This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X250, 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 SI200X250
The AirTAC SI200 Standard Cylinder SI200X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X250
- 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 SI200X250
The AirTAC SI200X250 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 250 mm stroke. Delivering 15708 N of push force at 0.5 MPa through a G3/4 port, it is replaced by the SAI200X250. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, and force, dropping straight into existing fixtures.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this SKU lacks the -S magnet and cannot accept a CS1-B/DS1-B sensor. For high-heat environments, Viton H seals raise the operating range to 0-150 C.
Airtac SI200 Standard Cylinder SI200X250 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X250 |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAI200X250 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 SAI200X250 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 SI200X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SI200X250 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa with robust 250 mm travel.
Industrial Mold Clamping
Secures oversized injection molds on large machinery using the 3204 kgf theoretical maximum force at 1.0 MPa.
Replacing the Airtac SI200 Standard Cylinder SI200X250 with the SAI200X250
To replace the SI200X250, order the SAI200X250. Verify your ISO 15552 mounting interface (LB, FA, FB, CA, CB, TC), the G3/4 air port, and the M36x2 rod thread. Because this SKU has no -S magnet, it cannot support position sensing; if switches are needed, select an SAI200X250S and use current AirTAC switches. Sizing both ways: a neighbouring 160 mm bore yields 10053 N push at 0.5 MPa, while stepping up is unnecessary if 15708 N suffices. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. At 250 mm stroke, side-load and rod-bending risks are minimal, but ensure guide alignment to protect the 40 mm rod.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X250
- ✓ 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 SI200X250 FAQ
Yes, the SI200X250 is discontinued. The direct replacement is the SAI200X250. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 250 mm stroke, 15708 N force, 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 at 0.9 MPa it is 28274 N. The theoretical max force is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, and the air cushion travel is 50 mm.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X250
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X250 replacement — usually within 7-8 hours.