This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX200TC, 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 Airtac SI100 Standard Cylinder SI100AX200TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX200TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100AX200TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 200mm stroke. Built with an extruded aluminum barrel and adjustable air cushions (36mm) at both ends, it delivers a push force of 3927N at 0.5MPa. This specific SKU features a SUS420J2 stainless steel piston rod (A option) for corrosion resistance and a TC trunnion mount. As a non-magnet model, it cannot accept position sensors.
Because the SI line is end-of-life, you should order the SAI100AX200TC direct replacement. It shares the exact ISO 15552 mounting interface, G1/2 port, and 801kgf max force. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
| Model | Airtac SI100 Standard Cylinder SI100AX200TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX200TC |
| Bore size | Ø100 mm |
| Stroke | 200 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 SAI100AX200TC 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 SAI100AX200TC 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. |
| ×200 | 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).
Applies 5497N of push force at 0.7MPa to secure heavy sheet metal or composite panels during machining and stamping operations.
Uses the TC trunnion mount to pivot and index loaded pallets up to 200kg, leveraging the 100mm bore for stable vertical lift.
The SUS420J2 stainless rod option provides necessary corrosion resistance for actuating gates or diverters in wet manufacturing environments.
To replace the SI100AX200TC, order the SAI100AX200TC. Verify your ISO 15552 TC trunnion mounting dimensions, 200mm stroke, G1/2 port threads, and the SUS420J2 stainless rod requirement. If you need position sensing, note this non-magnet SKU cannot take a switch; you must select an SAI equivalent with the S (magnet) suffix to use current AirTAC switches. Sizing both ways: the 100mm bore yields 3927N push at 0.5MPa (5497N at 0.7MPa). If you need less force, an 80mm bore provides 2513N push at 0.5MPa; if you need more, a 125mm bore offers 6136N. Remember, a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
Yes, the SI100AX200TC is discontinued. The direct replacement is the SAI100AX200TC. It is dimensionally interchangeable per ISO 15552, retaining the same TC mount, 100mm bore, 200mm stroke, G1/2 port, and output force.
The air port is G1/2. The force ratings are: 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX200TC replacement — usually within 7-8 hours.