This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75H, 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 SI80X75H
The AirTAC SI80 Standard Air Cylinder SI80X75H 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 SAI80X75H, 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 → SAI80X75H
- 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 SI80X75H
The AirTAC SI80X75H is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore, 75 mm stroke, and a Viton H high-temperature seal (0 to 150 C). Delivering 2513 N push at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X75H. This direct successor shares the exact ISO 15552 mounting interface, bore, force, and cushioning.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot take a sensor; the SI family used CS1-B/DS1-B switches.
Airtac SI80 Standard Air Cylinder SI80X75H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75H |
| 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 SAI80X75H 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 SAI80X75H 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 SI80X75H
| 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 SI80X75H Is Used
High-Temp Ejection
Ejecting molded parts from hot environments using the Viton H seal rated for 0 to 150 C, leveraging 2513 N of push force.
Short-Stroke Clamping
Securing heavy workpieces with a 75 mm stroke, where the 128 kg vertical lift capacity handles substantial holding loads.
Product Diverting
Diverting heavy goods on a production line where the 80 mm bore provides enough thrust to move items reliably at speed.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75H with the SAI80X75H
To replace the SI80X75H, order the SAI80X75H. Verify the ISO 15552 interface, 80 mm bore, 75 mm stroke, G3/8 port, M20x1.5 rod thread, and your foot/flange/clevis mounting. Because this is a high-temp Viton H build, confirm the seal option on the SAI order. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. This plain cylinder does not hold load without live air; the cushion only decelerates. For load holding, use an external pilot check valve, a rod lock, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75H
- ✓ 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 SI80X75H FAQ
Yes, the SI80X75H is discontinued. The direct replacement is the SAI80X75H. It is a true ISO 15552 profile cylinder with the same 80 mm bore, 75 mm stroke, 2513 N force, G3/8 port, and mounting dimensions. You can install it directly into existing fixtures.
This 80 mm bore cylinder has a G3/8 air port and M20x1.5 rod thread. The thrust is 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. Operating speed is 30-800 mm/s.
Request a Quote for the SAI80X75H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75H replacement — usually within 7-8 hours.