
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 70mm 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 SAIJ80X70-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning. It provides a usable travel window of 60-70 mm by dialing back the 70 mm nominal stroke by up to 10 mm. Delivering 2513 N of push force at 0.5 MPa, it handles robust actuation tasks. The extruded aluminum barrel features sensor grooves on both sides for flexible switch placement.
This specific SKU features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed or DMSE electronic sensors. It uses PT tapered port threads and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 70 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. |
| ×70 | 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 60-70 mm end position during machine commissioning without swapping cylinders or adding external stopper blocks.
Quickly adapt the stroke end-stop on packaging lines when processing different product sizes, using the 10 mm adjustment range.
Fine-tune the retract end position to absorb mechanical tolerances, ensuring precise placement of the 2513 N actuation force.
Choose this 80 mm bore if you need higher thrust than the 50 mm bore (982 N push at 0.5 MPa) but less than the 100 mm bore (3927 N). The adjustable stroke is ideal for applications requiring variable end stops or product-size changeovers, offering more setup flexibility than a fixed-stroke SAI cylinder. When matching ISO 15552 replacements, specify the 80 mm bore, 70 mm stroke, 10 mm adjustment, PT G3/8 port, and the -S magnet.
Because the stroke is under 300 mm, side-load stress is minimized, but the 25 mm rod and M20x1.5 thread still handle moderate side loads well. For applications requiring the load to be held mechanically without continuous air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead, as the SAIJ adjuster is not a locking device.
Quick checklist
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the nominal 70 mm stroke by up to 10 mm, creating a 60-70 mm usable travel window. It functions as a mechanical stop to fine-tune the end position and is not a load-holding lock.
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