This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X25H, 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 SI80X25H
The AirTAC SI80 Standard Air Cylinder SI80X25H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X25H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X25H
- 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 SI80X25H
The AirTAC SI80X25H is a discontinued double-acting ISO 15552 profile cylinder with a 25 mm stroke and Viton H high-temperature seals (0-150 C). It delivers 2513 N push at 0.5 MPa through its G3/8 port. The direct replacement is the SAI80X25H, which shares the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this SKU lacks a magnet (-S), it cannot accept CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X25H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X25H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X25H |
| Bore size | Ø80 mm |
| Stroke | 25 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 SAI80X25H 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 SAI80X25H 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 SI80X25H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×25 | 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 SI80X25H Is Used
High-Temp Clamping
Short-stroke clamping of metal parts in hot environments up to 150 C using the Viton H seal kit.
Ejector Mechanism
Provides a robust 2513 N push at 0.5 MPa to eject dense finished components from a press bed.
Heavy Diverting
Short 25 mm stroke diverting arm handling heavy pallets safely within a compact footprint.
Replacing the Airtac SI80 Standard Air Cylinder SI80X25H with the SAI80X25H
To replace the SI80X25H, order the SAI80X25H. Confirm the ISO 15552 mounting interface, the 80 mm bore, the 25 mm stroke, the G3/8 port, and your Viton H high-temperature seal requirement. If you need position sensing, note this non-magnetic SKU cannot take a switch; you must specify an SAI model with a magnet. A standard cylinder drifts on air loss—the cushion only decelerates near stroke end—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. For sizing, the 80 mm bore yields 2513 N push at 0.5 MPa; step down to a 63 mm bore for 1559 N, or up to 100 mm for 3927 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X25H
- ✓ 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 SI80X25H FAQ
Yes, the AirTAC SI80X25H is discontinued. The direct replacement is the SAI80X25H. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 25 mm stroke, output force, G3/8 port, and mounting interface.
The G3/8 port feeds a 25 mm piston rod delivering 2513 N push and 2268 N pull at 0.5 MPa. 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 SAI80X25H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X25H replacement — usually within 7-8 hours.