Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 275mm 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
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-50S
The AirTAC SAIJ63X275-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 225-275 mm usable travel window, allowing you to dial back the nominal 275 mm stroke by up to 50 mm during commissioning. Delivering 1559 N of push force at 0.5 MPa, it fits mid-range automation tasks perfectly.
This variant features an SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a magnet for position sensing. You can mount CMSE reed or DMSE electronic switches directly into the sensor grooves on both sides of the extruded aluminum barrel. The PT tapered port threads ensure a tight, reliable pneumatic connection.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 275 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 SAIJ63AX275-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×275 | 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 SAIJ63AX275-50S Is Used
Machine Changeover
Quickly reconfigure the retract end position for different product sizes on a packaging line without replacing the cylinder.
End-Position Tuning
Fine-tune the 225-275 mm travel window during setup to achieve exact seating forces without machining hard stops.
Assembly Station Actuation
Provides 1559 N of push force at 0.5 MPa for pressing or clamping parts, with DMSE sensors confirming position.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-50S the Right Cylinder?
Choose this 63 mm bore when you need more thrust than a 50 mm cylinder (which yields 982 N push at 0.5 MPa) but want to avoid the bulk of an 80 mm unit. The adjustable stroke is ideal for product changeovers, letting you fine-tune the retract end position without adding external stops or swapping cylinders. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding, consider an SAIL or BSAI cylinder.
To replace an ISO 15552 cylinder, match the 63 mm bore, 275 mm stroke, 50 mm adjustment, G3/8 PT port, and -S magnet. Because the 275 mm stroke is relatively long, ensure adequate external guiding to prevent excessive side-loading on the 20 mm rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ63AX275-50S 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 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 275 mm down to 225 mm. It functions as a mechanical stop to set the retract position and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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