This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X650, 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 SI200X650
The AirTAC Airtac SI200 Standard Cylinder SI200X650 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 SAI200X650, 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 → SAI200X650
- 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 SI200X650
The AirTAC SI200X650 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 650 mm stroke, delivering a push force of 15708 N at 0.5 MPa. It features a G3/4 port, an M36x2 rod thread, and 50 mm adjustable air cushions at both ends. As this legacy model is end-of-life, the direct replacement is the SAI200X650, which matches the exact ISO 15552 mounting interface, bore, stroke, force, and port size for seamless fixture integration.
The SAI upgrade introduces a refined piston seal utilizing two Y-shaped one-way elements for extended longevity and lower start-up pressure. For specific application needs, the SAI family adds SAIL air-released lock and BSAI clamp-lock variants absent in the original SI line. Note this specific SKU lacks a magnet (-S) and cannot accept position sensors.
Airtac SI200 Standard Cylinder SI200X650 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X650 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X650 |
| 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 SAI200X650 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 SAI200X650 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 SI200X650
| 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 SI200X650 Is Used
Heavy Stamping Press
Drives large platens in metal forming operations where the 21991 N push force at 0.7 MPa is required to shape thick steel plates.
Large Mold Ejection
Ejects massive injection molds from machinery, utilizing the 50 mm adjustable air cushions to safely decelerate the 40 mm rod at stroke ends.
Replacing the Airtac SI200 Standard Cylinder SI200X650 with the SAI200X650
To replace the discontinued SI200X650, order the SAI200X650 direct equivalent, verifying the ISO 15552 mounting interface, 200 mm bore, 650 mm stroke, and G3/4 port. Because this SKU lacks a magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, specify an SAI200X650S. Operating speed is 30-500 mm/s. Sizing both ways: if downsizing, a 160 mm bore yields 10053 N push at 0.5 MPa; if upsizing is impossible, 200 mm is the maximum standard profile. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for load holding consider the SAIL lock variant or an external pilot check valve. Finally, at 650 mm stroke, prevent rod bending by guiding the load externally to avoid side-load forces.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X650
- ✓ 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 SI200X650 FAQ
Yes, the SI200X650 is discontinued. The direct replacement is the AirTAC SAI200X650. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 650 mm stroke, output force, G3/4 port, and mounting accessories.
The bore is 200 mm with a G3/4 air port. The thrust ratings 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 theoretical maximum force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X650
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X650 replacement — usually within 7-8 hours.