
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX155-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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 SAIJ80X155-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. The integrated rear stopper allows you to trim the effective travel back by up to 100mm, creating a highly flexible 55-155mm usable stroke window for precise end-position tuning.
This variant utilizes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and pairs with PT tapered G3/8 ports. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of switches. While the rear adjuster and variable air cushions decelerate the piston at the end of travel, neither component mechanically locks the load without live air pressure.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX155-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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. |
| ×155 | 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 55-155mm travel window during product size changeovers without physically replacing the cylinder or reworking mounting plates.
Fine-tune the retract end-position during commissioning to perfect pressing or forming depths, absorbing mechanical tolerances via the rear screw.
The massive 100mm adjustment range is ideal for prototyping cells or machinery processing variable product sizes, allowing you to dial in the exact 55-155mm travel without swapping cylinders or adding external stops. For fixed, non-adjustable travel requirements, the standard SAI series is more compact.
Because this is a double-acting cylinder, it requires continuous air pressure to hold position; the rear adjuster acts only as a travel stop. If your process needs fail-safe load holding without live air, consider the SAIL (air-released lock) or BSAI (clamp-lock) series. This model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. The robust 25mm rod handles moderate side loads, though long-stroke setups should still use an external guide.
Quick checklist
At 0.9 MPa, the push force increases to 4523N. The maximum rated force is 513 kgf at 1.0 MPa.
A rear-mounted external stopper screw lets you shorten the nominal 155mm stroke by up to 100mm, creating a usable travel window of 55-155mm. It acts as a physical stop to set the end position and is not a locking mechanism.
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