Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-75S
The AirTAC SAIJ63X115-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559N of push force and 1402N of pull force at 0.5MPa. Its integrated rear stopper provides an adjustable travel window from 40 to 115mm. This wide 75mm adjustment band allows operators to dial in exact end positions during commissioning or product changeovers without physically swapping the cylinder or adding external stops.
Built with an SUS420J2 stainless steel rod and PT tapered ports, this unit includes a magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic solid-state switches mounted into the dual-side sensor grooves on the extruded aluminum barrel. The rear screw acts purely as a travel stop to set deceleration endpoints, so it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 115 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 SAIJ63AX115-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 SAIJ63AX115-75S Is Used
Product Changeovers
Dial the travel back from 115mm to 40mm to handle different package sizes on the same conveyor without changing hardware.
End-Position Tuning
Fine-tune the retract endpoint during machine commissioning to absorb mechanical tolerances and achieve exact positioning.
Variable End Stops
Use the 75mm adjustment window to rapidly set and change stroke limits for diverse clamping or lifting routines.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-75S the Right Cylinder?
Choose this 63mm bore when a 50mm cylinder (982N push at 0.5MPa) lacks thrust, but an 80mm bore (2513N push) is oversized. The 75mm adjustment range is ideal for lines running multiple product sizes, functioning as a variable end-stop that replaces fixed SAI cylinders when exact stroke lengths fluctuate. Because the rear adjuster only restricts travel and is not a lock, any requirement to hold a load unpowered must be met using a SAIL air-released lock, a BSAI clamp-lock, or an external rod lock. To match this ISO 15552 footprint exactly, specify 63mm bore, 115mm stroke, 75mm adjustment, PT ports, and the -S 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 SAIJ63AX115-75S FAQ
At 0.5MPa, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7MPa, the push force increases to 2182N.
The rear adjuster acts as an external stopper, allowing you to shorten the effective travel from the 115mm nominal stroke down to a minimum of 40mm. It sets the end position but does not lock the load without air pressure.
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