
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm 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 SAIJ80X135-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 35 to 135 mm, allowing you to dial back the nominal 135 mm stroke by up to 100 mm during commissioning. Delivering 2513 N of push force at 0.5 MPa, it fits medium to heavy pneumatic tasks perfectly.
This model uses a 25 mm carbon steel rod with an M20x1.5 thread, offering robust resistance to side loads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches (requires a magnet). The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 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. |
| ×135 | 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.
Rapidly adapt retract depth for different product heights on a single line using the 100 mm adjustment range instead of swapping out entire cylinders.
Dial in the exact 35 to 135 mm end-stop during fixture development without machining custom external spacers or stopper blocks.
Fine-tune the pressing depth of a 2513 N assembly station on the fly to prevent component damage and ensure consistent joint mating.
Choose this 80 mm bore when your application requires the 2513 N push force at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. The massive 100 mm adjustment range is perfect for prototyping or production lines running multiple product sizes, letting you fine-tune the retract end-position without swapping cylinders or adding external stops. If you need to hold a load without continuous air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you would need the SAIL or BSAI series for that function.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 135 mm stroke, PT tapered port, and the desired mounting style. Because the stroke here is under 300 mm, side-load stress is manageable, but an external guide rail is still recommended for heavy loads. This unit operates without a magnet, so position sensing is not supported unless upgraded.
Quick checklist
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 5026 N.
The nominal stroke is 135 mm, but the rear adjuster allows you to shorten the effective travel by up to 100 mm. This creates a usable stroke window of 35 to 135 mm for precise end-position tuning.
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