
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX175-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 175mm 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 SAIJ80X175-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 145 to 175 mm. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model uses a PT tapered port thread and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a mechanical stop to set the retract end position; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX175-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 175 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. |
| ×175 | 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 145-175 mm travel window during product size changes to set new retract endpoints instantly without swapping the cylinder.
Fine-tune the final retract position during machine commissioning to hit exact locators without adding external stopper blocks.
Use the 30 mm adjustment range to alter the resting position of a conveyor diverter or clamp between production runs.
The 30 mm adjustment range is selected over a fixed-stroke SAI cylinder when a machine requires variable end-stops for rapid product changeovers or precise commissioning without machining external stop blocks. To replace an ISO 15552 cylinder, match the 80 mm bore, 175 mm stroke, PT ports, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 25 mm rod diameter and M20x1.5 rod thread provide substantial side-load resistance, this cylinder handles robust tasks, though an external guide rail is still recommended for heavy offset loads. Note that the rear adjuster only trims travel and is not a locking brake.
Quick checklist
The rear adjuster screw acts as a mechanical stop that shortens the 175 mm nominal stroke by up to 30 mm, creating a usable travel window of 145 to 175 mm. It sets the retract end position but does not lock or hold the load without live air pressure.
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