This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX145, 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 SI80BX145
The AirTAC SI80 Standard Air Cylinder SI80BX145 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 SAI80BX145, 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 → SAI80BX145
- 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 SI80BX145
The AirTAC SI80BX145 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 145mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80BX145, matching the interface, force, and mounting.
This SAI upgrade features a new piston seal (two Y-shaped elements for low start-up pressure) and adds SAIL/BSAI lock variants the SI lacked. The -B rod is SUS304 stainless. With no -S suffix, this SKU lacks a magnet and cannot take a sensor.
Airtac SI80 Standard Air Cylinder SI80BX145 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX145 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX145 |
| 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 SAI80BX145 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 SAI80BX145 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 SI80BX145
| 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 SI80BX145 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
Drives heavy-duty pop-up gates and lane diverters on packaging lines, utilizing the 145 mm stroke to clear wide product loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX145 with the SAI80BX145
To replace the SI80BX145, order the SAI80BX145. Verify the ISO 15552 mounting interface, 145mm stroke, G3/8 port, and SUS304 rod. Because this SKU has no -S magnet, it cannot accept CS1-B/DS1-B sensors; add the S suffix if sensing is needed. The 80mm bore yields 2513 N push at 0.5 MPa; dropping to a 63mm bore gives 1559 N, while an 80mm bore at 0.7 MPa yields 3518 N. For load holding on air loss, note the cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variant. At 145mm stroke, rod bending is minimal, but always guide side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX145
- ✓ 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 SI80BX145 FAQ
Yes, the SI80BX145 is discontinued. The direct replacement is the SAI80BX145. It shares the exact ISO 15552 mounting interface, 80mm bore, 145mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly.
It features 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 theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX145
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX145 replacement — usually within 7-8 hours.