This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X45, 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 SI200X45
The AirTAC Airtac SI200 Standard Cylinder SI200X45 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 45mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X45, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke45 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X45
- 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 SI200X45
The AirTAC SI200X45 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 45mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200X45, matching the exact interface, M36x2 thread, and 50mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. Note: this specific SKU lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor.
Airtac SI200 Standard Cylinder SI200X45 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X45 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X45 |
| Bore size | Ø200 mm |
| Stroke | 45 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 SAI200X45 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 SAI200X45 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 SI200X45
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×45 | 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 SI200X45 Is Used
Heavy Pressing
Drives large stamping and forming presses requiring 15708 N of thrust at 0.5 MPa.
Actuation
Operates heavy-duty industrial valves and large diverters needing a 200mm bore.
Replacing the Airtac SI200 Standard Cylinder SI200X45 with the SAI200X45
To replace the SI200X45, order the SAI200X45. Verify the ISO 15552 mounting interface, G3/4 port, and 45mm stroke. Because this SKU has no -S magnet, it cannot support position sensing; order a magnet-equipped SAI if switches are needed. The 200mm bore yields 15708 N push at 0.5 MPa; if less force is required, a 160mm bore provides 10053 N. For load holding on air loss, note that the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X45
- ✓ 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 SI200X45 FAQ
Yes, the SI200X45 is discontinued. The direct replacement is the AirTAC SAI200X45. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 45mm stroke, force, G3/4 port, and mounting fixtures.
The G3/4 port feeds a cylinder delivering 15708 N push and 15080 N pull at 0.5 MPa. At 0.7 MPa push is 21991 N, and 28274 N at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X45
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X45 replacement — usually within 7-8 hours.