This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX40S, 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 SI200AX40S
The AirTAC Airtac SI200 Standard Cylinder SI200AX40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX40S
- 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 SI200AX40S
The AirTAC SI200AX40S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 40 mm stroke. Built for heavy-duty tasks, it delivers 15708 N of push force at 0.5 MPa through a G3/4 port. The direct successor is the SAI200AX40S, retaining the same interface, bore, stroke, force, port, and mounting. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This unit includes a SUS420J2 stainless steel rod (option A) for corrosion resistance and a piston magnet for legacy CS1-B/DS1-B sensors. Note that a standard cylinder drifts without live air; the cushion only decelerates. For held loads, explore the SAIL or BSAI lock variants.
Airtac SI200 Standard Cylinder SI200AX40S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX40S |
| Bore size | Ø200 mm |
| Stroke | 40 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 SAI200AX40S 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 SAI200AX40S 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 SI200AX40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×40 | 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 SI200AX40S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming dies requiring massive output force and a short, rapid stroke cycle.
Industrial Clamp Rig
Secures oversized fabricated steel components during welding or machining operations using high clamping pressure.
Massive Platen Press
Applies 15708 N of thrust at 0.5 MPa to compress dense industrial materials or actuate large tooling assemblies.
Replacing the Airtac SI200 Standard Cylinder SI200AX40S with the SAI200AX40S
To replace the SI200AX40S, order the SAI200AX40S. Confirm the ISO 15552 mounting interface, 200 mm bore, 40 mm stroke, G3/4 port, and mounting accessory match your fixture. The SAI family introduces SAIL (air-released lock), SAIF (built-in 4M valve), and BSAI (clamp-lock) variants that the SI line lacked. If sizing down, a 160 mm bore yields 10053 N push at 0.5 MPa; if sizing up, this 200 mm bore reaches 21991 N at 0.7 MPa. A plain cylinder does not hold load without live air, so use an external rod lock or pilot check valve for vertical safety. The SAI uses current AirTAC switches, whereas this legacy -S SKU used CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX40S
- ✓ 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 SI200AX40S FAQ
Yes, the AirTAC SI200AX40S is discontinued. The direct replacement is the SAI200AX40S. It is dimensionally interchangeable per ISO 15552, keeping the same 200 mm bore, 40 mm stroke, output force, G3/4 port, and mounting interface.
This double-acting cylinder features a G3/4 air port and an M36x2 rod thread. Theoretical forces 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 force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX40S
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