This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75S, 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 SI80X75S
The AirTAC SI80 Standard Air Cylinder SI80X75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X75S
- 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 SI80X75S
The AirTAC SI80X75S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 2513 N of push force and 2268 N of pull force at 0.5 MPa. It features a 25 mm rod, M20x1.5 rod thread, and a G3/8 air port. The direct replacement is the SAI80X75S, which matches the original bore, stroke, output force, port, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade introduces a refined piston seal utilizing two Y-shaped one-way elements for extended longevity and lower start-up pressure. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI line lacked. This -S model includes a piston magnet for CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X75S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75S |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAI80X75S 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 SAI80X75S 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 SI80X75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SI80X75S Is Used
Package Diverting
Drives diverter arms on sorting lines, utilizing the 75 mm stroke to push parcels efficiently without excessive overtravel.
Pallet Stopping
Acts as a robust pneumatic stop for heavy pallets, using the 2513 N push force at 0.5 MPa to halt inbound loads securely.
Clamp Actuation
Provides reliable clamping pressure for machining fixtures, holding workpieces firmly during secondary milling operations.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75S with the SAI80X75S
To replace the discontinued SI80X75S, order the SAI80X75S and verify the ISO 15552 mounting interface, 80 mm bore, 75 mm stroke, and G3/8 port (available in PT, G, or NPT threads). Retain your existing mounting accessory (LB, FA, TC, etc.) and confirm the -S magnet for position sensing. Sizing both ways: the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore offers 3927 N. A plain cylinder drifts on air loss because the air cushion only decelerates near stroke end; for secure load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Rod material choices include carbon steel, SUS420J2, or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75S
- ✓ 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 SI80X75S FAQ
Yes, the SI80X75S is discontinued. The direct replacement is the SAI80X75S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 75 mm stroke, G3/8 port, and mounting interface.
It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical max of 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.
Request a Quote for the SAI80X75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75S replacement — usually within 7-8 hours.