This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X250FTC, 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 SI200X250FTC
The AirTAC Airtac SI200 Standard Cylinder SI200X250FTC 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 SAI200X250FTC, 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 → SAI200X250FTC
- 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 SI200X250FTC
The AirTAC SI200X250FTC is a discontinued double-acting ISO 15552 profile cylinder with a 250 mm stroke, delivering 15708 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI200X250FTC. This current-production direct maintains the exact ISO 15552 mounting interface, 200 mm bore, FTC trunnion mount, and G3/4 port, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Since this specific SKU lacks the -S magnet, it cannot accept a position switch like the legacy CS1-B/DS1-B sensors. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the SI line.
Airtac SI200 Standard Cylinder SI200X250FTC Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X250FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X250FTC |
| 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 SAI200X250FTC 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 SAI200X250FTC 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 SI200X250FTC
| 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 SI200X250FTC Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 15708 N push force at 0.5 MPa, utilizing the 250 mm stroke to actuate heavy tooling.
Mold Clamping
Secures industrial injection molds within large machinery, where the 200 mm bore provides the 28274 N force needed at 0.9 MPa.
Replacing the Airtac SI200 Standard Cylinder SI200X250FTC with the SAI200X250FTC
To replace the SI200X250FTC, order the SAI200X250FTC, confirming the ISO 15552 interface, 200 mm bore, 250 mm stroke, G3/4 port, and FTC trunnion mounting. This non-magnet SKU cannot support switches. For sizing alternatives, neighboring bores like 160 mm offer 10053 N push at 0.5 MPa, while the 200 mm bore hits 21991 N at 0.7 MPa. Because the stroke is 250 mm, ensure adequate guide support to prevent rod bending under side loads. A plain cylinder drifts on air loss; the 50 mm cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X250FTC
- ✓ 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 SI200X250FTC FAQ
Yes, the SI200X250FTC is discontinued. The direct replacement is the SAI200X250FTC. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 250 mm stroke, G3/4 port, and FTC trunnion mount.
It features a G3/4 port and delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X250FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X250FTC replacement — usually within 7-8 hours.