Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40S
The AirTAC SAIJ63X115-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 115 mm stroke that can be dialed back by up to 40 mm, creating a precise 75-115 mm usable travel window for fine-tuning retract end positions at commissioning. Delivering 1559 N of push force at 0.5 MPa, it handles robust actuation tasks while maintaining standard ISO 15552 mounting dimensions.
This variant features an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel houses sensor grooves on both sides, and the rear adjuster functions strictly as a mechanical stop for position tuning, not as a load-holding lock.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 115 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 SAIJ63AX115-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 SAIJ63AX115-40S Is Used
Changeover Calibration
Dial in the 75-115 mm retract distance during product size changeovers on a packaging line without adding external mechanical stops.
End-Position Trimming
Fine-tune the final resting position of a tooling head during machine setup to compensate for mechanical wear or sensor drift.
Variable End Stops
Adjust the effective stroke on the fly for automated assembly equipment that processes parts of slightly varying heights.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40S the Right Cylinder?
Select this 63 mm bore cylinder when an application requires variable end-stop positioning without swapping out physical components; stepping down to a 50 mm bore drops the 0.5 MPa push force to 982 N. Because the stroke is 115 mm, side-loading is minimal, but always ensure the SUS420J2 rod and M16x1.5 thread are properly aligned. The PT tapered ports and G3/8 thread size match standard pneumatic manifolds. For applications needing the cylinder to hold a load without continuous live air pressure, a standard SAIJ is insufficient—consider an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. This adjustable model uses the standard SAIJ mounting set: 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 SAIJ63AX115-40S 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 a maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the 115 mm nominal stroke by up to 40 mm, providing a usable travel window of 75 to 115 mm. It requires live air to function and does not lock or hold the load in place without pressure.
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