This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X150S, 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 SI200X150S
The AirTAC SI200 Standard Cylinder SI200X150S 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 SAI200X150S, 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 → SAI200X150S
- 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 SI200X150S
The AirTAC SI200X150S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 150 mm stroke, delivering 15708 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI200X150S, a direct upgrade retaining the exact mounting interface, M36x2 rod thread, and 3204 kgf maximum force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also introduces SAIL and BSAI lock variants absent from the original SI line.
Airtac SI200 Standard Cylinder SI200X150S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X150S |
| 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 SAI200X150S 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 SAI200X150S 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 SI200X150S
| 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 SI200X150S Is Used
Heavy Press Clamping
Generates up to 3204 kgf theoretical force to secure large metal castings or heavy assemblies during machining and press operations.
Pallet Lift Actuation
Provides the robust 15708 N push at 0.5 MPa needed to elevate heavy loaded pallets or industrial lift platforms safely.
Large Mold Ejection
Delivers high impact thrust to break loose and eject dense industrial molds or composite parts from forming presses.
Replacing the Airtac SI200 Standard Cylinder SI200X150S with the SAI200X150S
To replace the SI200X150S, order the SAI200X200S equivalent, confirming the ISO 15552 mounting interface, 150 mm stroke, G3/4 port, and your specific mounting accessory (LB, FA, CA, TC). If 15708 N at 0.5 MPa is insufficient, step up pressure to achieve 21991 N at 0.7 MPa; if excess force is a concern, regulate down. A plain cylinder drifts on air loss because the 50 mm adjustable cushion only decelerates at stroke end, so specify an external pilot check valve or the SAIL/BSAI lock variant for held loads. Although 150 mm is short, always verify guide alignment to prevent rod bending under heavy 200 mm bore thrust. The -S magnet supports legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X150S
- ✓ 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 SI200X150S FAQ
Yes, the SI200X150S is discontinued. The direct replacement is the AirTAC SAI200X150S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 200 mm bore, 150 mm stroke, G3/4 port, and output force.
This 200 mm bore cylinder uses a G3/4 port. It 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 maximum force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X150S replacement — usually within 7-8 hours.