This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X150SFA, 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 SI200X150SFA
The AirTAC Airtac SI200 Standard Cylinder SI200X150SFA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 150mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X150SFA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke150 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X150SFA
- 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 SI200X150SFA
The AirTAC SI200X150SFA is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 150mm stroke. Delivering 15708 N of push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X150SFA. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force and FA flange, fitting existing fixtures perfectly. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For load holding, note that a standard cylinder drifts without live air; the cushion only decelerates. Use an external rod lock or pilot check valve, or specify the SAIL or BSAI lock variant.
The SAI family also adds SAIF and BSAI variants the SI lacked. Your -S suffix means a piston magnet for CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. Rod material options include carbon steel, SUS420J2 or SUS304, with Viton H seals for high heat.
Airtac SI200 Standard Cylinder SI200X150SFA Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X150SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X150SFA |
| Bore size | Ø200 mm |
| Stroke | 150 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 SAI200X150SFA 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 SAI200X150SFA 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 SI200X150SFA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×150 | 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 SI200X150SFA Is Used
Heavy Stamping
Drives large presses and stamping fixtures requiring up to 21991 N of thrust at 0.7 MPa, utilizing the rigid ISO 15552 interface for stable heavy-duty operation.
Clamp Actuation
Secures large fabricated components during machining or welding, providing reliable clamping force with adjustable 50 mm air cushions at both ends.
Replacing the Airtac SI200 Standard Cylinder SI200X150SFA with the SAI200X150SFA
To replace the discontinued SI200X150SFA, order the SAI200X150SFA. Confirm the ISO 15552 FA flange interface, 200mm bore, 150mm stroke, G3/4 port (PT/G/NPT thread) and the -S magnet. Sizing both ways: this 200mm bore yields 15708 N push at 0.5 MPa, while a neighbouring 160mm bore gives 10053 N. If your load needs holding on air loss, a plain cylinder drifts because the cushion only decelerates; add an external rod lock, a pilot check valve, or choose the SAIL or BSAI lock variant. For any stroke over 300mm, verify guide alignment to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X150SFA
- ✓ 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 SI200X150SFA FAQ
Yes, the AirTAC SI200X150SFA is discontinued. The direct replacement is the SAI200X150SFA. It shares the same ISO 15552 mounting interface, 200mm bore, 150mm stroke, output force, G3/4 port and FA flange, fitting your existing fixtures perfectly.
The 200mm bore double-acting cylinder delivers 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 max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, with a G3/4 port and M36x2 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X150SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X150SFA replacement — usually within 7-8 hours.