
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX350-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 350mm 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 SAIJ100X350-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits you to dial back the nominal 350 mm travel by up to 50 mm. This yields a usable 300-350 mm end-position window, enabling exact retract tuning at commissioning without swapping out the unit.
Equipped with a SUS420J2 stainless steel rod (material code A) and a G1/2 PT port, this actuator handles demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. Note that the rear adjuster acts purely as a travel stop for deceleration alongside the variable air cushions; it does not hold the load without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX350-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 350 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. |
| ×350 | 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.
Quickly adapt the retract distance from 300 to 350 mm during packaging line changeovers to accommodate varying product widths without hardware swaps.
Fine-tune the stopping position of heavy pallets on a conveyor belt at commissioning, ensuring exact alignment without adding external mechanical stops.
Set precise lower-end travel limits on an assembly press, using the 50 mm adjustment window to dial in the exact contact depth for different component stacks.
Selecting this 100 mm bore over a smaller 80 mm bore significantly boosts output, stepping up push force at 0.5 MPa from 2513 N to 3927 N. Conversely, if your application only requires 1767 N at 0.5 MPa, stepping down to a 50 mm bore saves space and air consumption. You choose the SAIJ adjustable-stroke design over a fixed SAI cylinder when a machine requires variable end-stops or product-size changeovers, allowing on-the-fly retract position tuning.
Because the 350 mm stroke is substantial, the 25 mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is still recommended to prevent side-load damage over long unsupported travel. For replacing an ISO 15552 cylinder, match the 100 mm bore, 350 mm stroke, 50 mm adjustment, G1/2 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. This specific SKU lacks a magnet (-S), so position sensing requires adding a separate external sensor bracket or upgrading the piston assembly.
Quick checklist
At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the 350 mm nominal stroke by up to 50 mm, creating a usable travel window of 300 to 350 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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