This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X250H, 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 SI200X250H
The AirTAC SI200 Standard Cylinder SI200X250H 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 SAI200X250H, 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 → SAI200X250H
- 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 SI200X250H
The AirTAC SI200X250H is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 250mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N push force at 0.5 MPa and uses a G3/4 port with a 40mm rod. Because this legacy SI unit is end-of-life, you should order the direct replacement: the SAI200X250H. It matches the original ISO 15552 mounting interface, bore, stroke, force, and port size for a direct fixture swap.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This specific SKU lacks a magnet (-S), meaning it cannot accept CS1-B/DS1-B sensors. It includes the -H Viton seal option for 0-150 C environments.
Airtac SI200 Standard Cylinder SI200X250H Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X250H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X250H |
| 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 SAI200X250H 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 SAI200X250H 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 SI200X250H
| 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 SI200X250H Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N push force at 0.5 MPa, utilizing the 250mm stroke to form thick metal plates.
High-Temp Ejection
Ejects cast or hot-molded components in environments up to 150 C, leveraging the Viton H seal for reliable thermal resistance.
Replacing the Airtac SI200 Standard Cylinder SI200X250H with the SAI200X250H
To replace the discontinued SI200X250H, order the SAI200X250H. Verify your existing fixture matches the ISO 15552 mounting interface dimensions, the G3/4 air port, and the M36x2 rod thread. Because this non-magnetic SKU cannot hold a position switch, confirm if your control system requires sensing. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variants. At 250mm stroke, side-load risks are moderate, but ensure guide alignment to prevent rod bending. If downsizing, a 160mm bore yields 10053 N push at 0.5 MPa; if upsizing is needed, the 200mm bore is the largest standard option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X250H
- ✓ 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 SI200X250H FAQ
Yes, the AirTAC SI200X250H is discontinued. The direct replacement is the SAI200X250H. It shares the identical ISO 15552 mounting interface, 200mm bore, 250mm stroke, output force, and G3/4 port, fitting directly into your existing fixtures.
This 200mm bore cylinder uses a G3/4 air port. It generates 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 SAI200X250H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X250H replacement — usually within 7-8 hours.