
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX165-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 165mm 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 SAIJ80X165-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the travel by up to 30 mm. This creates a usable stroke window of 135 to 165 mm, letting you fine-tune the retract end position during commissioning without adding external stops.
This model uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. It features PT tapered port threads (G3/8) and variable air cushions at both ends to manage impact deceleration.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX165-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 165 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. |
| ×165 | 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 135-165 mm end position during machine commissioning to ensure precise pressing force without mechanical shims.
Quickly adapt the retract stroke on packaging lines handling varying box lengths by adjusting the rear stopper instead of replacing cylinders.
The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder for minor position tweaks. For strokes of 300 mm or more, external guide rails are recommended to prevent rod side-loading, though this 165 mm stroke is well within safe limits.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 165 mm stroke, 30 mm adjustment range, PT G3/8 ports, and required mounting interface. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options. Note that the rear adjuster acts as a travel stop, not a lock; the cylinder will not hold a load without live air pressure. For true load-holding without air, consider the SAIL or BSAI series.
Quick checklist
The rear adjuster screw acts as a mechanical stop that shortens the effective stroke by up to 30 mm, providing a usable travel window of 135 to 165 mm. It only sets the travel end position and does not lock or hold the load without continuous air pressure.
The maximum operating pressure is 1.0 MPa.
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