This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X577SFB, 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 SI200X577SFB
The AirTAC Airtac SI200 Standard Cylinder SI200X577SFB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 577mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X577SFB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke577 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X577SFB
- 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 SI200X577SFB
The AirTAC SI200X577SFB is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 577mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X577SFB, a direct alternative retaining the exact ISO 15552 mounting interface, M36x2 thread, and 50mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. The SAI family also adds BSAI clamp-lock variants the SI lacked. Your -S suffix means a piston magnet for CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200X577SFB Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X577SFB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X577SFB |
| Bore size | Ø200 mm |
| Stroke | 577 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 SAI200X577SFB 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 SAI200X577SFB 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 SI200X577SFB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×577 | 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 SI200X577SFB Is Used
Heavy Press Systems
Drives large stamping and forming presses requiring 15708 N push at 0.5 MPa, utilizing the FB flange to withstand massive reaction forces.
Automated Assembly Jigs
Actuates heavy industrial jigs where the G3/4 port and 50mm adjustable cushions absorb high kinetic energy at stroke ends.
Replacing the Airtac SI200 Standard Cylinder SI200X577SFB with the SAI200X577SFB
To replace the SI200X577SFB, order the SAI200X577SFB. Confirm the ISO 15552 interface, 200mm bore, 577mm stroke, G3/4 port, and FB flange mounting. The -S magnet enables CS1-B/DS1-B switches (the SAI uses current AirTAC switches). Sizing both ways: a 160mm bore yields 10053 N push at 0.5 MPa, while a 200mm bore hits 21991 N at 0.7 MPa. A plain cylinder drifts without air; for load holding use an external rod lock or pilot check valve, or the SAIL/BSAI lock variant. At 577mm, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X577SFB
- ✓ 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 SI200X577SFB FAQ
Yes, the SI200X577SFB is discontinued. The direct replacement is the SAI200X577SFB. It shares the same ISO 15552 mounting interface, 200mm bore, 577mm stroke, force, G3/4 port, and FB flange, fitting existing fixtures perfectly.
The 200mm bore provides 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 SAI200X577SFB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X577SFB replacement — usually within 7-8 hours.