
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX950-20S 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-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the 950 mm nominal stroke by up to 20 mm, creating a precise 930-950 mm usable travel window. This fine-tuning capability is ideal for commissioning setups and product changeovers without swapping the cylinder or adding external stops. It delivers robust force, pushing 5497 N at 0.7 MPa and 7068 N at 0.9 MPa.
This model is configured with a SUS420J2 stainless steel rod (code A) for enhanced durability against lateral stress and moisture, paired with PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports precise position detection using AirTAC CMSE reed and DMSE electronic solid-state switches. It operates at speeds of 30-800 mm/s.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX950-20S |
|---|---|
| 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 travel window during product size changes without replacing the cylinder or bolting on external physical stops.
Actuate long-travel sorting gates or diverters on conveyor lines, using the rear stopper to fine-tune the exact resting position.
Perfect the retract end-position during commissioning to compensate for mechanical tolerance stack-up across a 950 mm stroke.
The SAIJ100X950-20-S is selected specifically when a fixed-stroke SAI cylinder cannot accommodate minor mechanical variations or end-position tweaks during machine setup. The rear adjuster acts purely as a travel stop and deceleration point, meaning it will not hold the load without live air pressure; for true load-holding, consider the SAIL pneumatic lock or BSAI clamp-lock cylinders.
Because the 950 mm stroke is substantial, the 25 mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide rail is strongly recommended to prevent excessive side-loading on the piston. As a dimensionally interchangeable ISO 15552 cylinder, it uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts.
Quick checklist
At 0.9 MPa, the push force increases to 7068 N, with a maximum push force of 801 kgf at 1.0 MPa.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke by up to 20 mm, providing a usable travel window of 930 to 950 mm. It is a travel stop, not a lock, and does not hold the load without live air pressure.
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