This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X110, 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 SI200 Standard Cylinder SI200X110 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 110mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X110, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X110 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 110 mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X110 direct upgrade. This successor shares identical mounting, force, and port specs, but adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Because this specific SKU lacks the -S magnet suffix, it cannot accept a position sensor. The original SI family used CS1-B/DS1-B switches, but this non-magnetic variant cannot host them. Furthermore, a standard cylinder does not hold load on air loss; the 50 mm adjustable air cushions only decelerate the piston near stroke end. For load-holding needs, consider the SAIL or BSAI lock variants, or an external pilot check valve. High-temperature Viton H seals are also available.
| Model | Airtac SI200 Standard Cylinder SI200X110 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X110 |
| Bore size | Ø200 mm |
| Stroke | 110 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI200X110 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X110 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). |
|---|---|
| 200 | Bore size in mm. |
| ×110 | 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 heavy-duty stamping and forming presses requiring up to 3204 kgf theoretical max force at 1.0 MPa.
Secures large fabricated steel structures during welding, utilizing the 15080 N pull force at 0.5 MPa for rigid hold.
To replace the discontinued SI200X110, order the SAI200X110. Confirm the ISO 15552 mounting interface, 200 mm bore, 110 mm stroke, G3/4 port, and M36x2 rod thread. Since the stroke is under 300 mm, side-load rod-bending risks are minimal, but always verify guide alignment. Size both ways: the neighboring 160 mm bore yields 10053 N push at 0.5 MPa, while the 200 mm bore hits 21991 N at 0.7 MPa. This non-magnetic SKU cannot take a sensor; if position detection is needed, order an SAI200X110S. For load holding under air loss, the cushion only decelerates; use an external rod lock or the SAIL/BSAI lock variants. The SAI family also offers the SAIF self-valve variant for bores 32-100.
Replacement checklist
Yes, the AirTAC SI200X110 is discontinued. The direct replacement is the SAI200X110. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 110 mm stroke, G3/4 port, and mounting interface.
This double-acting cylinder features a G3/4 air port. It delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a theoretical max force of 3204 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X110 replacement — usually within 7-8 hours.