This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X225, 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 SI80X225
The AirTAC SI80 Standard Air Cylinder SI80X225 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 225mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X225, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X225
- 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 SI80X225
The AirTAC SI80X225 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 225 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. Because this legacy unit is end-of-life, AirTAC specifies the SAI80X225 as the direct replacement, retaining the same interface, force, and mounting dimensions.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note this specific SKU lacks a magnet (-S) and cannot accept a position sensor.
Airtac SI80 Standard Air Cylinder SI80X225 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X225 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X225 |
| Bore size | Ø80 mm |
| Stroke | 225 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 SAI80X225 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 SAI80X225 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 SI80X225
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 SI80X225 Is Used
Press Fit Assembly
Drives bearings or pins into housings, utilizing the 2513 N push force at 0.5 MPa to seat components reliably without overstressing parts.
Pallet Diverting
Actuates diverter arms on heavy-duty material handling lines, where the 225 mm stroke and robust 80 mm bore provide the reach and thrust needed to redirect loaded pallets.
Replacing the Airtac SI80 Standard Air Cylinder SI80X225 with the SAI80X225
To replace the SI80X225, order the SAI80X225. Verify the ISO 15552 mounting interface (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT), and the M20x1.5 rod end. Because this SKU has no magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI variant if position feedback is required. For sizing, the 80 mm bore provides 2513 N push at 0.5 MPa; if less force is needed, a 63 mm bore yields 1559 N, while a 100 mm bore offers 3927 N. At 225 mm stroke, side-load and rod-bending stresses are moderate, but ensure adequate guiding. The air cushion only decelerates the load near stroke end; it does not hold position. For dead-load holding on air loss, use an external pilot check valve, a rod lock, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X225
- ✓ 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 SI80X225 FAQ
Yes, the SI80X225 is discontinued. The direct replacement is the AirTAC SAI80X225. It features the same ISO 15552 mounting interface, 80 mm bore, 225 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The G3/8 port feeds a 25 mm piston rod. At 0.5 MPa it provides 2513 N push and 2268 N pull force. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X225
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X225 replacement — usually within 7-8 hours.