Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-100 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 SAIJ63AX140-100
The AirTAC SAIJ63X140-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559N of push force at 0.5MPa. It features a SUS420J2 stainless steel rod and PT tapered port threads. By integrating a 100mm adjustment mechanism, this model transforms its 140mm nominal stroke into a highly versatile 40-140mm usable travel window, allowing precise end-position tuning without swapping out the unit.
Because the adjuster functions strictly as a mechanical stop to set the retraction end-point, it will not hold a load without continuous live air pressure. For applications requiring true load-holding without pneumatic pressure, AirTAC SAIL or BSAI series cylinders are recommended. This extruded aluminum barrel design supports CMSE and DMSE sensors via grooves on both sides, and utilizes a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-100 |
|---|---|
| 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 SAIJ63AX140-100
| 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 SAIJ63AX140-100 Is Used
Machine Changeover
Dial in the exact end-stop position within the 40-140mm window during product size transitions without physically replacing the cylinder.
End-Position Tuning
Fine-tune the retraction point at commissioning to correct for mechanical tolerances, ensuring precise positioning of tooling.
Flexible Assembly Lines
Adapt automated station travel distances on the fly to accommodate varying component heights and sizes on a single line.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-100 the Right Cylinder?
Choose this 63mm bore adjustable cylinder when your application demands a flexible 40-140mm travel window during machine setup or product changeover, avoiding the need to maintain multiple fixed-stroke SAI cylinders. If your process requires less force, stepping down to a 50mm bore yields 982N of push force at 0.5MPa. Conversely, upgrading to an 80mm bore provides 2513N at the same pressure for heavier loads.
When replacing an ISO 15552 cylinder, match the 63mm bore, 140mm nominal stroke, 100mm adjustment range, PT port threads, and required mounting bracket. Note that the 20mm rod and M16x1.5 thread provide robust side-load resistance, but any stroke exceeding 300mm necessitates an external guide to prevent rod deflection. Remember that the rear adjuster acts only as a travel stop, not a lock.
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 SAIJ63AX140-100 FAQ
At 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7MPa, the push force increases to 2182N.
The rear adjuster screw acts as a mechanical stop that can shorten the effective stroke by up to 100mm. This creates a usable travel window of 40-140mm, allowing you to trim the retraction end-position without adding external stops.
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