
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX170-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 170mm 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 SAIJ80X170-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits fine-tuning of the end position without swapping hardware. The integrated stopper screw modifies the effective travel, creating a usable 140-170 mm window from the 170 mm nominal stroke.
This model relies on a 25 mm piston rod and M20x1.5 rod thread to handle high side loads, though an external guide remains recommended for long unsupported travel. The extruded aluminum barrel includes sensor grooves on both sides, while the rear stopper acts purely as a travel deceleration point. It does not lock or hold the load without continuous air pressure, so a SAIL or BSAI variant is required for fail-safe load holding.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX170-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 170 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. |
| ×170 | 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 clamping depth on machining fixtures by adjusting the rear stopper, accommodating different material thicknesses without changing the cylinder.
Rapidly reconfigure conveyor sorting arms by shifting the travel window from 170 mm down to 140 mm to handle varying package sizes on the fly.
Fine-tune the pressing force and travel end-point during automated assembly commissioning, preventing over-travel without adding external mechanical stops.
The 30 mm adjustment range is ideal for production lines running mixed product sizes, allowing operators to dial in the exact end-stop during commissioning rather than machining custom external stops. If your process requires the cylinder to maintain its position after a complete air loss, note that this standard adjuster is not a brake; you must select a SAIL locking cylinder or an external pilot-operated check valve.
When ordering a replacement, verify the 170 mm stroke, 30 mm adjustment range, PT port threads, and SUS420J2 stainless steel rod material. Because the total stroke is 170 mm, side-load risks are moderate, but ensuring proper mounting alignment is critical. This SAIJ model supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
Quick checklist
The rear stopper screw lets you shorten the effective travel by up to 30 mm, creating a usable stroke window of 140 to 170 mm. This allows precise end-position tuning at commissioning without replacing the cylinder.
It operates at speeds between 30 and 800 mm/s.
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