This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X640, 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 SI200X640
The AirTAC SI200 Standard Cylinder SI200X640 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 640mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X640, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke640 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X640
- 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 SI200X640
The AirTAC SI200X640 is a discontinued double-acting ISO 15552 profile cylinder. Generating 15708 N push at 0.5 MPa, it features a 200mm bore, 640mm stroke, G3/4 port, and M36x2 rod thread. AirTAC replaced this legacy unit with the SAI200X640, a direct upgrade retaining the exact ISO 15552 mounting interface, force, and dimensions.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. Note this non-magnet SKU cannot accept a sensor; legacy CS1-B/DS1-B switches only fit the -S variant. For high heat, Viton H seals raise the operating range to 150 C.
Airtac SI200 Standard Cylinder SI200X640 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X640 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X640 |
| Bore size | Ø200 mm |
| Stroke | 640 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 SAI200X640 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 SAI200X640 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 SI200X640
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×640 | 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 SI200X640 Is Used
Heavy Stamping Press
Drives large platens and heavy dies requiring up to 15708 N of thrust at 0.5 MPa, utilizing the 640mm stroke for deep draw operations.
Large Mold Actuation
Opens and closes heavy industrial molds on injection machinery, relying on the 50mm adjustable air cushions to decelerate the massive moving mass.
Replacing the Airtac SI200 Standard Cylinder SI200X640 with the SAI200X640
To replace the SI200X640, order the SAI200X640. Confirm the ISO 15552 mounting interface, 640mm stroke, G3/4 port, and your mounting accessory (LB, FA, TC, etc.). This non-magnet model cannot take a sensor; order the SAI200X640S if position detection is needed. Sizing both ways: the 160mm bore neighbor offers 10053 N push at 0.5 MPa, while this 200mm bore hits 15708 N. A plain cylinder drifts on air loss—the 50mm cushion only decelerates near stroke end. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. With a 640mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X640
- ✓ 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 SI200X640 FAQ
Yes, the SI200X640 is discontinued. The direct replacement is the AirTAC SAI200X640. It shares the same ISO 15552 mounting interface, 200mm bore, 640mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
The 200mm bore delivers 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 SAI200X640
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X640 replacement — usually within 7-8 hours.