This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X125-75SFA, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75SFA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 125mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X125-75SFA, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X125-75SFA is a discontinued double-acting, double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 50-125 mm end position.
The direct replacement is the SAIJ100X125-75SFA, matching the ISO 15552 interface, force, and FA mount. The SAIJ upgrade uses a two Y-shaped one-way piston seal for lower start-up pressure. Note the stop screw sets end position; it is not a load lock.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X125-75SFA |
| Bore size | Ø100 mm |
| Stroke | 125 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X125-75SFA carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X125-75SFA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Dialing in precise bearing insertion depths on an assembly line, using the 75 mm adjust window to compensate for material variances without reprogramming the machine.
Adjusting the extend end position on the fly for different box heights, allowing a single cylinder to handle multiple packaging formats efficiently.
Setting exact product positioning on a conveyor by trimming the extend stroke by up to 75 mm on-site, accommodating various product widths accurately.
To replace this discontinued SIJ100X125-75SFA, order the direct replacement SAIJ100X125-75SFA, retaining the -S magnet for legacy CS1-B/DS1-B switches and the FA foot mount. The 75 mm adjust window is ideal for dialing in the 50-125 mm extend stroke without machining. Because the nominal stroke is 125 mm, the stroke>=300 side-load warning does not apply. Remember the stop screw is not a lock; for load holding on air loss, specify SAIL, BSAI, or an external rod lock.
Replacement checklist
Yes, the SIJ100X125-75SFA is discontinued. The direct replacement is the SAIJ100X125-75SFA, offering the same ISO 15552 interface, 100 mm bore, 125 mm stroke, 75 mm adjust window, G1/2 port, and FA mounting.
The external stop screw allows trimming the extend stroke by up to 75 mm on-site (usable 50-125 mm). Speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X125-75SFA replacement — usually within 7-8 hours.