This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X240S, 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 SI200X240S
The AirTAC SI200 Standard Cylinder SI200X240S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 240mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X240S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke240 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X240S
- 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 SI200X240S
The AirTAC SI200X240S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 240 mm stroke. It delivers 15708 N push and 15080 N pull at 0.5 MPa, operating at 30-500 mm/s through a G3/4 port. Because this SI unit is end-of-life, you should order the SAI200X240S direct replacement. It matches the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI200 Standard Cylinder SI200X240S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X240S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X240S |
| Bore size | Ø200 mm |
| Stroke | 240 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 SAI200X240S 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 SAI200X240S 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 SI200X240S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×240 | 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 SI200X240S Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 21991 N of push force at 0.7 MPa, utilizing the 50 mm adjustable cushions to absorb heavy impact.
Large Mold Handling
Actuates heavy industrial molds and clamps on production lines, relying on the 40 mm piston rod and M36x2 threading for robust mechanical coupling.
Replacing the Airtac SI200 Standard Cylinder SI200X240S with the SAI200X240S
To replace the SI200X240S, order the SAI200X240S. Confirm the ISO 15552 mounting interface, 200 mm bore, 240 mm stroke, G3/4 port (PT/G/NPT thread options), and mounting accessory. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches; a no-S SKU cannot take a sensor. Sizing both ways: stepping down to a 160 mm bore yields 10053 N push at 0.5 MPa, while stepping up is unnecessary as this 200 mm bore already provides 21991 N at 0.7 MPa and a 3204 kgf max at 1.0 MPa. For stroke lengths of 240 mm, guide external rods to prevent side-load bending. A plain cylinder drifts on air loss as the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant to hold loads. Rod materials include carbon steel, SUS420J2 (A), or SUS304 (B), with Viton H seals for high heat.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X240S
- ✓ 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 SI200X240S FAQ
Yes, the AirTAC SI200X240S is discontinued. The direct replacement is the SAI200X240S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 200 mm bore, 240 mm stroke, G3/4 port, and output force to fit existing fixtures directly.
The 200 mm bore uses a G3/4 port. It generates 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 force of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X240S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X240S replacement — usually within 7-8 hours.