This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX180, 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 SI200AX180
The AirTAC SI200 Standard Cylinder SI200AX180 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 180mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX180, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke180 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX180
- 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 SI200AX180
The AirTAC SI200AX180 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 180mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and a SUS420J2 stainless steel rod. The direct replacement is the SAI200AX180, matching the interface, force, and porting exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet and cannot take a sensor; legacy -S versions used CS1-B/DS1-B switches.
Airtac SI200 Standard Cylinder SI200AX180 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX180 |
| Bore size | Ø200 mm |
| Stroke | 180 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 SAI200AX180 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 SAI200AX180 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 SI200AX180
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×180 | 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 SI200AX180 Is Used
Heavy Press Systems
Generates 21991 N at 0.7 MPa for high-tonnage forming, stamping, and pressing tasks requiring a robust 200mm bore.
Stainless Rod Tooling
The SUS420J2 stainless rod option suits humid or mildly corrosive fabrication environments better than standard carbon steel.
Replacing the Airtac SI200 Standard Cylinder SI200AX180 with the SAI200AX180
To replace the SI200AX180, order the SAI200AX180. Confirm the ISO 15552 mounting interface, 200mm bore, 180mm stroke, G3/4 port (PT/G/NPT), and mounting accessory. This non-magnetic SKU cannot accept a sensor. If sizing down, the 160mm bore offers 10053 N push @0.5 MPa; if sizing up, verify fixture capacity. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL or BSAI lock variant. The SAI family also adds the SAIF valve option (bores 32-100). For any stroke over 300mm, guide the load to prevent rod bending and side-load wear. Operating pressure is 0.15-1.0 MPa; Viton H seals extend temperature to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX180
- ✓ 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 SI200AX180 FAQ
Yes, the SI200AX180 is discontinued. The direct replacement is the SAI200AX180. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 180mm stroke, G3/4 port, and mounting interface.
At 0.5 MPa it pushes 15708 N and pulls 15080 N. At 0.7 MPa push is 21991 N, and max theoretical force is 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s, with a 50mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX180 replacement — usually within 7-8 hours.