Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75 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 SAIJ63AX175-75
The AirTAC SAIJ63X175-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that permits a usable travel window of 100-175 mm. It delivers a 0.5 MPa push force of 1559 N and a pull force of 1402 N, making it well-suited for mid-range actuation tasks. The piston rod is constructed from SUS420J2 stainless steel, providing enhanced resistance to corrosion and surface wear compared to standard carbon steel.
Equipped with a G3/8 port and M16x1.5 rod thread, this model includes variable air cushions at both ends to manage end-of-stroke impact. The wide 75 mm adjustment range allows operators to dial in the retract position precisely during commissioning or product changeovers without adding external mechanical stops. It operates at speeds of 30-800 mm/s and relies on its extruded aluminum barrel with dual-side sensor grooves for straightforward switch mounting.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75 |
|---|---|
| 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 SAIJ63AX175-75
| 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 SAIJ63AX175-75 Is Used
Product Changeovers
Dial in the exact retract distance within the 100-175 mm window during format changes without physically swapping the cylinder or adding spacers.
End-Stop Tuning
Fine-tune the final resting position of the tooling during machine commissioning to achieve precise alignment without mechanical shims.
Variable Positioning
Accommodate multiple part sizes on a single conveyor line by adjusting the rear stopper to set the exact required stroke length per batch.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75 the Right Cylinder?
Select this 63 mm bore cylinder when an application demands a highly variable retract end-position, as the 75 mm adjustment window allows rapid adaptation for different product sizes on a single line. If your process requires less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa, while moving up to an 80 mm bore provides 2513 N for heavier loads. Because the 175 mm stroke is below the 300 mm threshold, external side-load guides are less critical, though the robust M16x1.5 thread helps manage moderate bending loads.
When specifying a replacement, ensure it matches the 63 mm bore, 175 mm stroke, 75 mm adjustment range, PT tapered port threads, and SUS420J2 stainless steel rod material. Remember that the rear adjuster functions strictly as a travel stop and cannot hold a load without continuous air pressure; for true load-holding, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder. This SAIJ model supports the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting styles.
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 SAIJ63AX175-75 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. If operated at 0.7 MPa, the push force increases to 2182 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from its 175 mm nominal length down to as little as 100 mm. This creates a 75 mm usable travel window for fine-tuning end positions without replacing the cylinder.
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