This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX280S, 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 SI200AX280S
The AirTAC SI200 Standard Cylinder SI200AX280S 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 SAI200AX280S, 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 → SAI200AX280S
- 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 SI200AX280S
The AirTAC SI200AX280S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 280 mm stroke. It delivers 15708 N push and 15080 N pull at 0.5 MPa, operating at 30-500 mm/s through a G3/4 port. The direct replacement is the SAI200AX280S, matching the bore, stroke, M36x2 thread, 50 mm cushions and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This SI200AX280S has an A-code SUS420J2 stainless rod and an S magnet for CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200AX280S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX280S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX280S |
| 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 SAI200AX280S 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 SAI200AX280S 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 SI200AX280S
| 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 SI200AX280S Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 15708 N of thrust at 0.5 MPa, utilizing the 280 mm stroke to accommodate deep die tooling.
Industrial Automation
Actuates massive machinery components in heavy-duty automation cells, benefiting from the SUS420J2 stainless rod for corrosion resistance in harsh plant environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX280S with the SAI200AX280S
To replace the SI200AX280S, order the SAI200AX280S. Verify the ISO 15552 mounting interface, 200 mm bore, 280 mm stroke, G3/4 port, and the SUS420J2 stainless rod (-A) with magnet (-S). At 0.5 MPa it pushes 15708 N; if undersized, a 200 mm bore is the largest standard size, so increasing pressure to 0.7 MPa yields 21991 N. For 280 mm strokes, ensure guide rails to prevent rod bending under side loads. The air cushion only decelerates; it does not hold load on air loss. For held loads, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF valve variant is unavailable for bore 200.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX280S
- ✓ 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 SI200AX280S FAQ
Yes, the SI200AX280S is discontinued. The direct replacement is the SAI200AX280S. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 280 mm stroke, output force, G3/4 port, and mounting interface. The SAI features an upgraded two Y-shaped one-way piston seal for longer life and lower start-up pressure.
The SI200AX280S has a G3/4 air port. At 0.5 MPa it provides 15708 N push and 15080 N pull force. At 0.7 MPa the push force is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical maximum force is 3204 kgf at 1.0 MPa. It operates at 30-500 mm/s with a 50 mm adjustable cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX280S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX280S replacement — usually within 7-8 hours.