This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X680, 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 SI200X680
The AirTAC Airtac SI200 Standard Cylinder SI200X680 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 680mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X680, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke680 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X680
- 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 SI200X680
The AirTAC SI200X680 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 680 mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X680. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This non-magnet SKU cannot take a sensor, unlike legacy CS1-B/DS1-B switches. The SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked. Note that a plain cylinder drifts on air loss; the 50 mm cushions only decelerate. For load holding, use an external rod lock or pilot check valve. With a 680 mm stroke, external guides are recommended to prevent rod bending.
Airtac SI200 Standard Cylinder SI200X680 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X680 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X680 |
| Bore size | Ø200 mm |
| Stroke | 680 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 SAI200X680 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 SAI200X680 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 SI200X680
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×680 | 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 SI200X680 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N push force at 0.5 MPa, utilizing the 680 mm stroke to clear deep tooling.
Large Mold Clamping
Secures oversized injection molds using 3204 kgf maximum theoretical force at 1.0 MPa, ensuring rigid hold during processing.
Replacing the Airtac SI200 Standard Cylinder SI200X680 with the SAI200X680
To replace the SI200X680, order the SAI200X680. Verify the ISO 15552 mounting interface, 200 mm bore, 680 mm stroke, G3/4 port (PT/G/NPT), and M36x2 rod thread. This non-magnet SKU cannot accept a sensor. For sizing both ways: a 160 mm bore yields 10053 N push at 0.5 MPa, while a 200 mm bore hits 21991 N at 0.7 MPa. Because the 680 mm stroke exceeds 300 mm, use external guides to prevent rod bending and side-load damage. The cushion only decelerates; for load holding on air loss, specify an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X680
- ✓ 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 SI200X680 FAQ
Yes, the SI200X680 is discontinued. The direct replacement is the SAI200X680. It shares the same ISO 15552 mounting interface, 200 mm bore, 680 mm stroke, output force, G3/4 port and mounting accessories, fitting existing fixtures perfectly.
The 200 mm bore features a G3/4 port and M36x2 rod thread. Force ratings 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 maximum theoretical force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X680
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X680 replacement — usually within 7-8 hours.