The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX180-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 180mm 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 SAIJ50X180-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 180 mm stroke back by up to 30 mm. This creates a usable travel window of 150 to 180 mm, enabling precise end-position tuning at commissioning without swapping out the cylinder or adding external stops. Delivering 982 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance.
This model includes a built-in magnet (-S) for position sensing with AirTAC CMSE reed and DMSE electronic switches. It uses PT tapered G1/4 ports and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider the SAIL or BSAI series.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX180-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 180 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. |
| ×180 | 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 150-180 mm travel window during line changeovers to accommodate different product lengths without replacing the cylinder.
Fine-tune the retract end-position at machine commissioning using the rear screw, avoiding the need to machine external stopper blocks.
Apply up to 982 N of force at 0.5 MPa for pressing operations, relying on the adjustable stop to set precise material deformation depth.
Choose this 50 mm bore when your application requires the 982 N push force (0.5 MPa) and a 150 to 180 mm adjustable travel window. If you need less force, the 40 mm bore provides 628 N; if you need more, the 63 mm bore offers 1559 N. The adjustable stroke is ideal for machine setups requiring frequent product changeovers, serving as a variable end-stop rather than a fixed-stroke SAI cylinder.
Because the 180 mm stroke is below the 300 mm threshold, side-load risks are moderate, but the 20 mm rod diameter still requires proper guiding for long unsupported loads. This SAIJ model supports the reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. It is dimensionally interchangeable per ISO 15552 standards.
Quick checklist
At 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm from the nominal 180 mm, providing a usable travel window of 150 to 180 mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.