
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 950mm 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 SAIJ63X950-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 940-950 mm usable travel window, allowing you to dial back the nominal 950 mm stroke by up to 10 mm during commissioning. Equipped with a G3/8 PT port and a 20 mm carbon steel rod, it delivers 1559 N of pull force at 0.5 MPa.
Because the stroke approaches the 1500 mm maximum standard limit for this bore, the integrated rear stopper saves you from adding external physical stops. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 950 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. |
| ×950 | 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 position within the 940-950 mm window during initial commissioning without machining new hard stops.
Quickly adjust the end-of-stroke position by up to 10 mm on a packaging line when handling slightly different carton sizes.
Move heavy loads along a 950 mm path using 1559 N of pull force, relying on the built-in stopper for precise endpoint control.
Choose this 63 mm bore when you need robust thrust around 1559 N pull at 0.5 MPa but want to step down from the 80 mm bore's 2268 N pull to save space and air volume. The adjustable stroke is ideal for product changeovers, letting you fine-tune the retract end-position without swapping the cylinder. For load-holding without live air pressure, note that the rear adjuster is strictly a travel stop, not a lock; you would need an external rod lock or a SAIL cylinder instead.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 950 mm stroke, 10 mm adjustment range, G3/8 PT port, and your required mounting style. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR. Given the 950 mm length, ensure adequate external guiding to protect the rod from excessive side-loading.
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 the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 950 mm down to 940 mm. It only sets the travel end and does not lock the load without live air pressure.
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