calibration.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50 the Right Cylinder?
Choose this adjustable-stroke cylinder when your machine setup requires commissioning fine-tuning or frequent product-size changeovers, allowing you to shift the end-stop without swapping the cylinder or adding external stops. If you need less force, stepping down to a 50 mm bore yields 825 N of pull at 0.5 MPa; for higher force, an 80 mm bore provides 2268 N of pull. Since the 170 mm stroke is under 300 mm, side-load stress is moderate, but the 20 mm rod diameter still requires an external guide for heavy lateral loads.
For ISO 15552 dimensionally interchangeable replacements, match the 63 mm bore, 170 mm stroke, 50 mm adjustment, PT G3/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. This SKU does not include a magnet, so it cannot host CMSE or DMSE sensors without a -S variant. If your application requires true load-holding without live air, consider the SAIL or BSAI series instead.
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 SAIJ63AX170-50 FAQ
It features a rear adjusting screw that acts as a stopper, allowing you to shorten the effective travel from the 170 mm nominal stroke down to a minimum of 120 mm. This provides a 50 mm adjustable window for fine-tuning the end position at commissioning.
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of pull force and 1402 N of push force. At 0.7 MPa, the push force increases to 2182 N.
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