This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X700TC, 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 SI100X700TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 700mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X700TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X700TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 700mm stroke. It delivers a push force of 3927 N at 0.5 MPa (5497 N at 0.7 MPa) and features a G1/2 port. AirTAC replaced this legacy unit with the SAI100X700TC, a direct upgrade retaining the exact ISO 15552 mounting interface, TC trunnion mount, and output force.
The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note that this specific SKU lacks a magnet (-S) and therefore cannot accept position sensors like the legacy CS1-B/DS1-B switches.
| Model | Airtac SI100 Standard Cylinder SI100X700TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X700TC |
| Bore size | Ø100 mm |
| Stroke | 700 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 SAI100X700TC 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 SAI100X700TC 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. |
| ×700 | 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).
Drives large pallets or heavy workpieces along assembly lines, utilizing the 3927 N push force at 0.5 MPa to shift substantial loads over the 700mm travel distance.
Feeds bulky blanks into stamping presses, relying on the 100mm bore's 801 kgf maximum theoretical force and adjustable 36mm air cushions to decelerate at stroke ends.
To replace the discontinued SI100X700TC, order the SAI100X700TC. Confirm the ISO 15552 TC trunnion mounting interface, the 100mm bore, 700mm stroke, and the G1/2 port (available in PT, G, or NPT threads). Because this is a non-magnetized SKU, it cannot support switches; if sensing is needed, specify an SAI with the -S magnet option. When sizing, consider neighboring bores: an 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore provides 6136 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. Finally, at 700mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
Yes, the SI100X700TC is discontinued. The direct replacement is the SAI100X700TC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 700mm stroke, G1/2 port, TC mount, and output force, but features an upgraded Y-shaped piston seal for longer life.
The 100mm bore features a G1/2 air port and a 25mm piston rod. It delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X700TC replacement — usually within 7-8 hours.