This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX150, 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 SI80AX150
The AirTAC SI80 Standard Air Cylinder SI80AX150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX150
- 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 SI80AX150
The AirTAC SI80AX150 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 150mm stroke. It delivers 2513N push force at 0.5MPa through a G3/8 port. The direct replacement is the SAI80AX150, which shares identical mounting, force, and porting. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This SI80AX150 variant uses a SUS420J2 stainless steel rod, but lacks a magnet, so it cannot accept position switches.
Note that a standard cylinder drifts without live air; the cushions only decelerate the stroke end. For load holding, explore the SAIL or BSAI lock variants, or use an external pilot check valve.
Airtac SI80 Standard Air Cylinder SI80AX150 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX150 |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAI80AX150 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 SAI80AX150 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 SI80AX150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SI80AX150 Is Used
Mid-Tonnage Pressing
Ideal for applying steady clamping or pressing force up to 2513N at 0.5MPa in automated machining or assembly fixtures.
Heavy Package Diversion
Provides robust actuation for diverting heavier loads or pallets on a production line, utilizing the 150mm stroke to clear the belt path.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX150 with the SAI80AX150
To replace the SI80AX150, order the SAI80AX150. Confirm the ISO 15552 mounting interface, the 80mm bore, 150mm stroke, G3/8 port, and SUS420J2 rod. Because this SKU lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. Sizing downward, a 63mm bore yields 1559N push at 0.5MPa; sizing upward, a 100mm bore gives 3927N. If you need built-in locking, the SAI family offers the SAIL air-released lock and BSAI clamp-lock variants that the legacy SI lacked. Remember, a plain cylinder does not hold load without air pressure.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX150
- ✓ 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 SI80AX150 FAQ
Yes, the AirTAC SI80AX150 is discontinued. The direct replacement is the SAI80AX150. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 150mm stroke, G3/8 port, and mounting interface.
This double-acting cylinder features a G3/8 air port and a 25mm piston rod. It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and 4523N push at 0.9MPa. The theoretical maximum force is 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX150
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX150 replacement — usually within 7-8 hours.