Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-10S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-10S 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 SAIJ63AX300-10S
The AirTAC SAIJ63X300-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 1559N of push force and 1402N of pull force at 0.5 MPa, operating via a G3/8 PT tapered port. With a nominal travel of 300mm, the external rear stopper allows you to trim the effective stroke by up to 10mm, creating a precise 290-300mm usable travel window for commissioning without swapping hardware.
This specific SKU includes a piston magnet for position sensing and uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance. The extruded aluminum barrel incorporates sensor grooves on both sides, seamlessly accepting AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjustment mechanism acts purely as a travel stop to fine-tune the end position, meaning it will not hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-10S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-10S |
|---|---|
| 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 SAIJ63AX300-10S
| 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 SAIJ63AX300-10S Is Used
Variable End-Stop Tuning
Dial in the exact 290-300mm travel window during machine commissioning to accommodate varying product sizes without replacing the entire cylinder.
Product Changeover
Quickly adjust the retract end-position on automated lines when switching between different material thicknesses or packaging formats.
Sensor-Driven Positioning
Leverage the integrated -S magnet alongside DMSE electronic sensors to confirm the adjusted end-of-stroke position in high-speed assembly equipment.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-10S the Right Cylinder?
Choose this 63mm bore adjustable-stroke cylinder when your application requires exact end-position tuning during machine setup or product changeover, avoiding the need to bolt on external stops or buy custom fixed-stroke SAI units. If your project demands less force, stepping down to a 50mm bore yields 982N of push force at 0.5 MPa, while upgrading to an 80mm bore provides 2513N for heavier payloads.
Because this unit features a 300mm stroke, the M16x1.5 rod and piston assembly can experience amplified side loads if left unsupported; always guide the load externally to prevent premature seal wear. For applications requiring true load-holding without continuous air pressure, this cylinder is not a lock; consider the AirTAC SAIL or BSAI series instead. This configuration uses a PT tapered port, includes the -S magnet, and supports mounting accessories from the reduced SAIJ set: 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 SAIJ63AX300-10S FAQ
At 0.5 MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 300mm stroke by up to 10mm, providing a usable travel window of 290-300mm. It functions as a travel stop for end-position tuning and does not lock or hold the load without live air pressure.
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