
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX230-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 230mm 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 SAIJ50X230-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and provides a usable travel window of 210-230mm, letting you trim the effective stroke by up to 20mm during commissioning without swapping the unit.
This variant includes a magnet for CMSE or DMSE sensors and uses an SUS420J2 stainless steel rod. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX230-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 230 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. |
| ×230 | 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.
Fine-tune the 210-230mm travel window during product size changes to set precise end positions without adding external mechanical stops.
Apply up to 982N of push force at 0.5 MPa for pressing operations, using the rear screw to dial in the exact contact depth.
Sort or divert items on a line with the -S magnet and DMSE electronic sensors, adjusting the stroke by up to 20mm for varying package sizes.
Choose this 50mm bore when you need more power than a 40mm cylinder (528N pull at 0.5MPa) but want a smaller footprint than a 63mm unit (1559N push). The adjustable stroke is ideal for product changeovers, allowing you to dial in the exact end position rather than machining external stops. For a fixed end position, the standard SAI cylinder is sufficient.
To match this ISO 15552 cylinder, confirm the 50mm bore, 230mm stroke, 20mm adjustment, PT tapered port threads, and the -S magnet. Since the stroke is 230mm, ensure external guiding is used to prevent excessive side-loading on the M16x1.5 rod thread. Note that the rear adjuster is a stop, not a lock; for load-holding without live air, use a SAIL or BSAI cylinder.
Quick checklist
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 20mm. This creates a usable travel window of 210-230mm, allowing precise end-position tuning at commissioning without replacing the cylinder.
At 0.5 MPa operating pressure, the SAIJ50X230-20-S generates 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
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