Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40
The AirTAC SAIJ63X155-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 115 to 155 mm, allowing you to dial back the nominal 155 mm stroke by up to 40 mm during commissioning. Operating at 0.5 MPa, it delivers 1559 N of push force and 1402 N of pull force, making it suitable for mid-range actuation tasks.
This variant features an SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. It uses a PT tapered G3/8 port and relies on adjustable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 155 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 SAIJ63AX155-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×155 | 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 SAIJ63AX155-40 Is Used
Machine Changeover
Fine-tune the 115-155 mm travel window during product size transitions without swapping out the entire actuator assembly.
Variable End Stops
Set precise retraction limits for multi-format tooling, using the 40 mm adjustment range to accommodate different part depths.
Calibrated Clamping
Leverage the 1559 N push force at 0.5 MPa to securely hold workpieces while dialing in the exact clamping position.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40 the Right Cylinder?
Choose this 63 mm bore cylinder when your application requires 1559 N of thrust at 0.5 MPa and benefits from on-the-fly end-position tuning. If your force requirements are lower, stepping down to a 50 mm bore yields 982 N of push force. Conversely, if you need greater power, stepping up to an 80 mm bore provides 2513 N. The adjustable stroke is ideal for product changeovers where the exact end-stop varies, eliminating the need to physically swap cylinders or add external mechanical stops.
When matching this ISO 15552 cylinder for an interchange replacement, verify the 155 mm stroke, 40 mm adjustment range, PT G3/8 port, and your preferred mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
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 SAIJ63AX155-40 FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 40 mm. This creates a usable travel window between 115 and 155 mm, which can be fine-tuned during commissioning without disassembling the cylinder.
At an operating pressure of 0.5 MPa, the SAIJ63X155-40 provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
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