
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX20-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 20mm 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.
Its 20mm nominal stroke can be dialed back by up to 20mm, providing a highly precise 0-20mm usable travel window for exact end-position tuning. This makes it exceptionally effective for short-stroke applications where exact endpoint positioning is critical.
This model features an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and carries PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides. If position detection is later required, adding an -S magnet allows the use of AirTAC CMSE reed or DMSE electronic solid-state sensors.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX20-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 20 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. |
| ×20 | 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.
Fine-tune the rear stopper during product changeovers to accommodate minor variations in part dimensions without swapping the entire cylinder.
Utilize the robust 25mm piston rod and high thrust output to reliably move and position heavy assemblies to a precise, adjustable mechanical endpoint.
Choose this 100mm bore cylinder when an application demands high thrust in a very compact stroke, requiring exact 0-20mm travel adjustment at commissioning without external stops. Because the rear adjuster acts only as a travel stop and the air cushions handle deceleration, this cylinder will not hold a load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI series cylinder. For a direct ISO 15552 dimensional replacement, match the 100mm bore, 20mm stroke, -20 adjustment, PT port, and standard mounting set.
Quick checklist
At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjuster screw allows you to trim the effective travel back by up to 20mm from the nominal 20mm stroke. This creates a 0-20mm usable travel window, letting you set the exact retracted end position during commissioning without adding external stops.
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