Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX190-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX190-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 190mm 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
- Stroke190 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX190-50
The AirTAC SAIJ63X190-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 190 mm stroke back by up to 50 mm. This yields a usable travel window of 140 to 190 mm, enabling precise end-position tuning at commissioning without swapping hardware. It delivers 1559 N push and 1402 N pull thrust at 0.5 MPa, scaling up to 2805 N push at 0.9 MPa.
This unit is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic sensors. The rear adjuster acts purely as a mechanical stop to set deceleration and travel endpoints, meaning it cannot hold a load without continuous live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX190-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX190-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 190 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 SAIJ63AX190-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×190 | 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 SAIJ63AX190-50 Is Used
Product Changeover
Dial in the 140-190 mm travel window during format changes on packaging lines, eliminating the need to physically swap out cylinders for different carton sizes.
End-Position Tuning
Fine-tune the retract stroke at machine commissioning to perfectly mate with mechanical stops, absorbing minor dimensional variances without external shims.
Adjustable Ejection
Vary the ejection distance on an assembly press by up to 50 mm, allowing operators to clear different part geometries from the tooling area safely.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX190-50 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (982 N push at 0.5 MPa) is too weak, but an 80 mm bore (2513 N push at 0.5 MPa) is oversized. The 50 mm adjustment range is ideal for machines handling multiple product sizes, allowing operators to dial in the exact end-stop during changeover rather than installing external stops. For fixed-travel needs, a standard SAI cylinder is simpler.
If your application requires holding a load in place without live air, note that this cylinder's adjuster is a stop, not a lock; you would need an SAIL pneumatic lock or an external pilot-operated check valve. To match this ISO 15552 replacement exactly, specify: 63 mm bore, 190 mm stroke, 50 mm adjustment, PT G3/8 ports, SUS420J2 rod, and no magnet. The 190 mm stroke is under the 300 mm threshold, but always ensure proper mounting support to mitigate rod side-loads.
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 SAIJ63AX190-50 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.9 MPa, the push force increases to 2805 N. The operational speed range is 30-800 mm/s.
The rear adjuster screw lets you shorten the effective travel from the nominal 190 mm down to 140 mm, creating a 50 mm adjustable window. This stopper only sets the travel end and deceleration; it does not lock or hold the load without live air pressure.
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