
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 90mm 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.
The AirTAC SAIJ63X90-30 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 63 mm bore and a 90 mm nominal stroke, yielding a usable travel window of 60 to 90 mm. Operating at 0.5 MPa, it delivers 1559 N of push force and 1402 N of pull force, making it a robust choice for mid-range actuation.
This adjustable-stroke model uses a PT tapered port thread and a carbon steel piston rod. The rear stopper screw lets you fine-tune the retract end position during commissioning without adding external stops. It supports a reduced set of ISO 15552 mountings—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting FB, CA, CB, and CR.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 90 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.
| 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.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×90 | 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.
Dial in the 60-90 mm travel window during product size changeovers to set exact retract positions without swapping hardware.
Use the rear stopper screw to establish precise retract limits for machining operations requiring strict positional tuning.
Leverage the 1559 N push force at 0.5 MPa to press or position components, fine-tuning the stroke during initial machine commissioning.
Choose this 63 mm bore cylinder when you need precise end-position tuning on a 90 mm stroke, stepping up from a 50 mm bore that provides 982 N of push force at 0.5 MPa. The rear adjuster acts purely as a travel stop to set deceleration; it does not hold the load without live air. For load-holding requirements without continuous pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder. To replace an ISO 15552 unit, match the 63 mm bore, 90 mm stroke, 30 mm adjustment, G3/8 port, and mounting hardware.
Quick checklist
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to shorten the 90 mm nominal stroke by up to 30 mm, creating a usable travel window of 60 to 90 mm. This stopper sets the end position but does not lock the load without live air pressure.
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