This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX165, 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 SI80AX165
The AirTAC SI80 Standard Air Cylinder SI80AX165 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 165mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX165, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX165
- 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 SI80AX165
The AirTAC SI80AX165 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 165mm stroke. Delivering 2513 N push force at 0.5 MPa, it features a Ø25mm SUS420J2 stainless piston rod (the -A option) and a G3/8 air port. As this SKU lacks a -S magnet, it cannot accept a position switch. AirTAC replaced the SI line with the SAI family; order the SAI80AX165 as the direct replacement.
The SAI80AX165 maintains identical ISO 15552 mounting dimensions, output force, and port size, dropping straight into existing fixtures. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note that a standard cylinder drifts without live air; use an external rod lock or pilot check valve for load holding.
Airtac SI80 Standard Air Cylinder SI80AX165 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX165 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX165 |
| Bore size | Ø80 mm |
| Stroke | 165 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 SAI80AX165 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 SAI80AX165 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 SI80AX165
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×165 | 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 SI80AX165 Is Used
Stainless Rod Actuation
The SUS420J2 stainless rod excels in mildly corrosive environments, driving clamps and stops in washdown-adjacent machining cells.
Pallet Lift Stations
Generating 2513 N at 0.5 MPa, it lifts work platforms and pallet diverters, safely handling loads near its 128 kg vertical capacity.
Mid-Stroke Transfer
The 165mm stroke pushes heavy goods between parallel conveyor lines without requiring full bore extension, optimizing cycle times.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX165 with the SAI80AX165
To replace the discontinued SI80AX165, order the SAI80AX165. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the 165mm stroke, and the G3/8 port. Because this specific SKU has no -S magnet, it cannot support sensing; if you need position feedback, select an SAI80X165S and use current AirTAC switches. The -A rod denotes SUS420J2 stainless steel for corrosion resistance, unlike the default carbon steel. Sizing both ways: the 80mm bore yields 2513 N push at 0.5 MPa (4523 N at 0.9 MPa); if you need less force, a 63mm bore offers 1559 N, while a 100mm bore provides 3927 N. The 36mm adjustable air cushions only decelerate the piston near end-of-stroke and do not hold loads on air loss—for that, consider the SAIL or BSAI lock variants, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX165
- ✓ 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 SI80AX165 FAQ
Yes, the AirTAC SI80AX165 is discontinued. The direct replacement is the SAI80AX165. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 165mm stroke, G3/8 port, and mounting interface. You simply order the SAI80AX165.
The G3/8 port supplies a 2513 N push and 2268 N pull 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. It operates at 30-800 mm/s with a 36mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX165
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX165 replacement — usually within 7-8 hours.