Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 210mm 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
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-30
The AirTAC SAIJ63X210-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 30 mm. This creates a highly versatile 180-210 mm usable stroke window, letting you dial in the exact retract end-position during commissioning without adding external stops. Delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa, it fits perfectly into mid-range pneumatic setups.
This unit is configured with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, though this specific SKU is non-magnetic. The rear adjuster acts purely as a mechanical stop to set deceleration and cannot hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 210 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 SAIJ63AX210-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×210 | 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 SAIJ63AX210-30 Is Used
Machine Changeover
Dial in the 180-210 mm retract stop during product size transitions without physically replacing the cylinder or adding external spacers.
End-Position Tuning
Fine-tune the exact end-of-stroke deceleration point at commissioning to prevent hard impacts and optimize machine timing.
Variable End Stops
Set multiple retract positions on the fly for flexible clamping or pressing tasks within the 30 mm adjustment window.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-30 the Right Cylinder?
Choose this 63 mm bore when your application requires around 1559 N of thrust at 0.5 MPa. If your setup needs less force, stepping down to a 50 mm bore yields 982 N, while moving up to an 80 mm bore provides 2513 N. The 30 mm adjustment range is ideal for product changeovers on a line where multiple end-stop positions are needed without physically swapping the cylinder for a fixed-stroke SAI variant. Remember that the rear adjuster is a travel stop, not a lock; if you need true load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
Because this model has a 210 mm stroke, which exceeds 300 mm is not the case here, but standard guidance still applies: ensure your mounting interface handles the side loads. This SAIJ model uses the reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552, utilizing a G3/8 port and PT threads.
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 SAIJ63AX210-30 FAQ
The rear adjuster screw lets you shorten the nominal 210 mm stroke by up to 30 mm, providing a usable travel window of 180-210 mm. It acts as a mechanical stop to set the end position and deceleration, but it is not a lock and will not hold the load without live air pressure.
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It is configured with a SUS420J2 stainless steel rod (option A) and a G3/8 PT tapered port.
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