This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X145N, 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 SI80X145N
The AirTAC SI80 Standard Air Cylinder SI80X145N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 145mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X145N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X145N
- 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 SI80X145N
The AirTAC SI80X145N is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 145 mm stroke. It delivers 2513 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80X145N, matching the interface, force, and mounting. This SKU uses NBR seals (-N) for -20 to +70 C and lacks a magnet, so it cannot accept a sensor.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X145N Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X145N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X145N |
| Bore size | Ø80 mm |
| Stroke | 145 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 SAI80X145N 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 SAI80X145N 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 SI80X145N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SI80X145N Is Used
Press Fit Tooling
Drives medium-tonnage press operations requiring 2513 N of push force at 0.5 MPa, utilizing the 145 mm stroke to seat bearings securely.
Replacing the Airtac SI80 Standard Air Cylinder SI80X145N with the SAI80X145N
To replace the SI80X145N, order the SAI80X145N. It drops into existing fixtures per the ISO 15552 mounting interface dimensions, keeping the 80 mm bore, 145 mm stroke, 2513 N output, and G3/8 port. Because this specific SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. When sizing, neighbouring bores offer different outputs: a 63 mm bore provides 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Note that a plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, specify the SAIL lock variant, BSAI clamp-lock, or an external pilot check valve. The 145 mm stroke is under 300 mm, so rod-bending side loads are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X145N
- ✓ 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 SI80X145N FAQ
Yes, the SI80X145N is discontinued. The direct replacement is the SAI80X145N. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 145 mm stroke, G3/8 port, and mounting interface.
This 80 mm bore cylinder features a G3/8 air port, a 25 mm rod, and M20x1.5 thread. Force output is 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 theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X145N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X145N replacement — usually within 7-8 hours.