This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X390, 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 SI200X390
The AirTAC SI200 Standard Cylinder SI200X390 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 390mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X390, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke390 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X390
- 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 SI200X390
The AirTAC SI200X390 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 390mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X390. This direct successor shares identical mounting, stroke, and force specs, fitting existing fixtures perfectly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also adds SAIL and BSAI lock variants absent in the SI line. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200X390 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X390 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X390 |
| Bore size | Ø200 mm |
| Stroke | 390 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 SAI200X390 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 SAI200X390 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 SI200X390
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×390 | 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 SI200X390 Is Used
Heavy Press Systems
Drives large stamping and forming presses requiring up to 15708 N of push force at 0.5 MPa with stable 390mm travel.
Large Material Handling
Actuates heavy-duty diverter gates and positioning stops in high-capacity manufacturing and warehouse environments.
Replacing the Airtac SI200 Standard Cylinder SI200X390 with the SAI200X390
To replace the SI200X390, order the SAI200X390. Confirm the ISO 15552 interface, 390mm stroke, G3/4 port (PT/G/NPT), and mounting accessory. Because this 390mm stroke exceeds 300mm, use external guides to prevent rod bending and side-load damage. For sizing, neighbouring bores shift force significantly; at 0.5 MPa this 200mm bore yields 15708 N push and 15080 N pull. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Since this SKU has no magnet, sensing is impossible; order a -S version if switches are needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X390
- ✓ 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 SI200X390 FAQ
Yes, the SI200X390 is discontinued. The direct replacement is the SAI200X390. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 390mm stroke, output force, G3/4 port, and mounting interface.
It features a G3/4 port and delivers 15708 N push / 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X390
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X390 replacement — usually within 7-8 hours.