This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X80TC, 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 SI80X80TC
The AirTAC SI80 Standard Air Cylinder SI80X80TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X80TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X80TC
- 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 SI80X80TC
The AirTAC SI80X80TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 80 mm stroke, delivering 2513 N of push force at 0.5 MPa. It features a Ø25 mm piston rod, M20x1.5 rod thread, and a G3/8 air port. Because this legacy SI unit is end-of-life, you should order the direct replacement: the SAI80X80TC. It shares the identical ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting your existing TC trunnion fixtures perfectly.
The SAI upgrade introduces a refined piston seal utilizing two Y-shaped one-way elements for extended longevity and lower start-up pressure. As this specific SKU lacks the -S magnet, it cannot accept a position sensor; if switch tracking is needed, order an SAI equivalent with the magnet option. The SAI family also adds SAIL, SAIF, and BSAI lock-valve variants absent from the legacy SI line.
Airtac SI80 Standard Air Cylinder SI80X80TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X80TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X80TC |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80X80TC 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 SAI80X80TC 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 SI80X80TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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 SI80 Standard Air Cylinder SI80X80TC Is Used
Workpiece Clamping
Secures heavy metal castings during machining operations using 2513 N of thrust at 0.5 MPa, ensuring rigid holding without deflection.
Package Diverting
Actuates diverter arms on high-speed sorting lines, utilizing the 80 mm stroke and 30-800 mm/s speed range for rapid cycling.
Replacing the Airtac SI80 Standard Air Cylinder SI80X80TC with the SAI80X80TC
To replace the discontinued SI80X80TC, order the SAI80X80TC, confirming the ISO 15552 TC trunnion mount, 80 mm stroke, and G3/8 port. Verify your thread standard (PT, G, or NPT) and rod material (carbon steel, SUS420J2, or SUS304). Since this is a no-magnet SKU, it cannot support legacy CS1-B/DS1-B sensors; specify an SAI with a magnet if position feedback is required. Sizing both ways: the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore offers 3927 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. Operating speed is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X80TC
- ✓ 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 SI80X80TC FAQ
Yes, the SI80X80TC is discontinued. The direct replacement is the SAI80X80TC. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 80 mm stroke, 2513 N force, G3/8 port, and TC mounting interface.
The G3/8 port bore delivers a push force of 2513 N and a pull force of 2268 N at 0.5 MPa. At 0.7 MPa it pushes 3518 N, and 4523 N at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X80TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X80TC replacement — usually within 7-8 hours.