Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75S 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 SAIJ63AX175-75S
The AirTAC SAIJ63X175-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 175 mm stroke that can be dialed back by up to 75 mm, creating a highly flexible 100-175 mm usable travel window for precise commissioning. Delivering 1559 N of pull force at 0.5 MPa, it handles robust actuation while allowing rapid end-position tuning without swapping out the barrel.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance in humid or splash-prone environments. The -S magnet option enables direct position feedback via CMSE reed or DMSE electronic sensors fitted into the dual-side sensor grooves. The PT tapered port threads (G3/8) ensure a reliable, sealed pneumatic connection on the 63 mm bore architecture.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75S |
|---|---|
| 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 SAIJ63AX175-75S
| 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 SAIJ63AX175-75S Is Used
Variable End-Stop Tuning
Dial the stroke back from 175 mm to 100 mm on the fly to accommodate different material lengths without physically repositioning the cylinder or adding external stopper blocks.
Product Size Changeover
Perfect for packaging lines that switch between box sizes; the 75 mm rear adjuster allows operators to fine-tune the retract position rapidly during product family transitions.
Corrosion-Resistant Actuation
The SUS420J2 stainless steel rod withstands washdown environments, making it suitable for food processing or material handling where moisture and cleaning chemicals are present.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-75S the Right Cylinder?
Choose this 63 mm bore when an application requires 1559 N pull force at 0.5 MPa (or 1402 N if dropping to a 50 mm bore) alongside significant travel flexibility. The 75 mm adjustment range is ideal for machines processing variable product sizes, letting operators shift the end-stop from 100 to 175 mm during changeovers rather than replacing the cylinder. For fixed-travel setups requiring the same ISO 15552 footprint, the standard SAI series is a simpler alternative.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 175 mm stroke, 75 mm adjustment, PT G3/8 port, and -S magnet. Because the total stroke is 175 mm, side-loading is minimal, but long unsupported loads still require an external guide. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ will not hold a load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ63AX175-75S FAQ
The rear adjuster acts as an external stopper that shortens the effective travel. For this model, you can trim the 175 mm nominal stroke back by up to 75 mm, yielding a usable travel window of 100-175 mm. Note that this adjuster is a stop, not a lock; the cylinder cannot hold a load without live air pressure.
At 0.5 MPa operating pressure, the SAIJ63X175-75-S provides 1559 N of pull force and 2182 N of push force. It can reach a maximum push force of 2805 N at 0.9 MPa, operating efficiently within the 30-800 mm/s speed range.
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