This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X225S, 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 SI80X225S
The AirTAC SI80 Standard Air Cylinder SI80X225S 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 SAI80X225S, 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 → SAI80X225S
- 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 SI80X225S
The AirTAC SI80X225S is a discontinued double-acting ISO 15552 profile cylinder featuring a 225 mm stroke and a G3/8 port. Generating 2513 N push force at 0.5 MPa, it is replaced by the SAI80X225S. This direct upgrade shares the exact ISO 15552 mounting interface, bore, and output force.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SI-S magnet supports CS1-B/DS1-B switches, while the SAI family adds SAIL, SAIF, and BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X225S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X225S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X225S |
| 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 SAI80X225S 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 SAI80X225S 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 SI80X225S
| 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 SI80X225S Is Used
Pallet Diversion
Actuates heavy lane diverters on packaging lines, using the 2513 N push force to shift loaded pallets reliably.
Vertical Lift Gate
Raises and lowers mezzanine safety gates, safely managing the 128 kg vertical lift capacity calculated at 0.5 MPa.
Press Ejection
Ejects formed metal parts from hydraulic presses, benefiting from the adjustable 36 mm air cushions at both ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80X225S with the SAI80X225S
To replace the SI80X225S, order the SAI80X225S, confirming the ISO 15552 interface, 80 mm bore, 225 mm stroke, G3/8 port, and magnet. Note that 225 mm is a nonstandard stroke, so verify dimensions. For sizing, neighbouring bores (63 mm or 100 mm) offer 2182 N or 3927 N push at 0.7 MPa respectively. Because the stroke exceeds 300 mm, ensure external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X225S
- ✓ 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 SI80X225S FAQ
Yes, the SI80X225S is discontinued. The direct replacement is the SAI80X225S. It shares the same ISO 15552 mounting interface, 80 mm bore, 225 mm stroke, output force, G3/8 port, and accessories, fitting existing fixtures perfectly.
The 80 mm bore features a G3/8 port and M20x1.5 rod thread. It delivers 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 max of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X225S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X225S replacement — usually within 7-8 hours.