This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX950S, 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 SI200BX950S
The AirTAC Airtac SI200 Standard Cylinder SI200BX950S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 950mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX950S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke950 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX950S
- 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 SI200BX950S
The AirTAC SI200BX950S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 950mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200BX950S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force, and accessories, fitting existing fixtures perfectly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This specific unit includes a SUS304 stainless piston rod (-B) and a magnet (-S) for CS1-B/DS1-B sensors. For load holding, note that cushions only decelerate; use an external rod lock or SAIL/BSAI variant.
Airtac SI200 Standard Cylinder SI200BX950S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX950S |
| Bore size | Ø200 mm |
| Stroke | 950 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 SAI200BX950S 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 SAI200BX950S 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 SI200BX950S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×950 | 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 SI200BX950S Is Used
Heavy Press Systems
Generates 21991 N at 0.7 MPa for high-force stamping and forming operations, utilizing the 50mm adjustable cushions to decelerate massive moving tooling.
Automated Welding Jigs
Actuates large clamps over a 950mm span; external guides are mandatory here to prevent rod bending and maintain precise weld alignment.
Replacing the Airtac SI200 Standard Cylinder SI200BX950S with the SAI200BX950S
To replace the SI200BX950S, order the SAI200BX950S, confirming the ISO 15552 mounting interface, 200mm bore, 950mm stroke, G3/4 port, and magnet (-S) for CS1-B/DS1-B switches. The SAI family also adds SAIL, SAIF, and BSAI lock/valve variants. For sizing, a 160mm bore yields 10053 N push at 0.5 MPa, while stepping up is not possible as 200mm is the largest. At 950mm, this long stroke requires external guides to prevent rod bending and side-load damage. Plain cylinders drift without air; for held loads use a pilot check valve or SAIL lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX950S
- ✓ 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 SI200BX950S FAQ
Yes, the SI200BX950S is discontinued. The direct replacement is the SAI200BX950S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 950mm stroke, G3/4 port, and mounting interface.
It features a G3/4 port and M36x2 rod thread. Force output is 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 SAI200BX950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX950S replacement — usually within 7-8 hours.