
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX150-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ80X150-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 50 mm. This yields a highly flexible 100-150 mm usable stroke window, letting you fine-tune the retract end-position at commissioning without swapping the cylinder or bolting on external stops.
Built for precise machine changeovers, this unit includes a -S magnet for CMSE reed and DMSE electronic sensors, both fitting neatly into the dual-side extruded barrel grooves. The piston rod uses SUS420J2 stainless steel (code A) for enhanced corrosion resistance, and the PT tapered ports ensure a tight pneumatic seal.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX150-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. 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. |
|---|---|
| 80 | 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 position within the 100-150 mm window when switching between product sizes on a packaging line.
Use the 50 mm rear adjuster to set precise end-of-stroke limits during commissioning without adding external mechanical stops.
Select this 80 mm bore when your application requires substantial thrust—up to 2513 N at 0.5 MPa—combined with variable end-stops for product size changes. If you need less force, a 63 mm bore offers 1559 N at 0.5 MPa; for heavier payloads, stepping up to a 100 mm bore yields 3927 N. The rear adjuster acts purely as a mechanical travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. To replace an ISO 15552 cylinder, match the 80 mm bore, 150 mm stroke, 50 mm adjustment, PT G3/8 port, and -S magnet.
With a 150 mm stroke, the 25 mm rod and M20x1.5 thread provide excellent rigidity, though long unsupported strokes still benefit from an external guide to manage side loads. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Quick checklist
At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 150 mm nominal stroke by up to 50 mm, creating a 100-150 mm usable travel window. It is a travel stop, not a lock, and does not hold the load without live air.
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