This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X180TC, 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 SI80X180TC
The AirTAC SI80 Standard Air Cylinder SI80X180TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X180TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X180TC
- 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 SI80X180TC
The AirTAC SI80X180TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore, 180 mm stroke, and TC trunnion mount. Delivering 2513 N push force at 0.5 MPa, it features a 25 mm rod, M20x1.5 thread, G3/8 port, and 36 mm cushions. This SKU lacks a magnet, so it cannot accept a position switch.
Order the direct replacement SAI80X180TC instead. It shares the exact ISO 15552 mounting interface, force, and port size, but adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure.
Airtac SI80 Standard Air Cylinder SI80X180TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X180TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X180TC |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAI80X180TC 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 SAI80X180TC 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 SI80X180TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SI80X180TC Is Used
Pallet Diversion
Actuates heavy lane diverters on packaging lines, utilizing the 2513 N thrust to push loaded pallets smoothly onto auxiliary tracks.
Vertical Lift Gate
Raises and lowers 100 kg access gates via the TC trunnion mount, operating well within the 128 kg vertical lift capacity at 0.5 MPa.
Press Ejection
Ejects formed metal components from hydraulic presses, relying on the 36 mm adjustable air cushions to decelerate the rod at high speeds.
Replacing the Airtac SI80 Standard Air Cylinder SI80X180TC with the SAI80X180TC
To replace the SI80X180TC, order the SAI80X180TC. Confirm the TC trunnion mount, 80 mm bore, 180 mm stroke, G3/8 port, and M20x1.5 rod thread. Because this specific SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI variant if sensing is required. For sizing alternatives, 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 pilot check valve or explore the SAIL lock or BSAI clamp-lock variants. The 180 mm stroke is under the 300 mm side-load threshold, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X180TC
- ✓ 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 SI80X180TC FAQ
Yes, the SI80X180TC is discontinued. The direct replacement is the SAI80X180TC. It is dimensionally interchangeable per ISO 15552, retaining the same TC mount, 80 mm bore, 180 mm stroke, 2513 N force, and G3/8 port.
It features a G3/8 air port. The thrust ratings are: 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 maximum of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X180TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X180TC replacement — usually within 7-8 hours.