This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X275SH, 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 SI200X275SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X275SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X275SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 275mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200X275SH, matching the exact bore, stroke, output, port, and ISO 15552 mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This SI unit includes a -S magnet for CS1-B/DS1-B switches and a -H Viton seal rated for 0-150 C.
| Model | Airtac SI200 Standard Cylinder SI200X275SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X275SH |
| Bore size | Ø200 mm |
| Stroke | 275 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 SAI200X275SH 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 SAI200X275SH 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. |
| ×275 | 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 dies requiring 21991 N push force at 0.7 MPa with stable high-tonnage actuation.
Ejects cast or heated parts in a 0-150 C environment utilizing the Viton H seal and 40mm piston rod.
To replace the SI200X275SH, order the SAI200X275SH. Confirm the ISO 15552 mounting interface, 200mm bore, 275mm stroke, G3/4 port, and M36x2 rod thread. The -S magnet enables CS1-B/DS1-B sensors, while the -H option provides the Viton high-temperature seal. If downsizing, a 160mm bore yields 10053 N at 0.5 MPa; if upsizing is impossible, note this 200mm bore already hits the 3204 kgf max at 1.0 MPa. A plain cylinder drifts without live air, so for load holding use an external pilot check valve or the SAIL/BSAI lock variant. Since the 275mm stroke exceeds 300mm, ensure guide rails to prevent rod bending under side loads.
Replacement checklist
Yes, the SI200X275SH is discontinued. The direct replacement is the SAI200X275SH. It shares the same ISO 15552 mounting interface, 200mm bore, 275mm stroke, force, and G3/4 port, fitting existing fixtures perfectly.
The 200mm bore provides 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical max force is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X275SH replacement — usually within 7-8 hours.