This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX90S, 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 SI200BX90S
The AirTAC Airtac SI200 Standard Cylinder SI200BX90S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 90mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX90S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke90 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX90S
- 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 SI200BX90S
The AirTAC SI200BX90S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 90mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N of push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI200BX90S, a direct replacement sharing the exact ISO 15552 mounting interface, M36x2 rod thread, and 50mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This specific unit includes the -S magnet for CS1-B/DS1-B switches and the -B SUS304 stainless steel rod for corrosion resistance. Note that a plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SI200 Standard Cylinder SI200BX90S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX90S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX90S |
| Bore size | Ø200 mm |
| Stroke | 90 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 SAI200BX90S 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 SAI200BX90S 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 SI200BX90S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×90 | 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 SI200BX90S Is Used
Heavy Press Forming
Generates 15708 N at 0.5 MPa to form thick metal plates, utilizing the 90mm stroke for rapid, high-force press cycles.
Large Clamp Fixtures
Secures oversized composite molds during curing, providing stable 15080 N pull force at 0.5 MPa without side-play.
Replacing the Airtac SI200 Standard Cylinder SI200BX90S with the SAI200BX90S
To replace the discontinued SI200BX90S, order the SAI200BX90S. Confirm the ISO 15552 interface, 90mm stroke, G3/4 port, and mounting accessories match your fixture. The -S magnet enables legacy CS1-B/DS1-B sensors (the SAI uses current AirTAC switches), and the -B SUS304 rod handles corrosive environments. Because a plain cylinder does not hold load without live air (the cushion only decelerates), use an external rod lock or pilot check valve for safety, or specify the SAIL or BSAI lock variant. For sizing, dropping to a 160mm bore yields 10053 N push at 0.5 MPa, while staying at 200mm reaches 21991 N at 0.7 MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX90S
- ✓ 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 SI200BX90S FAQ
Yes, the SI200BX90S is discontinued. The direct replacement is the SAI200BX90S. It shares the identical ISO 15552 mounting interface, 200mm bore, 90mm stroke, output force, G3/4 port, and accessories, fitting directly into existing fixtures.
This double-acting cylinder uses a G3/4 air port. 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 maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX90S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX90S replacement — usually within 7-8 hours.