This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X340S, 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 SI200X340S
The AirTAC SI200 Standard Cylinder SI200X340S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 340mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X340S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke340 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X340S
- 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 SI200X340S
The AirTAC SI200X340S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 340mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X340S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, port size and accessories.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For load holding, note that a standard cylinder drifts without live air; the cushion only decelerates. The SAI family also adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI200 Standard Cylinder SI200X340S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X340S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X340S |
| Bore size | Ø200 mm |
| Stroke | 340 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 SAI200X340S 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 SAI200X340S 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 SI200X340S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×340 | 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 SI200X340S Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 21991 N push at 0.7 MPa to deform thick plate stock securely.
Mold Clamping Station
Holds heavy injection molds in place using 28274 N force at 0.9 MPa, relying on external guides for the 340mm stroke.
Replacing the Airtac SI200 Standard Cylinder SI200X340S with the SAI200X340S
To replace the SI200X340S, order the SAI200X340S. Confirm the ISO 15552 mounting interface, the 340mm stroke, the G3/4 port, and your mounting accessory (LB, FA, CA, TC, etc.). The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. Sizing both ways: this 200mm bore yields 15708 N push at 0.5 MPa, while a neighbouring 160mm bore yields 10053 N. For 340mm strokes, use external guides to prevent rod bending and side-load damage. Because a plain cylinder does not hold load on air loss, choose the SAIL or BSAI lock variant, or add an external rod lock or pilot check valve for suspended loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X340S
- ✓ 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 SI200X340S FAQ
Yes, the SI200X340S is discontinued. The direct replacement is the SAI200X340S. It shares the identical ISO 15552 mounting interface, 200mm bore, 340mm stroke, output force, G3/4 port, and accessories, fitting existing fixtures perfectly.
This double-acting cylinder operates at 30-500 mm/s. 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 of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X340S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X340S replacement — usually within 7-8 hours.