This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X200STC, 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 SI80 Standard Air Cylinder SI80X200STC
The AirTAC SI80 Standard Air Cylinder SI80X200STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X200STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X200STC
- 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 SI80 Standard Air Cylinder SI80X200STC
The AirTAC SI80X200STC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 200 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80X200STC, matching the bore, stroke, force, port and ISO 15552 mounting interface for a seamless fixture swap.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, and the SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X200STC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X200STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X200STC |
| Bore size | Ø80 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI80X200STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80X200STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI80 Standard Air Cylinder SI80X200STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×200 | 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 SI80 Standard Air Cylinder SI80X200STC Is Used
Press Clamping
Secures heavy steel workpieces in machining fixtures, utilizing the 2513 N push force at 0.5 MPa to prevent shifting during milling operations.
Product Diverting
Actuates heavy-duty diverter arms on high-speed material handling lines, relying on the 30-800 mm/s speed range and TC trunnion mount for pivot motion.
Replacing the Airtac SI80 Standard Air Cylinder SI80X200STC with the SAI80X200STC
To replace the SI80X200STC, order the SAI80X200STC. Confirm the ISO 15552 TC trunnion mounting, 80 mm bore, 200 mm stroke, G3/8 port (PT/G/NPT thread options) and the -S magnet for current AirTAC switches. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 200 mm stroke, rod bending is low, but for any stroke >=300 mm guide rails to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X200STC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI80 Standard Air Cylinder SI80X200STC FAQ
Yes, the SI80X200STC is discontinued. The direct replacement is the SAI80X200STC. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 200 mm stroke, G3/8 port, TC trunnion mount and output force, so it fits existing fixtures perfectly.
This double-acting cylinder uses a G3/8 port. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical max force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X200STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X200STC replacement — usually within 7-8 hours.