This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X180, 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.
Airtac SI200 Standard Cylinder SI200X180
The AirTAC SI200 Standard Cylinder SI200X180 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 180mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X180, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke180 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X180
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI200 Standard Cylinder SI200X180
The AirTAC SI200X180 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 180 mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N of push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X180, a direct replacement retaining the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm adjustable air cushions.
Because this specific SKU lacks the -S magnet suffix, it cannot accept a position sensor. The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. If your application requires high-temperature operation, Viton H seals raise the operating range to 0-150 C.
Airtac SI200 Standard Cylinder SI200X180 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X180 |
| Bore size | Ø200 mm |
| Stroke | 180 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 SAI200X180 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X180 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI200 Standard Cylinder SI200X180
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×180 | 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).
Where the Airtac SI200 Standard Cylinder SI200X180 Is Used
Heavy Stamp Pressing
Drives large metal forming and stamping dies requiring up to 28274 N of push force at 0.9 MPa.
Industrial Clamp Rigs
Secures heavy fabrication components during welding or machining using the robust 40 mm piston rod.
Replacing the Airtac SI200 Standard Cylinder SI200X180 with the SAI200X180
To replace the discontinued SI200X180, order the SAI200X180. Confirm your ISO 15552 mounting accessory (LB foot, FA flange, or TC trunnion) and thread type (PT, G, or NPT) match. This non-magnetic SKU cannot hold a position switch; if sensing is needed, select an SAI200X180S and use current AirTAC switches. Sizing both ways: if dropping to a 160 mm bore reduces thrust to 10053 N push at 0.5 MPa, while staying at 200 mm yields 21991 N at 0.7 MPa. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. Since 180 mm is under 300 mm, rod-bending side loads are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X180
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI200 Standard Cylinder SI200X180 FAQ
Yes, the AirTAC SI200X180 is discontinued. The direct replacement is the SAI200X180. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 180 mm stroke, G3/4 port, and mounting interface, so it drops directly into existing fixtures.
The bore is 200 mm with a G3/4 air port. The thrust output is 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 of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X180 replacement — usually within 7-8 hours.