This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X320H, 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 SI200X320H
The AirTAC SI200 Standard Cylinder SI200X320H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 320mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X320H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke320 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X320H
- 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 SI200X320H
The AirTAC SI200X320H is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 320mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X320H. This direct successor shares the exact interface, M36x2 thread, and 50mm cushions, but adds an upgraded piston seal (two Y-shaped one-way elements for low start-up pressure). This SKU lacks a magnet (-S) and cannot take a sensor.
The -H designation indicates a Viton (FKM) seal, extending the operating temperature to 0-150 C. Note that standard cylinders drift without live air; use an external rod lock or pilot check valve for holding, or explore the SAI family's BSAI clamp-lock variant.
Airtac SI200 Standard Cylinder SI200X320H Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X320H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X320H |
| Bore size | Ø200 mm |
| Stroke | 320 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 SAI200X320H 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 SAI200X320H 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 SI200X320H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×320 | 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 SI200X320H Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 15708 N of thrust at 0.5 MPa, utilizing the 320mm stroke to cycle heavy tooling.
High-Tact Foundry
Actuates gates and heavy diverters in hot environments up to 150 C, leveraging the Viton H high-temperature seal and robust 40mm rod.
Replacing the Airtac SI200 Standard Cylinder SI200X320H with the SAI200X320H
To replace the SI200X320H, order the SAI200X320H. Confirm the ISO 15552 mounting interface, 200mm bore, 320mm stroke, G3/4 port, and high-temp Viton -H seal. Because this SKU lacks a magnet, it cannot accept CS1-B/DS1-B sensors. If sensing is required, specify an SAI model with the S option. When sizing, the 200mm bore yields 15708 N at 0.5 MPa; dropping to a 160mm bore gives 10053 N. For the 320mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder does not hold load on air loss; for secure holding, consider the SAIL lock or BSAI clamp-lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X320H
- ✓ 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 SI200X320H FAQ
Yes, the SI200X320H is discontinued. The direct replacement is the SAI200X320H. It is dimensionally interchangeable per ISO 15552, maintaining the same 200mm bore, 320mm stroke, 15708 N force, G3/4 port, and mounting interface.
The G3/4 port feeds a 40mm rod. Forces are: 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X320H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X320H replacement — usually within 7-8 hours.