
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX900-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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 SAIJ100X900-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 870 to 900 mm, allowing you to trim the nominal 900 mm stroke by up to 30 mm during machine setup. This bore delivers substantial thrust, pushing 5497 N at 0.7 MPa and 7068 N at 0.9 MPa.
The barrel is extruded aluminum with sensor grooves on both sides for flexible switch placement. This specific configuration uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered ports. The rear adjustment screw acts purely as a mechanical stop to set the end position; it does not hold the load without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX900-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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. |
| ×900 | 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 870-900 mm travel window during product size transitions without swapping the cylinder or adding external stops.
Fine-tune the exact retract distance at commissioning using the rear screw to perfect the pickup or placement point.
Adjust the stroke on the fly to accommodate varying package sizes on a moving line, ensuring precise stops.
An adjustable stroke is preferred over a fixed SAI cylinder when you need to fine-tune end positions during commissioning or accommodate product changeovers without adding external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
At a 900 mm stroke, the 25 mm diameter rod and M20x1.5 thread provide robust support, but an external guide is strongly recommended to prevent side-loading damage on this long unsupported travel. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
Quick checklist
The rear adjuster acts as a mechanical stop that trims the effective stroke by up to 30 mm, giving you a usable travel window of 870 to 900 mm. It sets the end position but does not lock or hold the load without live air pressure.
The pull force at 0.5 MPa is 3681 N.
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