This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX280, 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 SI200AX280
The AirTAC SI200 Standard Cylinder SI200AX280 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 280mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX280, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX280
- 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 SI200AX280
The AirTAC SI200AX280 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 280mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200AX280. This direct successor shares identical mounting, force, and port specs, but adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. This specific SKU features a SUS420J2 stainless steel rod (A suffix) for corrosion resistance and lacks a magnet, meaning it cannot accept position sensors.
Note that a plain cylinder drifts without live air; the 50 mm adjustable cushions only decelerate near stroke ends. For secure load holding, consider an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI200 Standard Cylinder SI200AX280 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX280 |
| Bore size | Ø200 mm |
| Stroke | 280 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 SAI200AX280 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 SAI200AX280 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 SI200AX280
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×280 | 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 SI200AX280 Is Used
Heavy Press Clamping
Secures large metal stamping blanks with 21991 N push force at 0.7 MPa, utilizing the SUS420J2 stainless rod to resist coolant corrosion.
Mold Ejection Systems
Pushes heavy industrial molds out of casting machines, using the 50mm adjustable cushions to decelerate the 3204 kgf max thrust at stroke end.
Replacing the Airtac SI200 Standard Cylinder SI200AX280 with the SAI200AX280
To replace the SI200AX280, order the SAI200AX280 to retain the exact ISO 15552 mounting interface, 200mm bore, 280mm stroke, and G3/4 port. Because this SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if position detection is needed, select an SAI200X280S and current AirTAC switches. Sizing down, a 160mm bore offers 10053 N push @0.5 MPa; sizing up is not available in this range. For 280mm strokes, ensure guide rails carry side loads to prevent rod bending. If the application requires holding a load on air loss, the standard cylinder will drift—use an external rod lock or the SAIL/BSAI variants. The Viton H seal option extends operating temperature to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX280
- ✓ 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 SI200AX280 FAQ
Yes, the SI200AX280 is discontinued. The direct replacement is the SAI200AX280. It shares the same ISO 15552 mounting interface, 200mm bore, 280mm stroke, force, and G3/4 port, fitting existing fixtures perfectly while upgrading the piston seal.
This 200mm bore cylinder features a G3/4 air port and M36x2 rod thread. 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 max force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX280 replacement — usually within 7-8 hours.