
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX195-40S 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.
Its built-in 40mm adjustment screw creates a precise 155-195mm usable travel window, letting you dial in the exact retract end position during commissioning without swapping out the entire unit.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. It retains the standard extruded aluminum barrel with dual sensor grooves and operates at speeds between 30 and 800mm/s.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX195-40S |
|---|---|
| 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.
Quickly adapt machinery for varying package sizes by shifting the retract stop within the 155-195mm window instead of physically replacing cylinders on the line.
Fine-tune the final deceleration point during machine commissioning to prevent hard impacts, utilizing the rear screw alongside the standard air cushions.
The adjustable stroke is ideal for product changeovers on a line, providing variable end-stops instead of committing to a fixed-stroke SAI cylinder.
Because the nominal stroke is 195mm, side-load stress is moderate, but ensure external guiding for optimal rod longevity. Remember that the rear adjuster functions strictly as a travel stop, not a locking device; this SAIJ model cannot hold a load without live air pressure. For true pneumatic locking without pressure, consider an AirTAC SAIL or BSAI cylinder. When matching ISO 15552 replacements, verify the 80mm bore, 195mm stroke, 40mm adjustment, PT tapered port threads, and the -S magnet requirement.
Quick checklist
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 40mm. This creates a usable travel window of 155-195mm, allowing you to set the exact retract position without adding external stops.
At 0.7 MPa, the push force increases to 3518N.
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