This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX300, 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 SI200BX300
The AirTAC SI200 Standard Cylinder SI200BX300 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 SAI200BX300, 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 → SAI200BX300
- 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 SI200BX300
The AirTAC SI200BX300 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 300mm stroke. It delivers 15708N of push force at 0.5MPa via a G3/4 port. AirTAC replaced this legacy unit with the SAI200BX300, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and porting.
The SAI upgrade features a modernized piston seal using two Y-shaped one-way elements for lower start-up pressure and extended life. Note this SKU lacks a magnet (-S) and cannot accept a sensor; the legacy SI series used CS1-B/DS1-B switches. For high-heat environments, Viton H seals raise the operating ceiling to 150C, and a SUS304 stainless rod (option B) offers corrosion resistance.
Airtac SI200 Standard Cylinder SI200BX300 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX300 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX300 |
| 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 SAI200BX300 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 SAI200BX300 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 SI200BX300
| 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 SI200BX300 Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring up to 28274N of thrust at 0.9MPa, utilizing the 50mm adjustable cushions to absorb heavy impact at stroke ends.
Automated Assembly Lines
Actuates massive industrial fixtures and heavy pallet stops, where the 200mm bore provides the necessary force to move substantial payloads at 30-500 mm/s.
Replacing the Airtac SI200 Standard Cylinder SI200BX300 with the SAI200BX300
To replace the discontinued SI200BX300, order the SAI200BX300. Confirm the ISO 15552 mounting interface, 200mm bore, 300mm stroke, M36x2 rod thread, and G3/4 port (PT/G/NPT thread options). Because this SKU lacks a magnet, it cannot support position sensing; if switches are needed, specify an SAI model with the -S magnet option. Sizing both ways: the neighboring 160mm bore yields 10053N push at 0.5MPa, while the 200mm bore hits 21991N at 0.7MPa. A plain cylinder drifts on air loss—the 50mm air cushions only decelerate near stroke end, so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for held loads. At 300mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX300
- ✓ 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 SI200BX300 FAQ
Yes, the AirTAC SI200BX300 is discontinued and end-of-life. The direct replacement is the SAI200BX300. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 300mm stroke, output force, G3/4 port, and mounting accessories.
The 200mm bore utilizes a G3/4 air port. At 0.5MPa it provides 15708N push and 15080N pull force. At 0.7MPa push is 21991N, and at 0.9MPa it is 28274N. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX300
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX300 replacement — usually within 7-8 hours.