
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 150mm 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 SAIJ63X150-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 120-150 mm usable travel window from its 150 mm nominal stroke. Delivering 1559 N of push force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features PT tapered port threads.
The integrated rear stopper allows you to fine-tune the retract end position at commissioning without adding external stops. This extruded aluminum profile cylinder includes sensor grooves on both sides, though a magnet is not specified on this unit. The rear adjuster acts strictly as a travel stop and does not hold the load without live air.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 150 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. |
| ×150 | 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 exact retract distance within the 120-150 mm window during commissioning to perfect a pressing or clamping operation.
Quickly adjust the stroke by up to 30 mm on a packaging line when switching to a different product size, avoiding cylinder swaps.
Fine-tune the tooling approach distance on an assembly fixture without machining new hard stops or altering the ISO 15552 mounting footprint.
Choose this 63 mm bore when a 50 mm cylinder (982 N push at 0.5 MPa) lacks thrust or an 80 mm bore (2513 N) is physically too large. An adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers, unlike a fixed-stroke SAI cylinder. For a true ISO 15552 replacement match, confirm the 150 mm stroke, 30 mm adjustment, G3/8 port, and mounting style.
Because the nominal stroke is 150 mm, side-loading is less severe than on longer strokes, but the 20 mm rod diameter still requires external guiding for heavy lateral loads. Note that the rear adjuster and air cushions only decelerate the travel end; they do not function as a lock. For load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder.
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 lets you shorten the effective stroke by up to 30 mm, creating a usable travel window of 120-150 mm. It acts as a mechanical stop for end-position tuning and does not lock the load without air pressure.
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