This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X300FB, 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 SI200X300FB
The AirTAC SI200 Standard Cylinder SI200X300FB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X300FB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X300FB
- 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 SI200X300FB
The AirTAC SI200X300FB is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 300 mm stroke. Delivering 15708 N of push force at 0.5 MPa through a G3/4 port, it is directly replaced by the SAI200X300FB. This direct upgrade shares the exact ISO 15552 mounting interface, FB flange, and M36x2 rod thread, dropping straight into existing heavy-duty fixtures.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this non-magnet SKU cannot accept a sensor; the legacy SI used CS1-B/DS1-B switches. For high heat, Viton H seals raise the operating range to 150 C.
Airtac SI200 Standard Cylinder SI200X300FB Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X300FB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X300FB |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAI200X300FB 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 SAI200X300FB 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 SI200X300FB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SI200X300FB Is Used
Heavy Stamp Pressing
Generates 21991 N at 0.7 MPa to form thick steel plates, utilizing the FB flange to withstand severe impact loads during high-tonnage stamping operations.
Industrial Press Brakes
Provides consistent 15708 N push force at 0.5 MPa for bending large structural beams, relying on the 50 mm adjustable air cushions to decelerate heavy tooling.
Replacing the Airtac SI200 Standard Cylinder SI200X300FB with the SAI200X300FB
To replace the SI200X300FB, order the SAI200X300FB. Confirm the ISO 15552 interface, 200 mm bore, 300 mm stroke, G3/4 port, and FB flange mounting. Because this is a non-S SKU, it cannot accept position sensors. If you need load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 300 mm stroke, use external guides to prevent rod bending under side loads. Sizing options: step down to bore 160 (10053 N push @0.5 MPa) or up to 1.0 MPa for 3204 kgf max force.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X300FB
- ✓ 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 SI200X300FB FAQ
Yes, the SI200X300FB is discontinued. The direct replacement is the SAI200X300FB. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 300 mm stroke, FB flange mount, and G3/4 port.
The G3/4 port feeds a 40 mm rod. Forces are: 15708 N push / 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X300FB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X300FB replacement — usually within 7-8 hours.