
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX950-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 950mm stroke, G1/4 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 SAIJ50X950-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates an 850-950 mm usable travel window. Delivering 982 N of push thrust at 0.5 MPa, it integrates an extruded aluminum barrel with dual sensor grooves. The rod is constructed from SUS420J2 stainless steel, and the pneumatic supply connects via a PT tapered G1/4 port.
This model utilizes a 100 mm adjustment range to fine-tune end positions at commissioning without adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air. It supports a speed range of 30-800 mm/s and includes adjustable air cushions at both ends to decelerate the motion.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX950-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | 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 clamping position within the 850-950 mm window during machine commissioning without machining new hard stops.
Quickly adapt a packaging line to different carton lengths by adjusting the rear stopper screw up to 100 mm.
Move payloads along a 950 mm travel path while using the fine adjustment to set precise end-of-stroke deceleration.
Select this 50 mm bore when an application requires 982 N push force at 0.5 MPa, stepping down from a 63 mm bore that yields 1559 N. The 100 mm adjustment range is ideal for product-size changeovers on a line, allowing operators to dial in the exact end-stop without swapping the cylinder. For load-holding without live pressure, this plain SAIJ is insufficient; consider an AirTAC SAIL or BSAI series instead.
Because the 950 mm stroke is long, the 20 mm rod diameter requires an external guide to prevent excessive side-loading. To match this ISO 15552 cylinder, specify a 50 mm bore, 950 mm nominal stroke, 100 mm adjuster, PT G1/4 port, and the SUS420J2 stainless steel rod. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Quick checklist
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm, creating an 850-950 mm usable travel window. It acts as a mechanical stop to set the end position and works alongside the air cushions for deceleration.
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push thrust and 825 N of pull thrust. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
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