
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX220-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 220mm 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 SAIJ80X220-75 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 145-220 mm usable travel window by allowing you to trim the nominal 220 mm stroke back by up to 75 mm.
This variant uses a SUS420J2 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE electronic switches. The rear adjuster acts purely as a mechanical stop to fine-tune end positions at commissioning; it does not lock the load, so live air is required to hold position.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX220-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 220 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. |
| ×220 | 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 145-220 mm travel window during format changes on packaging lines without replacing the cylinder or repositioning hard stops.
Fine-tune the retract end-position during initial machine setup to absorb mechanical tolerances and achieve exact positioning.
Adjust the stroke dynamically for multi-format assembly processes that require different retract distances on the same fixture.
Choose this 80 mm bore when a 50 mm bore falls short on power (982 N at 0.5 MPa) but a 100 mm bore is excessive (3927 N at 0.5 MPa). The 75 mm adjustment range is ideal for machinery that requires frequent product changeovers, allowing you to redefine the retract end-stop without swapping cylinders or adding external stops. For fixed travel needs, a standard SAI cylinder is simpler, but the SAIJ excels when setup tolerances must be dialed in on the machine.
Because the 220 mm stroke is relatively long, ensure external guides are used to manage side-load stresses on the 25 mm rod. This SAIJ model is dimensionally interchangeable per ISO 15552 and supports the reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. If your application requires true load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
Quick checklist
The rear adjuster screw acts as a mechanical stop that lets you shorten the 220 mm nominal stroke by up to 75 mm, creating a 145-220 mm usable travel window. It only decelerates and sets the end position; it does not lock the load, so continuous air pressure is needed to hold position.
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