This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX280, 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 SI200BX280
The AirTAC Airtac SI200 Standard Cylinder SI200BX280 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 SAI200BX280, 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 → SAI200BX280
- 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 SI200BX280
The AirTAC SI200BX280 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 280 mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200BX280, matching the interface, force, and mounting exactly.
This SKU lacks a magnet (-S) and cannot accept a sensor. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. The -B rod is SUS304 stainless.
Airtac SI200 Standard Cylinder SI200BX280 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX280 |
| 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 SAI200BX280 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 SAI200BX280 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 SI200BX280
| 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 SI200BX280 Is Used
Heavy Press Forming
Applies up to 21991 N at 0.7 MPa for stamping and forming thick metal components in automated lines.
Pallet Transfer
Shifts heavy loaded pallets along conveyors, utilizing the 280 mm stroke to index large loads reliably.
Industrial Clamp
Secures large fabricated steel structures during welding or machining using the 3204 kgf maximum clamping force.
Replacing the Airtac SI200 Standard Cylinder SI200BX280 with the SAI200BX280
To replace the SI200BX280, order the SAI200BX280. Verify the ISO 15552 mounting interface, 280 mm stroke, G3/4 port, and SUS304 rod. Since this stroke is 280 mm, add external guide rails to prevent rod bending under side loads. A plain cylinder drifts on air loss; for load holding use an external pilot check valve or the SAIL/BSAI lock variants. If downsizing, neighbor bore 160 offers 10053 N push at 0.5 MPa. This no-magnet SKU cannot take CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX280
- ✓ 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 SI200BX280 FAQ
Yes, the SI200BX280 is discontinued. The direct replacement is the SAI200BX280. It is dimensionally interchangeable per ISO 15552, keeping the same 200 mm bore, 280 mm stroke, force, and G3/4 port.
It has a G3/4 port. Force output is 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 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 SAI200BX280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX280 replacement — usually within 7-8 hours.