Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 175mm 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
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-40
The AirTAC SAIJ63X175-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits fine-tuning of the retract end position. It provides a usable travel window of 135-175 mm, allowing you to dial back the 175 mm nominal stroke by up to 40 mm without adding external stops. This bore size delivers a robust 1559 N pull force at 0.5 MPa, making it well-suited for moderate-to-heavy handling tasks.
This unit is built with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. The rear adjuster acts strictly as a travel stop to set the end position, not as a lock, meaning it cannot hold a load without continuous live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAIJ63AX175-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SAIJ63AX175-40 Is Used
Machine Changeovers
Quickly modify the retract distance by up to 40 mm during product size transitions on a packaging line without replacing the cylinder.
End-Position Tuning
Dial in the exact 135 to 175 mm travel window during commissioning to compensate for mechanical tolerances in the fixture.
Assembly Pressing
Leverage the 1559 N pull force at 0.5 MPa to press components securely into place while retaining the ability to adjust the bottoming position.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-40 the Right Cylinder?
Selecting this bore provides a step up from the 50 mm version, which yields 825 N of pull force at 0.5 MPa, giving you significantly greater thrust for heavier tooling. The 40 mm adjustment range is particularly useful during machine commissioning or product changeovers, allowing you to refine the end-of-stroke position on the fly rather than swapping out a fixed-stroke SAI cylinder. Because the stroke is 175 mm, side-load risks are moderate, but any heavy off-center load should still be guided by an external rail. If your process requires the cylinder to hold its position during a pressure loss, you will need an external rod lock or a different series like the SAIL or BSAI, as the SAIJ adjuster only stops travel. This model uses a PT G3/8 port and supports the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ63AX175-40 FAQ
It uses an external adjusting screw at the rear that acts as a stopper, allowing you to shorten the effective stroke from 175 mm down to as little as 135 mm. This creates a 40 mm tuning window to set the exact retract end position without changing the cylinder itself.
At a 0.5 MPa operating pressure, it provides 2182 N of push force and 1559 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 318 kgf of thrust.
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