This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1660, 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 SI80X1660
The AirTAC SI80 Standard Air Cylinder SI80X1660 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1660mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1660, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1660 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1660
- 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 SI80X1660
The AirTAC SI80X1660 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 1660mm stroke. Because 1660mm exceeds the 1500mm standard maximum, this is a non-standard, made-to-order length. It delivers 2513N push force at 0.5MPa through a G3/8 port. The direct replacement is the SAI80X1660, retaining identical ISO 15552 mounting dimensions, output force, and accessories.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. For high heat, Viton H seals raise the temperature limit to 150C.
Airtac SI80 Standard Air Cylinder SI80X1660 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1660 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1660 |
| Bore size | Ø80 mm |
| Stroke | 1660 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 SAI80X1660 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 SAI80X1660 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 SI80X1660
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1660 | 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 SI80X1660 Is Used
Long-Stroke Material Transfer
Pushes heavy pallets or workpieces across extended conveyor gaps using the 2513N push force at 0.5MPa, requiring external guides to manage the 1660mm stroke.
Large Door Actuation
Opens and closes heavy industrial machine doors or safety gates, utilizing the 80mm bore's 513kgf maximum theoretical force at 1.0MPa for reliable momentum.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1660 with the SAI80X1660
To replace the SI80X1660, order the SAI80X1660. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the G3/8 port, and the M20x1.5 rod thread. This 1660mm length is non-standard (exceeding the 1500mm max) and requires a side-load / rod-bending check; use external guides to prevent piston damage over this long stroke. If sizing alternatives, the 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N. This SKU has no magnet and cannot take a sensor. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1660
- ✓ 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 SI80X1660 FAQ
Yes, the SI80X1660 is discontinued. The direct replacement is the SAI80X1660. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 1660mm stroke, 4523N force, G3/8 port, and mounting interface. The SAI simply upgrades the piston seal to two Y-shaped elements for lower start-up pressure.
The 80mm bore uses a G3/8 port and features a 25mm rod. Force output is 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a maximum theoretical force of 513kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X1660
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1660 replacement — usually within 7-8 hours.