Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 175mm 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
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50S
The AirTAC SAIJ63X175-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 175 mm stroke that can be fine-tuned backward by up to 50 mm, yielding a usable travel window of 125 to 175 mm. Delivering 1559 N of pull force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features a PT tapered port thread.
This model includes a magnet (-S) for electronic DMSE or reed CMSE position sensing along its dual-side barrel grooves. The rear adjuster functions purely as a travel stop for end-position tuning and relies on the integrated air cushion for deceleration; it does not lock the load without continuous air pressure. For load-holding requirements, consider an external rod lock or the SAIL series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAIJ63AX175-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SAIJ63AX175-50S Is Used
Product Changeovers
Dial in the exact 125 to 175 mm stroke window during line format changes without replacing hardware or adding external stopper blocks.
Variable End Stops
Ideal for diverter arms or pushers that must handle varying package sizes on the fly by simply turning the rear adjuster screw.
Machine Setup
Fine-tune the retract end-position during commissioning to achieve precise tooling alignment without mechanical shimming.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50S the Right Cylinder?
Select this 63 mm bore cylinder when an application requires 1559 N pull force at 0.5 MPa but demands variable end-stops for frequent product changeovers, avoiding the need to physically swap cylinders. If your setup requires less force, the 50 mm bore offers 825 N pull; if more force is needed, the 80 mm bore provides 2268 N. Because this is a 175 mm stroke, side-load risks are moderate, but always ensure external guiding if the load is heavy or unsupported. To match this exact ISO 15552 replacement, specify: 63 mm bore, 175 mm stroke, 50 mm adjustment, PT port, SUS420J2 rod, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63AX175-50S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of pull force and 2182 N of push force at 0.7 MPa. It operates efficiently at speeds between 30 and 800 mm/s.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective travel from the nominal 175 mm down to 125 mm. It sets the end position but does not hold the load without live air pressure.
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