Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-10
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-10
The AirTAC SAIJ63X280-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 280 mm travel back by up to 10 mm, creating a precise 270-280 mm usable window. This fine-tuning capability is ideal for dialing in end positions during commissioning without adding external stops. It delivers 1559 N of push thrust at 0.5 MPa and 2182 N at 0.7 MPa.
This unit is built with a SUS420J2 stainless steel rod (option A) for superior corrosion resistance compared to standard carbon steel. It features PT tapered port threads (G3/8) and dual sensor grooves on the extruded aluminum barrel for mounting CMSE reed or DMSE electronic sensors. The rear adjuster acts purely as a travel stop to set deceleration, so it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-10 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 280 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 SAIJ63AX280-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×280 | 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 SAIJ63AX280-10 Is Used
End-Position Tuning
Dial in the exact 270-280 mm travel window during machine commissioning to perfect part seating without swapping cylinders.
Product Changeover
Quickly adjust the rear stopper to accommodate slight variations in product dimensions on a packaging line.
Machining Clamps
Securely position workpieces with 1559 N of force while fine-tuning the clamping reach to avoid fixture interference.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-10 the Right Cylinder?
Choose this 63 mm bore if you need more force than the 50 mm class (982 N push at 0.5 MPa) but want to avoid the larger footprint and higher air consumption of an 80 mm model (2513 N push at 0.5 MPa). An adjustable stroke is preferred over a fixed SAI cylinder when you need variable end-stops for product changeovers or exact positioning at machine setup. Since the nominal stroke is 280 mm, you should use an external guide to prevent excessive side loads on the rod. To replace an ISO 15552 cylinder, match the 63 mm bore, 280 mm stroke, 10 mm adjustment, PT G3/8 ports, and your required mounting bracket. Note that SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets.
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 SAIJ63AX280-10 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 acts as a mechanical stop, allowing you to shorten the effective travel from 280 mm down to 270 mm. This stopper only sets the end position and deceleration; it does not lock or hold the load without continuous air pressure.
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