This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X300S, 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 SI200X300S
The AirTAC SI200 Standard Cylinder SI200X300S 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 SAI200X300S, 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 → SAI200X300S
- 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 SI200X300S
The AirTAC SI200X300S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 300mm stroke, delivering 15708 N push force at 0.5 MPa through its G3/4 port. As an end-of-life product, it is replaced directly by the SAI200X300S. This direct successor maintains the exact ISO 15552 mounting interface, M36x2 rod thread, and 50mm adjustable air cushions, fitting existing fixtures seamlessly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SI200X300S includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family adds lock and valve variants (SAIL, BSAI) absent in the original line.
Airtac SI200 Standard Cylinder SI200X300S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X300S |
| 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 SAI200X300S 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 SAI200X300S 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 SI200X300S
| 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 SI200X300S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring up to 21991 N of push force at 0.7 MPa with stable 50mm cushioning.
Pallet Lift Station
Raises loaded industrial pallets using the 15080 N pull force at 0.5 MPa, relying on external guides for the 300mm stroke.
Replacing the Airtac SI200 Standard Cylinder SI200X300S with the SAI200X300S
To replace the SI200X300S, order the SAI200X300S, confirming the ISO 15552 mounting interface, G3/4 port, and -S magnet for current AirTAC switches. If downsizing, a 160mm bore yields 10053 N at 0.5 MPa; if upsizing is impossible, this 200mm bore already maxes out the standard range. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. Because the 300mm stroke invites rod bending, use external guides to prevent side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X300S
- ✓ 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 SI200X300S FAQ
Yes, the SI200X300S is discontinued. The direct replacement is the SAI200X300S. It shares the identical ISO 15552 mounting interface, 200mm bore, 300mm stroke, G3/4 port, and output force, dropping straight into existing fixtures.
The SI200X300S 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 force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X300S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X300S replacement — usually within 7-8 hours.