This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X120S, 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 SI200X120S
The AirTAC SI200 Standard Cylinder SI200X120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X120S
- 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 SI200X120S
The AirTAC SI200X120S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 15708 N push force at 0.5 MPa through a 200 mm bore and 120 mm stroke, it is replaced by the SAI200X120S. This upgrade is a direct, retaining the G3/4 port, M36x2 rod thread and ISO 15552 mounting interface.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. The SAI family adds SAIL lock, SAIF valve and BSAI clamp variants the SI lacked.
Airtac SI200 Standard Cylinder SI200X120S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X120S |
| Bore size | Ø200 mm |
| Stroke | 120 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 SAI200X120S 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 SAI200X120S 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 SI200X120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×120 | 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 SI200X120S Is Used
Heavy Press Forming
Drives large stamping dies with 21991 N output at 0.7 MPa, utilizing the 50 mm adjustable cushion to absorb kinetic energy.
Mold Clamping Rigs
Holds heavy injection molds in place during setup, matching the G3/4 air supply to high-flow demand.
Replacing the Airtac SI200 Standard Cylinder SI200X120S with the SAI200X120S
To replace the SI200X120S, order the SAI200X120S. Verify the ISO 15552 mounting interface, 120 mm stroke, G3/4 port (PT/G/NPT) and the -S magnet for CS1-B/DS1-B sensors. If you need more force, the 160 mm bore offers 10053 N at 0.5 MPa; if less, the 125 mm bore provides 6136 N. A plain cylinder drifts on air loss, so for load holding use the SAIL or BSAI lock variant, or an external pilot check valve. For 120 mm strokes, guide external rods to prevent side-load bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X120S
- ✓ 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 SI200X120S FAQ
Yes, the SI200X120S is discontinued. The direct replacement is the SAI200X120S. It retains the same ISO 15552 mounting interface, 200 mm bore, 120 mm stroke, force, and G3/4 port, fitting existing fixtures perfectly.
It has a G3/4 port. Force output is 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X120S replacement — usually within 7-8 hours.