This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X145CA, 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 SI80X145CA
The AirTAC SI80 Standard Air Cylinder SI80X145CA 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 SAI80X145CA, 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 → SAI80X145CA
- 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 SI80X145CA
The AirTAC SI80X145CA is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 145 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80X145CA, retaining the same CA clevis mounting, M20x1.5 rod thread, and output force.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Because this specific SI SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. For higher temperatures, a Viton H seal option extends operation to 150 C.
Airtac SI80 Standard Air Cylinder SI80X145CA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X145CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X145CA |
| 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 SAI80X145CA 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 SAI80X145CA 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 SI80X145CA
| 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 SI80X145CA Is Used
Press Ejection
Provides 2513 N of push force at 0.5 MPa to reliably eject formed metal parts from a press bed using the CA clevis mount.
Replacing the Airtac SI80 Standard Air Cylinder SI80X145CA with the SAI80X145CA
To replace the SI80X145CA, order the SAI80X145CA. Confirm the ISO 15552 interface, 80 mm bore, 145 mm stroke, G3/8 port (PT/G/NPT thread options), and the CA clevis mounting accessory. Since this SKU has no -S magnet, it cannot support position sensing; if switches are needed, specify a magnet on the new SAI order. When sizing, neighbouring bores are 63 mm (1559 N push @0.5 MPa) and 100 mm (3927 N push @0.5 MPa). A plain cylinder does not hold load on air loss—the 36 mm adjustable cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X145CA
- ✓ 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 SI80X145CA FAQ
Yes, the SI80X145CA is discontinued. The direct replacement is the SAI80X145CA. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 145 mm stroke, G3/8 port, CA clevis mount, and output force.
At 0.5 MPa it provides 2513 N push and 2268 N pull. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical max force is 513 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and it uses a G3/8 port with an M20x1.5 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X145CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X145CA replacement — usually within 7-8 hours.