Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75 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 SAIJ63AX155-75
The AirTAC SAIJ63X155-75 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 155 mm nominal stroke that can be dialed back by up to 75 mm, yielding a usable travel window of 80 to 155 mm. This wide adjustment band is ideal for product changeovers, letting you fine-tune end positions at commissioning without swapping the cylinder or adding external stops. The 63 mm bore delivers 1559 N of pull force at 0.5 MPa and 2805 N of push force at 0.9 MPa.
This SKU features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance over standard carbon steel. It uses PT tapered port threads (G3/8) and offers variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a mechanical travel stop to set the retract end-position; it does not lock or hold the load without live air pressure. For position-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75 |
|---|---|
| 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 SAIJ63AX155-75
| 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 SAIJ63AX155-75 Is Used
Product Changeover
Dial in the exact retract stop for different part sizes on a single machine without disassembling the line or swapping cylinders.
End-Position Tuning
Trim the effective stroke from 155 mm down to 80 mm during commissioning to perfect the tooling clearance and hit the exact datum point.
Variable End Stops
Set a precise mechanical limit for automated assembly presses, using the rear stopper to define the final resting position independently of the pneumatic stroke.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75 the Right Cylinder?
Select this 63 mm bore adjustable cylinder when your application requires a specific retract distance within the 80 to 155 mm window. If you need less force, the 50 mm bore provides 825 N of pull at 0.5 MPa; for heavier loads, the 80 mm bore offers 2268 N of pull. Because the 155 mm stroke is under 300 mm, side-load stress is moderate, but the 20 mm rod diameter and M16x1.5 thread still require external guiding if the load is unsupported or heavily offset. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. To match this ISO 15552 replacement, specify: 63 mm bore, 155 mm stroke, 75 mm adjustment, PT G3/8 ports, SUS420J2 rod, and no magnet.
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 SAIJ63AX155-75 FAQ
At 0.5 MPa it provides 1559 N of pull force and 1402 N of push force. At 0.9 MPa, the push force increases to 2805 N.
A rear screw stopper lets you mechanically shorten the retract stroke by up to 75 mm. This creates a usable travel window between 80 mm and 155 mm, allowing fine-tuning of the end position without replacing the cylinder.
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