This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X100SH, 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 SI200 Standard Cylinder SI200X100SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 100mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X100SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X100SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 200 mm bore and 100 mm stroke. Built for heavy-duty cycles, it delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200X100SH, matching the bore, stroke, G3/4 port, and ISO 15552 mounting interface. This unit includes a high-temperature Viton H seal (0 to 150 C) and a piston magnet for legacy CS1-B/DS1-B sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds lock variants like the SAIL and BSAI that the original SI line lacked. Note that a standard cylinder needs live air to hold a load; the cushion only decelerates.
| Model | Airtac SI200 Standard Cylinder SI200X100SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X100SH |
| Bore size | Ø200 mm |
| Stroke | 100 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 SAI200X100SH 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 SAI200X100SH 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. |
| ×100 | 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 metal forming tools where the 21991 N push force at 0.7 MPa is required to stamp thick plate materials.
Ejects cast or molded parts from heated environments, utilizing the Viton H seal rated for 0 to 150 C.
To replace the discontinued SI200X100SH, order the SAI200X100SH. Confirm the ISO 15552 mounting interface, the 200 mm bore, 100 mm stroke, G3/4 port, and the high-temperature Viton H seal. The SAI is a direct dimensionally. If you need to upsize or downsize, neighboring bores are 160 mm and 125 mm. At 0.5 MPa, this 200 mm bore outputs 15708 N push and 15080 N pull. If your application requires load holding on air loss, do not rely on the air cushion; instead, specify an external pilot check valve or choose the SAIL or BSAI lock variant. Because this is a 200 mm bore, the operating speed is 30-500 mm/s.
Replacement checklist
Yes, the SI200X100SH is discontinued. The direct replacement is the SAI200X100SH. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 100 mm stroke, G3/4 port, and mounting fixtures.
This double-acting cylinder uses 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 maximum force of 3204 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X100SH replacement — usually within 7-8 hours.