This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X120H, 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 SI200X120H
The AirTAC SI200 Standard Cylinder SI200X120H 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 SAI200X120H, 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 → SAI200X120H
- 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 SI200X120H
The AirTAC SI200X120H is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 120mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N push force at 0.5 MPa and features a G3/4 port. This specific SKU includes a Viton H seal for high-temperature environments up to 150 C, but because it lacks the -S magnet, it cannot accept position sensors.
AirTAC replaced the SI line with the SAI200X120H, a direct replacement matching the ISO 15552 mounting interface, bore, stroke, force, and port. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life.
Airtac SI200 Standard Cylinder SI200X120H Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X120H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X120H |
| 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 SAI200X120H 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 SAI200X120H 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 SI200X120H
| 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 SI200X120H Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring substantial thrust, delivering 28274 N at 0.9 MPa for robust industrial metalworking.
High-Temperature Molding
Operates reliably in heated environments up to 150 C using the Viton H seal, making it suitable for actuating heavy mold platforms.
Replacing the Airtac SI200 Standard Cylinder SI200X120H with the SAI200X120H
To replace the discontinued SI200X120H, order the SAI200X120H and verify your ISO 15552 mounting interface, M36x2 rod thread, and G3/4 port. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, select an SAI model with the S suffix. The 120mm stroke is well under the 1500mm maximum, so side-load rod-bending risks are minimal. If stepping down, a 160mm bore offers 10053 N at 0.5 MPa; if sizing up, the 200mm bore provides 21991 N at 0.7 MPa. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X120H
- ✓ 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 SI200X120H FAQ
Yes, the AirTAC SI200X120H is discontinued. The direct replacement is the SAI200X120H. It shares the identical ISO 15552 mounting interface, 200mm bore, 120mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
This double-acting cylinder features a G3/4 air port and delivers a push force of 15708 N and pull force of 15080 N at 0.5 MPa. At 0.7 MPa it pushes 21991 N, and 28274 N at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X120H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X120H replacement — usually within 7-8 hours.