This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X490S, 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 SI200X490S
The AirTAC SI200 Standard Cylinder SI200X490S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 490mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X490S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke490 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X490S
- 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 SI200X490S
The AirTAC SI200X490S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 15708 N push force at 0.5 MPa through a 200 mm bore and 490 mm stroke, it featured a 40 mm carbon steel rod, M36x2 thread, and a G3/4 air port. The direct replacement is the SAI200X490S, matching the interface, bore, stroke, force, and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked. This -S model has a magnet for CS1-B/DS1-B switches; the SAI uses current AirTAC switches.
Airtac SI200 Standard Cylinder SI200X490S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X490S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X490S |
| Bore size | Ø200 mm |
| Stroke | 490 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 SAI200X490S 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 SAI200X490S 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 SI200X490S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×490 | 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 SI200X490S Is Used
Heavy Press Forming
Applies the 15708 N push force at 0.5 MPa for forming and stamping large metal panels in automotive assembly lines.
Large Clamp Actuation
Drives robust clamping mechanisms on heavy machinery, relying on the 40 mm rod to maintain rigidity over the long travel.
Replacing the Airtac SI200 Standard Cylinder SI200X490S with the SAI200X490S
To replace the SI200X490S, order the SAI200X490S. Confirm the ISO 15552 mounting interface, 200 mm bore, 490 mm stroke, G3/4 port, and your mounting accessory. The -S suffix means a magnet for position sensing; the SAI takes current AirTAC switches. If you need more force, the only option is custom sizing, as 200 mm is the largest standard bore. If less force is acceptable, step down to a 160 mm bore (10053 N push at 0.5 MPa). For a 490 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X490S
- ✓ 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 SI200X490S FAQ
Yes, the SI200X490S is discontinued. The direct replacement is the SAI200X490S. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 490 mm stroke, G3/4 port, and mounting fixtures.
The 200 mm bore 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 of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X490S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X490S replacement — usually within 7-8 hours.