
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX950-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 950mm 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 SAIJ100X950-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 930-950 mm usable travel window, allowing you to dial back the nominal 950 mm stroke by up to 20 mm during commissioning without adding external stops.
This unit is built with a SUS420J2 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet. The rear adjuster acts purely as a mechanical stop to set the end position, meaning it will not hold the load dynamically without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX950-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 950 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. |
| ×950 | 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 930-950 mm stroke window instantly when switching product sizes on a line, eliminating the need to physically swap cylinders for varying length requirements.
Provides 20 mm of external adjustment at the rear cap, allowing engineers to perfect the end-stop location during setup without disassembling the fixture.
Choose this 100 mm bore when your application requires significantly more thrust than the 80 mm bore (which provides 2513 N at 0.5 MPa), but less than the massive 6136 N generated by the 125 mm class. The adjustable stroke is ideal for product changeovers where the exact end-of-travel position needs frequent fine-tuning, saving you from physically swapping out a fixed-stroke SAI cylinder.
Because this cylinder features a 950 mm stroke, the 25 mm rod diameter and M20x1.5 rod thread will experience leverage forces if the load is unsupported. An external guide rail is strongly recommended to prevent side-loading damage. To replace an ISO 15552 cylinder, match the 100 mm bore, 950 mm stroke, 20 mm adjustment, PT port, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). For load-holding without live pressure, consider the SAIL or BSAI series instead.
Quick checklist
If operated at 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the effective travel from 950 mm down to 930 mm. It sets the end position but does not lock the load; live air pressure is still required to hold the load in place.
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