
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX155-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 155mm 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 SAIJ100X155-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 155 mm stroke with an impressive 100 mm adjustment range, giving you a usable travel window between 55 and 155 mm.
This variant uses a SUS420J2 stainless steel rod (option A) for better corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for adding CMSE reed or DMSE electronic switches. Remember that the rear adjuster acts purely as a travel stop to set deceleration, not as a lock; for load-holding without live air, look to the SAIL or BSAI series.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 155 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. |
| ×155 | 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 exact retraction point between 55 and 155 mm during machine commissioning to accommodate new fixture lengths without adding external stopper blocks.
Quickly adjust the travel distance on packaging lines that handle varying package dimensions, utilizing the full 100 mm trim range to switch between product profiles.
The massive 100 mm adjustment window is ideal for machines processing multiple product sizes, letting you dial back the stroke from 155 mm down to 55 mm during changeovers rather than installing external stops or a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify bore 100, stroke 155, 100 mm adjustment, PT ports, and no magnet.
Because the stroke is 155 mm, the 25 mm piston rod and M20x1.5 rod thread handle side loads well, but any long unsupported travel still requires an external guide to prevent binding. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back by up to 100 mm from the 155 mm nominal stroke, creating a usable 55 to 155 mm window. It sets the travel end and deceleration point but does not lock or hold the load without live air pressure.
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