This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-10S, 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 SIJ100X75-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X75-10S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X75-10S 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 10 mm on-site, yielding a usable 65-75 mm extend out of the 75 mm nominal maximum.
Because this SIJ model is discontinued, the direct replacement is the SAIJ100X75-10S, retaining the same ISO 15552 mounting interface, bore, force, and adjust window. The SAIJ upgrade incorporates an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-10S |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100X75-10S 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 SAIJ100X75-10S 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. |
| ×75 | 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 a 65-75 mm insertion depth for bearing press fits, using the 10 mm on-site adjust to compensate for material tolerances without swapping cylinders.
Setting precise product stop positions on a conveyor line where the exact 65-75 mm extend point must be tuned during commissioning to match upstream tooling.
To replace the discontinued SIJ100X75-10S, order the direct replacement SAIJ100X75-10S, which matches the 100 mm bore, 75 mm stroke, 10 mm adjust window, G1/2 port, and ISO 15552 mounting. The 10 mm adjust window is ideal for fine-tuning the 65-75 mm extend distance without adding an external stop. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAIJ replacement uses current AirTAC switches). For this 75 mm stroke, side-load is minimal, but for any stroke over 300 mm, carefully guide the rod to prevent binding.
Replacement checklist
Yes, the SIJ100X75-10S is discontinued. The direct replacement is the SAIJ100X75-10S. It shares the identical ISO 15552 interface, 100 mm bore, 75 mm stroke, 10 mm adjust window, and G1/2 port, but adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 10 mm adjust window, allowing you to trim the 75 mm nominal extend stroke down to 65 mm on-site. This stop sets the end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-10S replacement — usually within 7-8 hours.