
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX150-20 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 SAIJ80X150-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 130-150 mm usable travel window. The barrel is extruded aluminum with sensor grooves on both sides, and this specific configuration includes a SUS420J2 stainless steel rod and PT tapered port threads.
The 20 mm adjustment screw allows you to dial in the exact retract position during commissioning without adding external stops. This cylinder uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX150-20 |
|---|---|
| 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 130-150 mm retract position during product size changes without swapping the cylinder or bolting on external stops.
Fine-tune the final resting position during machine commissioning to perfect the timing of a 2513 N assembly press.
Set precise retract limits for packaging equipment that handles multiple carton sizes on the same line.
The adjustable stroke is selected over a fixed SAI when a machine requires variable end-stops or product changeover flexibility. For load-holding without continuous air pressure, this cylinder will not suffice; instead, look to the SAIL pneumatic lock or BSAI clamp-lock series. To match this ISO 15552 replacement exactly, verify the 150 mm stroke, 20 mm adjustment, PT G3/8 port, and the absence of a magnet.
Quick checklist
The rear adjuster screw lets you shorten the 150 mm nominal stroke by up to 20 mm, creating a 130-150 mm usable travel window. It acts as a mechanical stop and does not lock the load without live air pressure.
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