
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX550-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ100X550-75-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. This built-in adjustability allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops.
This SKU is configured with an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses a G1/2 port and achieves standard operating speeds of 30-800mm/s.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 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. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 475-550mm travel window during format size changes without mechanically swapping the actuator or repositioning hard stops.
Fine-tune the retract stroke by up to 75mm during machine commissioning to perfectly time the 3927N motion profile.
Use the integrated magnet with DMSE electronic sensors to confirm stroke endpoints on varying pallet sizes.
The adjustable 475-550mm travel window is ideal for production lines running mixed product sizes, letting you reposition the retract end-stop on the fly. Because the 550mm stroke is substantial, ensure adequate external guiding to prevent excessive side-loading on the rod.
This cylinder accepts PT tapered port threads and uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for pilot-operated locking, consider the SAIL or BSAI series. To replace an ISO 15552 cylinder, match the 100mm bore, 550mm stroke, 75mm adjustment, G1/2 port, and -S magnet.
Quick checklist
At 0.9 MPa, the push force increases to 7068N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from the 550mm nominal length down to 475mm. It sets the travel end but does not lock the load without continuous air pressure.
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