Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-20 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 SAIJ63AX175-20
The AirTAC SAIJ63X175-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel, creating a 155-175mm usable window for precise end-position tuning. Delivering 1559N of push thrust at 0.5MPa, it provides robust force for mid-range automation tasks.
This variant utilizes a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes PT tapered port threading. The extruded aluminum barrel integrates sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic sensors exactly where needed without extra hardware.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-20 |
|---|---|
| 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 SAIJ63AX175-20
| 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 SAIJ63AX175-20 Is Used
Product Changeovers
Dial in the 155-175mm travel window during format changes to accommodate different package lengths without replacing the actuator.
End-Stop Tuning
Fine-tune the final retract position during machine commissioning to align tooling perfectly, eliminating mechanical spacer shimming.
Assembly Pressing
Leverage the 1559N push force at 0.5MPa to seat bearings or pins, using the adjuster to set the exact pressing depth limit.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-20 the Right Cylinder?
Choose this 63mm bore when a 40mm bore (628N at 0.5MPa) lacks the power for your heavier fixtures, but an 80mm bore (2513N at 0.5MPa) is physically oversized. The 20mm rear adjuster is ideal for product changeovers, letting you shift the end-stop without swapping cylinders or adding external stops. For any fixed-distance requirement, a standard SAI cylinder is simpler, but the SAIJ wins on lines running multiple product sizes.
To match this ISO 15552 cylinder exactly, specify: 63mm bore, 175mm stroke, 20mm adjustment, PT G3/8 port, and your required mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Remember the rear adjuster acts only as a travel stop; it does not hold the load without live air, so use a SAIL or BSAI cylinder if fail-safe locking is required.
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 SAIJ63AX175-20 FAQ
At a 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push thrust and 1402N of pull thrust. Maximum thrust is 318 kgf at 1.0MPa.
The rear adjuster screw acts as a mechanical stop that shortens the nominal 175mm stroke by up to 20mm, yielding a usable 155-175mm travel window. It only sets the end position and does not lock the load without continuous air pressure.
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