This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X108S, 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 SI80X108S
The AirTAC SI80 Standard Air Cylinder SI80X108S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 108mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X108S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke108 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X108S
- 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 SI80X108S
The AirTAC SI80X108S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 2513 N push force at 0.5 MPa, it features a 25 mm rod, M20x1.5 thread, and a G3/8 port. The direct replacement is the SAI80X108S, matching the bore, stroke, force, port, and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This -S model uses CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X108S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X108S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X108S |
| Bore size | Ø80 mm |
| Stroke | 108 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 SAI80X108S 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 SAI80X108S 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 SI80X108S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×108 | 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 SI80X108S Is Used
Mid-Tonnage Pressing
Applies up to 4523 N at 0.9 MPa for seating bearings and stamping light sheet metal assemblies.
Pallet Diversion
Extends 108 mm to push heavy pallets onto secondary packaging lines using a robust 25 mm rod.
Replacing the Airtac SI80 Standard Air Cylinder SI80X108S with the SAI80X108S
To replace the SI80X108S, order the SAI80X108S. Confirm the ISO 15552 mounting interface, 80 mm bore, 108 mm stroke, G3/8 port, and your mounting accessory. The -S suffix indicates a piston magnet for CS1-B/DS1-B switches. For sizing, the 63 mm neighbor yields 1559 N push at 0.5 MPa, while the 100 mm bore offers 3927 N. 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 → SAI80X108S
- ✓ 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 SI80X108S FAQ
Yes, the SI80X108S is discontinued. The direct replacement is the SAI80X108S. It shares the same ISO 15552 mounting interface, 80 mm bore, 108 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
This double-acting cylinder has a G3/8 port. 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 force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X108S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X108S replacement — usually within 7-8 hours.