
The AirTAC Airtac SAI80 Standard Air Cylinder SAI80X1790SH is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 1790mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAI80X1790-S is a double-acting ISO 15552 profile cylinder engineered for an extended 1790mm stroke. Delivering 2513N of push force at 0.5MPa, this oversized unit is a made-to-order solution for applications requiring substantial reach. The extruded aluminum barrel omits tie-rods, presenting a clean exterior that aligns with standard ISO 15552 dimensional interfaces.
Because this specific configuration exceeds the standard maximum stroke of 1500mm, it is classified as a non-standard variant. It is equipped with high-temperature Viton (FKM) seals, expanding the operating temperature range beyond the standard -20 to +70C, making it ideal for thermally demanding environments. The carbon steel piston rod ensures robust structural integrity over the long 1790mm extension, and the integrated -S magnet enables direct mounting of CMSE or DMSE reed switches along the dual sensor grooves.
| Model | Airtac SAI80 Standard Air Cylinder SAI80X1790SH |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 1790 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
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. |
| ×1790 | 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.
Drives large fixtures across extended 1790mm spans in automated manufacturing cells where standard strokes fall short.
Actuates long-push mechanisms to transfer heavy pallets or components between sequential processing stations.
Operates large-scale industrial safety doors or machine guarding panels requiring reliable, long-distance linear movement.
Selecting this 80mm bore model makes sense when the 2513N force at 0.5MPa (or 3518N at 0.7MPa) is required across an unusually long 1790mm span. If your application only needs 1767N of push force, stepping down to a 50mm bore optimizes air consumption; conversely, exceeding 3927N requires a 100mm bore.
At 1790mm, the unsupported piston rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear and seal failure, pair this cylinder with an external linear guide or utilize a guided cylinder carriage. The adjustable air cushions at both ends decelerate the mass near stroke ends but do not function as a braking mechanism; if the air supply is lost, the load will drift. For position holding without live pressure, specify the SAIL (air-released lock) variant or an external rod lock. This unit features PT tapered port threads and operates within a 30-800mm/s speed range.
Quick checklist
At 0.5MPa, the 80mm bore generates 2513N of push force and 2268N of pull force. If operated at 0.7MPa, the push force increases to 3518N.
Yes, the SAI80X1790-S is dimensionally interchangeable per ISO 15552 standards. You can drop it in as a replacement for other ISO 15552 profile cylinders of the same bore and stroke, provided your mounting accessories (like FA flanges or TC trunnions) match the standard interface.
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