Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-30S
The AirTAC SAIJ63X300-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a SUS420J2 stainless steel rod and a built-in magnet for position sensing. With a 300 mm nominal stroke and a 30 mm adjustment range, it provides a usable travel window of 270-300 mm, allowing precise end-position tuning without swapping hardware.
This 63 mm bore generates 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. Because the stroke reaches 300 mm, the M16x1.5 rod thread should be paired with an external guide to prevent excessive side-loading on the piston.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 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 SAIJ63AX300-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×300 | 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 SAIJ63AX300-30S Is Used
Product Changeovers
Dial in the 270-300 mm travel window during packaging line format changes to accommodate different carton sizes without changing the cylinder.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to perfectly seat parts, using the rear screw rather than adding external mechanical stops.
Assembly Pressing
Leverage the 2182 N push force at 0.7 MPa to press components securely, relying on the adjustable stroke to control insertion depth accurately.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-30S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (offering 825 N pull at 0.5 MPa) lacks the necessary thrust, but an 80 mm bore (2268 N pull) is physically oversized. The 30 mm adjustment window is ideal for machine setups requiring variable end-stops during product changeovers, eliminating the need to bolt on external stops or buy a fixed-stroke SAI cylinder.
For a direct ISO 15552 replacement match, specify the 63 mm bore, 300 mm stroke, 30 mm adjustment, PT tapered ports, and the -S magnet option. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder. The available mounting set includes 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 SAIJ63AX300-30S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N pull force and 1559 N push force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to trim the effective stroke by up to 30 mm, creating a 270-300 mm travel window. It acts as a mechanical stop and does not lock the load without live air pressure.
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