
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX165-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 165mm 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 SAIJ100X165-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 145-165 mm usable travel window, allowing you to dial back the 165 mm nominal stroke by up to 20 mm.
Equipped with a SUS420J2 stainless steel rod (option A) and PT tapered port threads, it offers excellent corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides. You can fit AirTAC CMSE reed or DMSE electronic sensors if position feedback is needed later. The rear adjuster acts purely as a travel stop to fine-tune end positions, not as a load-holding lock.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX165-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 165 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. |
| ×165 | 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 145-165 mm travel window during product size changes without physically swapping the actuator or adding external stopper blocks.
Fine-tune the retraction end position during commissioning to perfectly seat parts, using the rear screw rather than re-shimming the mount.
The adjustable stroke is highly beneficial for product changeovers, letting you set variable end-stops on the fly without swapping cylinders or adding external stops. For load-holding without live air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is a stop, not a brake.
This model is dimensionally interchangeable per ISO 15552. To match this replacement, verify the 100 mm bore, 165 mm stroke, 20 mm adjustment range, PT port threads, and the standard mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). At 165 mm stroke, side loads are minimal, but always ensure the piston rod is properly guided to prevent binding.
Quick checklist
A rear external stopper screw lets you trim the effective stroke by up to 20 mm, creating a usable travel window of 145 to 165 mm. It sets the end position mechanically but does not lock the load without live air pressure.
At 0.7 MPa, the push force increases to 5497 N.
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