Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 105mm 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
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-75
The AirTAC SAIJ63X105-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 1559N push force at 0.5MPa, utilizing a G3/8 port and a 20mm piston rod. The integrated rear stopper allows you to trim the nominal 105mm travel back by up to 75mm, creating a highly flexible 30-105mm usable stroke window for precise end-position tuning.
This specific configuration incorporates an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for easy switch mounting, though this particular unit ships without a magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR variants.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 105 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 SAIJ63AX105-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×105 | 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 SAIJ63AX105-75 Is Used
Product Changeover
Dial in the 30-105mm travel window during format size changes on packaging lines without physically replacing the cylinder.
Prototype Setup
Fine-tune the retract end-position during machine commissioning to find the exact clamping distance before locking down the stopper.
Variable End Stops
Adjust the stroke dynamically for automated assembly stations handling parts of varying heights.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-75 the Right Cylinder?
Choose this 63mm bore when you need more thrust than a 50mm cylinder (982N push at 0.5MPa) but want a smaller footprint than an 80mm option (2513N push). The generous 75mm adjustment range is ideal for prototyping or production lines requiring frequent product changeovers, allowing you to set variable end-stops on the fly without swapping out the entire actuator.
For ISO 15552 replacement matching, verify the 105mm nominal stroke, 75mm adjuster range, PT tapered port threads, and the SUS420J2 rod material. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for dead-air load holding, consider an AirTAC SAIL or BSAI cylinder. Furthermore, the 20mm rod and M16x1.25 thread handle side loads well, but always support long unsupported strokes with an external guide.
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 SAIJ63AX105-75 FAQ
At 0.5MPa operating pressure, 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 screw acts as a mechanical stop, allowing you to shorten the 105mm nominal stroke by up to 75mm. This creates a usable travel window of 30-105mm, enabling precise end-position tuning without adding external stops.
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