Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20S
The AirTAC SAIJ63X290-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, enabling you to dial back the nominal 290 mm travel to a precise 270-290 mm window during commissioning. Delivering a robust 1402 N pull force at 0.5 MPa, it handles mid-range actuation with ease. The built-in magnet supports position sensing via CMSE reed or DMSE electronic switches.
This variant features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and pairs with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster acts purely as a travel stop to fine-tune the end position without holding the load pneumatically.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 290 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 SAIJ63AX290-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×290 | 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 SAIJ63AX290-20S Is Used
Machine Changeover
Dial in the 270-290 mm travel window during format size changes on packaging lines without replacing the cylinder or adding external stopper blocks.
End-Position Trimming
Fine-tune the retract end position by up to 20 mm during commissioning to perfectly seat parts, compensating for mechanical tolerance stack-up.
Variable Diverter Stop
Adjust the stopping depth for varying product lengths on a conveyor belt, using the rear screw to set the exact 270 to 290 mm retract point.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20S the Right Cylinder?
Choose this 63 mm bore when a 50 mm cylinder (982 N push at 0.5 MPa) lacks thrust but an 80 mm bore (2513 N push) is physically oversized. The 20 mm adjustment range is ideal for product changeovers where the exact end-of-stroke varies slightly, eliminating the need to physically swap a fixed-stroke SAI cylinder. For applications requiring the load to be held mechanically without live air pressure, this cylinder's adjuster is not a lock; you would need to step up to an SAIL or BSAI series instead.
Because the 290 mm stroke is substantial, the 20 mm diameter rod will experience bending under heavy lateral loads. Always guide the load externally to prevent rod damage. This model is dimensionally interchangeable with ISO 15552 cylinders and uses the SAIJ mounting subset: 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 SAIJ63AX290-20S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 20 mm, creating a usable travel window of 270-290 mm. It acts as a mechanical stop at the retract end and does not lock the load without live air pressure.
At 0.5 MPa it provides 1559 N of push force and 1402 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 318 kgf of thrust.
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