This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X80STC, 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 SI100 Standard Cylinder SI100X80STC
The AirTAC Airtac SI100 Standard Cylinder SI100X80STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X80STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X80STC
- 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 SI100 Standard Cylinder SI100X80STC
The AirTAC SI100X80STC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke, delivering 3927 N push and 3681 N pull at 0.5 MPa. It features a G1/2 port, M20x1.5 rod thread, and a TC trunnion mount. AirTAC replaced this legacy unit with the SAI100X80STC, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, and output force.
The SAI100X80STC introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X80STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X80STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X80STC |
| Bore size | Ø100 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 SAI100X80STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X80STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X80STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SI100 Standard Cylinder SI100X80STC Is Used
Heavy-Duty Pressing
Drives large platens and stamping fixtures requiring substantial thrust, utilizing the 3927 N push force at 0.5 MPa to seat or form heavy components.
Pallet Diversion
Actuates heavy-duty TC trunnion-mounted diverter arms on conveyor lines, handling high lateral loads with its robust 25 mm piston rod.
Replacing the Airtac SI100 Standard Cylinder SI100X80STC with the SAI100X80STC
To replace the SI100X80STC, order the SAI100X80STC. Confirm the TC trunnion mounting interface, 100 mm bore, 80 mm stroke, G1/2 port (PT/G/NPT thread options), and the -S magnet. If you need more force, the neighboring 125 mm bore yields 6136 N push at 0.5 MPa; if less is acceptable, the 80 mm bore provides 2513 N. Remember that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. The SAIF variant integrates a 4M valve if you need self-actuation.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X80STC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X80STC FAQ
Yes, the AirTAC SI100X80STC is discontinued. The direct replacement is the SAI100X80STC. It features the same ISO 15552 mounting interface, 100 mm bore, 80 mm stroke, G1/2 port, and output force, fitting directly into existing TC trunnion fixtures.
The bore is 100 mm with a G1/2 air port. At 0.5 MPa it provides 3927 N push and 3681 N pull. At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X80STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X80STC replacement — usually within 7-8 hours.