Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-75 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 SAIJ63AX210-75
The AirTAC SAIJ63X210-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel. With a 210 mm nominal stroke and a 75 mm adjustment range, you gain a usable travel window of 135 to 210 mm. This broad adjustment capability is perfect for product-size changeovers on a line, letting you reposition the end stop without physically swapping out the cylinder or adding external stops. Delivering 1559 N of push thrust at 0.5 MPa, it handles mid-range automation tasks with ease.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads (G3/8) ensure a rigid, leak-free pneumatic connection. Because the adjuster acts purely as a mechanical stop at the retract end, it does not hold the load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-75 |
|---|---|
| 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 SAIJ63AX210-75
| 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 SAIJ63AX210-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 135-210 mm window during machine setup, eliminating the need to machine custom spacers for every new product run.
Product Size Changeover
Quickly adapt a packaging line to different package lengths by turning the rear adjuster screw, reducing downtime between production batches.
Mid-Force Positioning
Leverage the 1559 N of thrust at 0.5 MPa to push mid-weight pallets or fixtures into a precise working zone without over-traveling.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-75 the Right Cylinder?
Choose this 63 mm bore when your application requires around 1559 N of push force at 0.5 MPa. If your process demands less force, stepping down to a 50 mm bore yields 982 N of push thrust, whereas stepping up to an 80 mm bore provides 2513 N. The adjustable stroke is highly beneficial during machine commissioning, allowing precise end-position tuning without rigid external stops. For a fixed end-stop requirement without the adjustment feature, the standard SAI series is a direct alternative.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 210 mm stroke, 75 mm adjustment, PT port threads, and the SUS420J2 rod material. Since the 210 mm stroke exceeds 300 mm is not the case here, external side-load guides are less critical, but long unsupported rods still require proper mounting to prevent premature wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ63AX210-75 FAQ
The rear of the cylinder features an external adjusting screw that acts as a mechanical stopper. By turning it, you can shorten the effective stroke by up to 75 mm from the 210 mm nominal length, providing a usable travel window of 135 to 210 mm. It does not lock the load without live air pressure.
At a standard operating pressure of 0.5 MPa, the SAIJ63X210-75 provides 1559 N of push thrust and 1402 N of pull thrust. At the maximum rated pressure of 1.0 MPa, it can deliver up to 318 kgf of push force.
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