This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X250SFA, 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 SI200X250SFA
The AirTAC Airtac SI200 Standard Cylinder SI200X250SFA 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 SAI200X250SFA, 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 → SAI200X250SFA
- 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 SI200X250SFA
The AirTAC SI200X250SFA is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 250mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it featured an FA flange mounting and a magnetic piston for CS1-B/DS1-B sensors. AirTAC replaced this legacy unit with the SAI200X250SFA.
The SAI200X250SFA is a direct replacement matching the exact ISO 15552 mounting interface, M36x2 thread, and 50mm cushions. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure.
Airtac SI200 Standard Cylinder SI200X250SFA Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X250SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X250SFA |
| 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 SAI200X250SFA 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 SAI200X250SFA 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 SI200X250SFA
| 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 SI200X250SFA Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 15708 N of push force at 0.5 MPa to deform thick plate stock.
Mold Clamping Stations
Secures large injection molds along the 250mm stroke, relying on the 50mm adjustable air cushions to decelerate.
Replacing the Airtac SI200 Standard Cylinder SI200X250SFA with the SAI200X250SFA
To replace the SI200X250SFA, order the SAI200X250SFA. Confirm the ISO 15552 FA flange interface, 200mm bore, 250mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. If you need less force, dropping to a 160mm bore yields 10053 N push at 0.5 MPa; stepping up is unnecessary as 200mm already provides 21991 N at 0.7 MPa. A plain cylinder drifts without live air, so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. At 250mm stroke side-load is minimal, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X250SFA
- ✓ 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 SI200X250SFA FAQ
Yes, the SI200X250SFA is discontinued. The direct replacement is the SAI200X250SFA, which shares the identical ISO 15552 mounting interface, 200mm bore, 250mm stroke, G3/4 port, and force ratings.
At 0.5 MPa it pushes 15708 N and pulls 15080 N. At 0.7 MPa push is 21991 N, and the theoretical max is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X250SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X250SFA replacement — usually within 7-8 hours.