This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX650S, 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 SI200AX650S
The AirTAC SI200 Standard Cylinder SI200AX650S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 650mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX650S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX650S
- 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 SI200AX650S
The AirTAC SI200AX650S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore, 650mm stroke, and a SUS420J2 stainless steel rod. It delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200AX650S, sharing the exact ISO 15552 mounting interface, G3/4 port, and output force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The original -S magnet supports CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI200 Standard Cylinder SI200AX650S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX650S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX650S |
| Bore size | Ø200 mm |
| Stroke | 650 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 SAI200AX650S 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 SAI200AX650S 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 SI200AX650S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×650 | 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 SI200AX650S Is Used
Heavy Press Forming
Generates 21991 N at 0.7 MPa to form thick steel plates in automated stamping lines.
Large Mold Handling
Shifts heavy injection molds along the 650mm travel, requiring external guides to prevent rod bending.
Replacing the Airtac SI200 Standard Cylinder SI200AX650S with the SAI200AX650S
To replace the SI200AX650S, order the SAI200AX650S. Confirm the ISO 15552 mounting fixture, 650mm stroke, G3/4 port, and the -A SUS420J2 rod option. The 650mm stroke requires external guides to prevent rod bending under side loads. If sizing down, a 160mm bore yields 10053 N at 0.5 MPa; if sizing up, you exceed the 200mm class. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve, or specify the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX650S
- ✓ 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 SI200AX650S FAQ
Yes, the SI200AX650S is discontinued. The direct replacement is the SAI200AX650S, which matches the ISO 15552 mounting interface, 200mm bore, 650mm stroke, force, and G3/4 port.
At 0.5 MPa it pushes 15708 N and pulls 15080 N. It pushes 21991 N at 0.7 MPa, 28274 N at 0.9 MPa, and has 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 SAI200AX650S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX650S replacement — usually within 7-8 hours.