This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X65, 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 SI80X65
The AirTAC SI80 Standard Air Cylinder SI80X65 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 65mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X65, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke65 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X65
- 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 SI80X65
The AirTAC SI80X65 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 65 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 SAI80X65, matching the bore, stroke, output force, and mounting interface for existing fixtures.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B or DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X65 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X65 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X65 |
| Bore size | Ø80 mm |
| Stroke | 65 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 SAI80X65 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 SAI80X65 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 SI80X65
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×65 | 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 SI80X65 Is Used
Mid-Tonnage Pressing
Applies 2513 N of push force at 0.5 MPa for seating bearings, stamping light sheet metal, or clinching components in automated fixtures.
Pallet Diversion
Uses the 65 mm stroke to push heavy pallets onto adjacent conveyor lines, relying on the ISO 15552 profile barrel for rigid mounting.
Replacing the Airtac SI80 Standard Air Cylinder SI80X65 with the SAI80X65
To replace the SI80X65, order the SAI80X65. Verify the ISO 15552 mounting interface, 80 mm bore, 65 mm stroke, G3/8 port (PT/G/NPT), and mounting accessory. This non-magnet SKU cannot take a sensor; order an -S suffix if sensing is needed. For sizing, a 63 mm bore gives 1559 N push at 0.5 MPa, while a 100 mm bore gives 3927 N. The cushion only decelerates; it does not hold load on air loss. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X65
- ✓ 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 SI80X65 FAQ
Yes, the SI80X65 is discontinued. The direct replacement is the SAI80X65. It is dimensionally interchangeable per ISO 15552, keeping the same 80 mm bore, 65 mm stroke, 2513 N force, G3/8 port, and mounting interface.
The SI80X65 has a G3/8 air port. Force 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 maximum theoretical force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X65
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X65 replacement — usually within 7-8 hours.