This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X80SN, 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 SI200X80SN
The AirTAC Airtac SI200 Standard Cylinder SI200X80SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 80mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X80SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke80 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X80SN
- 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 SI200X80SN
The AirTAC SI200X80SN is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke and a 200 mm bore, delivering 15708 N of push force at 0.5 MPa. It featured a 40 mm carbon steel rod, a G3/4 air port, and an NBR seal rated for -20 to +70 C. Because this SI unit is end-of-life, you should order the SAI200X80SN direct replacement, which matches the exact mounting interface, bore, and output force.
The SAI200X80SN upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The original SI-SKU included a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches and adds SAIL lock and BSAI clamp-lock variants the SI lacked.
Airtac SI200 Standard Cylinder SI200X80SN Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X80SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X80SN |
| Bore size | Ø200 mm |
| Stroke | 80 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 SAI200X80SN 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 SAI200X80SN 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 SI200X80SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×80 | 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 SI200X80SN Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring up to 21991 N of push force at 0.7 MPa, utilizing the 200 mm bore for massive impact energy.
Large Mold Handling
Shifts substantial injection molds or tooling bases within a plant, relying on the 40 mm rod and ISO 15552 profile to handle high structural loads.
Replacing the Airtac SI200 Standard Cylinder SI200X80SN with the SAI200X80SN
To replace the discontinued SI200X80SN, order the SAI200X80SN. Verify your ISO 15552 mounting fixtures, the G3/4 port, the M36x2 rod thread, and the NBR seal. The -S magnet and -N seal transfer directly, though you will need current AirTAC switches instead of the legacy CS1-B/DS1-B set. If you need more force than the 15708 N at 0.5 MPa, step up to a higher pressure (up to 1.0 MPa max for 3204 kgf) as the 200 mm bore is the largest standard size. If you need less force, a 160 mm bore offers 10053 N at 0.5 MPa. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. Since the 80 mm stroke is under 300 mm, side-load rod-bending risks are minimal, but standard guide precautions apply.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X80SN
- ✓ 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 SI200X80SN FAQ
Yes, the SI200X80SN is discontinued. The direct replacement is the SAI200X80SN. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 80 mm stroke, force, G3/4 port, and mounting accessories.
At 0.5 MPa, the push force is 15708 N and the pull force is 15080 N. At 0.7 MPa it pushes 21991 N, and at 0.9 MPa it pushes 28274 N. The theoretical maximum force is 3204 kgf at 1.0 MPa. The operating speed range is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X80SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X80SN replacement — usually within 7-8 hours.