Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-30
The AirTAC SAIJ63X140-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 110-140 mm usable travel window, allowing you to dial back the 140 mm nominal stroke by up to 30 mm during commissioning. Operating at 0.5 MPa, it delivers 1559 N of pull force and 2182 N of push force, fitting robust actuation needs.
This unit includes a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. It uses a PT tapered port thread and offers variable air cushions at both ends. The extruded aluminum barrel features sensor grooves on both sides, compatible with CMSE reed and DMSE electronic sensors if a magnet is added later.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 140 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 SAIJ63AX140-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×140 | 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 SAIJ63AX140-30 Is Used
Machine Setup Tuning
Dial in the exact 110 to 140 mm retract position during initial commissioning without machining external stopper blocks.
Product Size Changeover
Quickly adapt a packaging line to different carton lengths by adjusting the rear stopper up to 30 mm on the fly.
Variable End-Stop Forming
Provide precise, adjustable mechanical end-positioning for light press or forming tasks that require strict depth control.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-30 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (offering 825 N pull at 0.5 MPa) is too weak, but an 80 mm bore (2268 N pull) is oversized. The 30 mm adjustment window is ideal for product changeovers, letting you fine-tune the retract end position without swapping cylinders or adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. As a dimensionally interchangeable ISO 15552 cylinder, it matches standard SAI replacements using a 63 mm bore, 140 mm stroke, PT port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounts.
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 SAIJ63AX140-30 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. At 0.7 MPa, the push force increases to 2805 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 140 mm nominal stroke by up to 30 mm, creating a 110-140 mm usable travel window. It only sets the end position and does not lock the load without live air pressure.
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