This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X20, 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 SI200X20
The AirTAC Airtac SI200 Standard Cylinder SI200X20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X20
- 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 SI200X20
The AirTAC SI200X20 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 20 mm stroke. It delivers 15708 N of push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X20, a direct replacement retaining the exact interface, M36x2 rod thread, and 50 mm cushions. The SAI upgrade features a new two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnet SKU cannot accept a sensor.
The SAI family also introduces lock and valve variants the SI lacked, such as the SAIL, SAIF, and BSAI models. Buyers needing high-temperature seals can specify Viton H for 0-150 C operation instead of the standard -20 to +70 C range.
Airtac SI200 Standard Cylinder SI200X20 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X20 |
| Bore size | Ø200 mm |
| Stroke | 20 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 SAI200X20 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 SAI200X20 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 SI200X20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×20 | 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 SI200X20 Is Used
Heavy Stamping Press
Generates 21991 N at 0.7 MPa for forming thick metal plates in automated fabrication lines.
Injection Mold Clamp
Holds heavy industrial molds shut using the 50 mm adjustable cushions to absorb end-of-stroke impact.
Replacing the Airtac SI200 Standard Cylinder SI200X20 with the SAI200X20
To replace the SI200X20, order the SAI200X20. Verify your ISO 15552 mounting fixture, the 200 mm bore, 20 mm stroke, and G3/4 port. Because this specific SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. If sensing is required, order the SAI equivalent with an S suffix. For loads near the 3204 kgf maximum, consider neighbouring bores; the 160 mm bore offers 10053 N push at 0.5 MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. Stroke is under 300 mm, so rod-bending side loads are minimal, but ensure rigid guidance for the 801 kg vertical lift capacity.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X20
- ✓ 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 SI200X20 FAQ
Yes, the SI200X20 is discontinued. The direct replacement is the SAI200X20. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 20 mm stroke, output force, G3/4 port, and mounting accessories.
It features a G3/4 port and provides a push force of 15708 N and pull of 15080 N at 0.5 MPa. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical max force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X20
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X20 replacement — usually within 7-8 hours.