This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX120, 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 SI200AX120
The AirTAC SI200 Standard Cylinder SI200AX120 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 SAI200AX120, 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 → SAI200AX120
- 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 SI200AX120
The AirTAC SI200AX120 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 120 mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200AX120, sharing the exact interface, force, and mounting. This SKU uses an SUS420J2 stainless steel rod for corrosion resistance but lacks a magnet, so it cannot accept position switches.
Upgrading to the SAI200AX120 introduces a two Y-shaped one-way piston seal for low start-up pressure. For load holding, note that cushions only decelerate; explore SAIL or BSAI lock variants.
Airtac SI200 Standard Cylinder SI200AX120 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX120 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX120 |
| 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 SAI200AX120 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 SAI200AX120 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 SI200AX120
| 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 SI200AX120 Is Used
Heavy Press Forming
Generates 21991 N at 0.7 MPa to form thick metal components securely in automated stamping lines.
Injection Mold Clamping
Holds large industrial molds closed with high thrust, utilizing the SUS420J2 rod in humid environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX120 with the SAI200AX120
To replace the SI200AX120, order the SAI200AX120. Verify the ISO 15552 mounting interface, 120 mm stroke, G3/4 port, and SUS420J2 rod. Because this SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors. At 0.5 MPa it pushes 15708 N; if you need less force, step down to a 160 mm bore (10053 N), or up to the 200 mm max if higher force is required. For suspended loads, add an external pilot check valve or use the SAIL/BSAI lock variants, as standard cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX120
- ✓ 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 SI200AX120 FAQ
Yes, the SI200AX120 is discontinued. The direct replacement is the SAI200AX120, which matches the ISO 15552 mounting interface, 200 mm bore, 120 mm stroke, force, and G3/4 port.
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 at 0.9 MPa, and a max force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX120
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX120 replacement — usually within 7-8 hours.