
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX195-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 195mm 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 SAIJ80X195-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 155-195 mm usable travel window. The PT tapered port is G3/8, and the unit reaches speeds of 30-800 mm/s.
This adjustable-stroke design allows fine end-position tuning at commissioning without swapping the cylinder or adding external stops. The rear screw acts as a travel stop, not a lock, so it cannot hold a load without live air. For load-holding without pressure, consider the SAIL or BSAI series. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX195-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 195 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. |
| ×195 | 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 distance within the 155-195 mm window during machine setup, eliminating the need to physically swap cylinders for minor stroke corrections.
Quickly adapt the cylinder's effective travel to accommodate new product sizes on a conveyor line by turning the rear adjuster screw.
The 40 mm adjustment window is ideal for product changeovers on a line, letting you dial in the exact end-stop without hardware swaps. The 25 mm SUS304 rod handles side loads better than smaller rods, but for this 195 mm stroke, external guides are still recommended for heavy loads. To match an ISO 15552 replacement, specify the 80 mm bore, 195 mm stroke, 40 mm adjustment, PT G3/8 port, and SUS304 rod material.
Quick checklist
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm, creating a usable travel window of 155 to 195 mm. It acts as a mechanical stop to fine-tune the end position, but it is not a lock and cannot hold the load without continuous air pressure.
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