This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X45, 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 SI80X45
The AirTAC SI80 Standard Air Cylinder SI80X45 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 45mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X45, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke45 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X45
- 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 SI80X45
The AirTAC SI80X45 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 45mm stroke, delivering 2513N push force at 0.5MPa via a G3/8 port. Because this exact SKU lacks the -S magnet suffix, it cannot accept a position sensor. AirTAC ended the SI line, replacing it with the SAI80X45.
The SAI80X45 is a direct upgrade retaining the same ISO 15552 mounting interface, M20x1.5 rod thread, and 36mm cushions. It features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure.
Airtac SI80 Standard Air Cylinder SI80X45 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X45 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X45 |
| Bore size | Ø80 mm |
| Stroke | 45 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 SAI80X45 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 SAI80X45 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 SI80X45
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×45 | 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 SI80X45 Is Used
Mid-Tonnage Pressing
Ideal for applying steady 2513N clamping forces on machining fixtures or press-fitting small bearings with its short 45mm stroke.
Heavy Diverting
Provides robust actuation to pivot or stop heavier product flows on packaging lines, utilizing the 80mm bore's substantial push force.
Pallet Stops
Acts as a high-strength end-stop for loaded pallets on roller conveyors, safely halting up to roughly 128kg vertical loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80X45 with the SAI80X45
To replace the discontinued SI80X45, order the SAI80X45, matching the 80mm bore, 45mm stroke, G3/8 port, and your existing ISO 15552 mounting accessories. Since this SKU has no -S magnet, it cannot support sensing; if you need switches, specify a magnet and use current AirTAC sensors. A plain cylinder drifts on air loss because the cushion only decelerates, so use an external rod lock or pilot check valve for holding, or explore the SAIL or BSAI lock variants. If sizing alternatives, a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore provides 3927N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X45
- ✓ 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 SI80X45 FAQ
Yes, the AirTAC SI80X45 is discontinued. The direct replacement is the SAI80X45. It is a true ISO 15552 profile cylinder that matches the 80mm bore, 45mm stroke, port size, and mounting interface, dropping directly into existing fixtures.
The 80mm bore uses a G3/8 air port. At 0.5MPa it provides 2513N push and 2268N pull force. At 0.7MPa push is 3518N, and at 0.9MPa it is 4523N. The theoretical maximum force is 513kgf at 1.0MPa.
Request a Quote for the SAI80X45
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X45 replacement — usually within 7-8 hours.