This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X145, 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 SI80X145
The AirTAC SI80 Standard Air Cylinder SI80X145 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 SAI80X145, 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 → SAI80X145
- 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 SI80X145
The AirTAC SI80X145 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. Because this legacy unit is end-of-life, the direct replacement is the SAI80X145, matching the exact ISO 15552 mounting interface, bore, stroke, output force and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For applications needing load holding, the SAI family adds SAIL and BSAI lock variants the SI lacked. This specific SKU lacks a magnet, so it cannot accept a CS1-B or DS1-B sensor.
Airtac SI80 Standard Air Cylinder SI80X145 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X145 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X145 |
| 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 SAI80X145 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 SAI80X145 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 SI80X145
| 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 SI80X145 Is Used
Press Fit Assembly
Drives medium-force press operations for seating bearings, delivering 2513 N of push force at 0.5 MPa to secure components reliably in automated machining cells.
Pallet Diversion
Actuates routing gates and stops on heavy-duty material handling conveyors, utilizing the 145 mm stroke to reposition loaded pallets efficiently.
Replacing the Airtac SI80 Standard Air Cylinder SI80X145 with the SAI80X145
To replace the discontinued SI80X145, order the SAI80X145. Verify the ISO 15552 mounting interface, 80 mm bore, 145 mm stroke, M20x1.5 rod thread and G3/8 port. Because this non-magnetic SKU cannot accept a sensor, order a -S variant if position detection is needed. When sizing, consider the 63 mm bore (1559 N push at 0.5 MPa) or 100 mm bore (3927 N push) as alternatives. Note that a standard cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant. For any stroke over 300 mm, guide the load to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X145
- ✓ 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 SI80X145 FAQ
Yes, the SI80X145 is discontinued. The direct replacement is the AirTAC SAI80X145. It shares the identical ISO 15552 mounting interface, 80 mm bore, 145 mm stroke, output force, G3/8 port and accessories, fitting directly into existing fixtures.
The 80 mm bore uses a G3/8 port and features a 25 mm rod with an M20x1.5 thread. Force output is 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a maximum theoretical force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X145
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X145 replacement — usually within 7-8 hours.