This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X300SN, 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 SI200X300SN
The AirTAC SI200 Standard Cylinder SI200X300SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X300SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X300SN
- 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 SI200X300SN
The AirTAC SI200X300SN is a discontinued double-acting ISO 15552 profile cylinder. Delivering 15708 N push force at 0.5 MPa through a 200 mm bore and 300 mm stroke, it is replaced by the SAI200X300SN. This direct successor retains the exact mounting interface, G3/4 port, and output force, fitting existing fixtures seamlessly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The NBR seal handles -20 to +70 C, while Viton H extends this to 150 C. The SAI family also adds SAIL and BSAI lock variants absent from the SI line.
Airtac SI200 Standard Cylinder SI200X300SN Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X300SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X300SN |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAI200X300SN 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 SAI200X300SN 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 SI200X300SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SI200X300SN Is Used
Heavy Press Stamping
Drives large stamping presses requiring 15708 N of push force at 0.5 MPa to form thick metal components.
Mold Clamping Fixtures
Secures heavy industrial molds on machining centers, relying on the 40 mm rod and G3/4 air supply.
Replacing the Airtac SI200 Standard Cylinder SI200X300SN with the SAI200X300SN
To replace the SI200X300SN, order the SAI200X300SN. Confirm the ISO 15552 mounting interface, 200 mm bore, 300 mm stroke, G3/4 port, and NBR seal. The built-in magnet works with legacy CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. For sizing, the 160 mm neighbor yields 10053 N at 0.5 MPa, while the 200 mm bore hits 21991 N at 0.7 MPa. At 300 mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X300SN
- ✓ 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 SI200X300SN FAQ
Yes, the SI200X300SN is discontinued. The direct replacement is the SAI200X300SN. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 300 mm stroke, output force, G3/4 port, and mounting accessories.
The 200 mm bore delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s. It uses a G3/4 port and a 50 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X300SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X300SN replacement — usually within 7-8 hours.