This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX225, 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 SI200AX225
The AirTAC SI200 Standard Cylinder SI200AX225 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 225mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX225, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX225
- 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 SI200AX225
The AirTAC SI200AX225 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 225mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a 40mm rod, M36x2 thread, 50mm cushions, and a G3/4 port. The direct replacement is the SAI200AX225, matching the interface, force, and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU uses a SUS420J2 stainless rod (-A) and lacks a magnet, so it cannot take CS1-B/DS1-B sensors. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI200 Standard Cylinder SI200AX225 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX225 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX225 |
| Bore size | Ø200 mm |
| Stroke | 225 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 SAI200AX225 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 SAI200AX225 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 SI200AX225
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×225 | 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 SI200AX225 Is Used
Heavy Press Stamping
Generates 21991 N at 0.7 MPa for forming thick metal plates and heavy-duty industrial stamping tasks.
Large Mold Clamping
Provides reliable 15080 N pull force at 0.5 MPa to secure large injection molds and heavy tooling firmly.
Replacing the Airtac SI200 Standard Cylinder SI200AX225 with the SAI200AX225
To replace the SI200AX225, order the SAI200AX225. Verify the ISO 15552 mounting fixture, 225mm stroke, G3/4 port, and SUS420J2 rod. Because this SKU lacks a magnet (-S), it cannot accept position sensors; order a magnet-equipped SAI if sensing is needed. A plain cylinder drifts on air loss—cushions only decelerate. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 225mm stroke, guide external rods to prevent side-load bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX225
- ✓ 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 SI200AX225 FAQ
Yes, the SI200AX225 is discontinued. The direct replacement is the SAI200AX225. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 225mm stroke, G3/4 port, and 3204 kgf max force, fitting existing fixtures perfectly.
At 0.5 MPa it pushes 15708 N and pulls 15080 N. Push is 21991 N at 0.7 MPa, 28274 N at 0.9 MPa, with a 3204 kgf max at 1.0 MPa. Speed is 30-500 mm/s. The G3/4 port and 50mm cushions manage the high volume.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX225
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX225 replacement — usually within 7-8 hours.