This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X620, 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 SI200X620
The AirTAC Airtac SI200 Standard Cylinder SI200X620 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 620mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X620, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke620 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X620
- 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 SI200X620
The AirTAC SI200X620 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 620mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200X620, matching the exact interface, stroke, force, and mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It adds SAIL and BSAI lock variants the SI lacked. This no-magnet SKU cannot take a sensor.
Airtac SI200 Standard Cylinder SI200X620 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X620 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X620 |
| Bore size | Ø200 mm |
| Stroke | 620 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 SAI200X620 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 SAI200X620 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 SI200X620
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×620 | 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 SI200X620 Is Used
Heavy Press Operations
Drives large industrial presses requiring 15708 N of push force at 0.5 MPa, utilizing the 620mm stroke for deep forming cycles.
Oversized Material Routing
Shifts heavy pallets or structural components along production lines, relying on adjustable 50mm cushions to decelerate at stroke ends.
Replacing the Airtac SI200 Standard Cylinder SI200X620 with the SAI200X620
To replace the SI200X620, order the SAI200X620. Confirm the ISO 15552 mounting interface, 200mm bore, 620mm stroke, G3/4 port, and M36x2 thread. The SAI drops into existing fixtures. Size both ways: neighbor bores offer different forces, while this bore yields 21991 N at 0.7 MPa. For load holding, a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 620mm stroke requires external guides to prevent rod bending and side loads. Without a -S magnet, this SKU cannot use CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X620
- ✓ 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 SI200X620 FAQ
Yes, the SI200X620 is discontinued. The direct replacement is the SAI200X620. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 620mm stroke, G3/4 port, and mounting interface.
It features a G3/4 port. The force 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 max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X620
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X620 replacement — usually within 7-8 hours.