This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X720S, 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 SI200X720S
The AirTAC Airtac SI200 Standard Cylinder SI200X720S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 720mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X720S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke720 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X720S
- 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 SI200X720S
The AirTAC SI200X720S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 15708 N push force at 0.5 MPa through a 200 mm bore and 720 mm stroke, it is replaced directly by the SAI200X720S. This direct upgrade keeps the same G3/4 port, M36x2 rod thread, and 50 mm cushions.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. The SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI200 Standard Cylinder SI200X720S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X720S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X720S |
| Bore size | Ø200 mm |
| Stroke | 720 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 SAI200X720S 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 SAI200X720S 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 SI200X720S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×720 | 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 SI200X720S Is Used
Heavy Press Systems
Drives large stamping and forming presses requiring 15708 N of thrust at 0.5 MPa over a 720 mm deep draw distance.
Large Mold Handling
Positions and extracts heavy injection molds on production lines, utilizing the 50 mm adjustable cushions to stop 3204 kgf impacts.
Replacing the Airtac SI200 Standard Cylinder SI200X720S with the SAI200X720S
To replace the SI200X720S, order the SAI200X720S. Verify the ISO 15552 mounting interface, 720 mm stroke, G3/4 port, and the -S magnet for CS1-B/DS1-B sensors. If you need more force, the only larger standard profile bore is 200 mm itself (already maxed), so you must explore twin cylinders or custom multipliers. If less force is acceptable, step down to a 160 mm bore (10053 N push at 0.5 MPa). For the 720 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X720S
- ✓ 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 SI200X720S FAQ
Yes, the AirTAC SI200X720S is discontinued. The direct replacement is the SAI200X720S. It is dimensionally interchangeable per ISO 15552, maintaining the same 200 mm bore, 720 mm stroke, output force, G3/4 port, and mounting accessories.
This double-acting cylinder operates at 30-500 mm/s. It generates 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical maximum force of 3204 kgf at 1.0 MPa. The G3/4 port and 50 mm cushions manage these high loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X720S
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