This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X35SH, 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 SI80X35SH
The AirTAC SI80 Standard Air Cylinder SI80X35SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 35mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X35SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X35SH
- 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 SI80X35SH
The AirTAC SI80X35SH is a discontinued double-acting ISO 15552 profile cylinder with a 35 mm stroke. Built for an 80 mm bore, it delivers 2513 N push force at 0.5 MPa. The direct replacement is the SAI80X35SH, matching the exact bore, stroke, G3/8 port, and ISO 15552 mounting interface for seamless fixture integration. This unit includes the -S magnet for CS1-B/DS1-B sensors and the -H Viton seal for 0-150 C high-temperature environments.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy SI line.
Airtac SI80 Standard Air Cylinder SI80X35SH Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X35SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X35SH |
| Bore size | Ø80 mm |
| Stroke | 35 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 SAI80X35SH 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 SAI80X35SH 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 SI80X35SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×35 | 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 SI80X35SH Is Used
High-Temperature Ejection
Ideal for plastic injection molding ejectors utilizing the -H Viton seal to withstand 0-150 C ambient heat while providing 2513 N of push force at 0.5 MPa.
Heavy Package Diverting
Provides rapid 30-800 mm/s actuation on packaging lines to push heavy pallets or crates, using the built-in magnet for position confirmation.
Replacing the Airtac SI80 Standard Air Cylinder SI80X35SH with the SAI80X35SH
To replace the SI80X35SH, order the SAI80X35SH direct, confirming the ISO 15552 interface, 80 mm bore, 35 mm stroke, G3/8 port, and -S magnet. The SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B. If you need to scale, neighboring bores are 63 mm and 100 mm; at 0.5 MPa this 80 mm bore yields 2513 N push and 2268 N pull. Remember, a plain cylinder drifts on air loss as the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The -H Viton seal handles 0-150 C heat.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X35SH
- ✓ 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 SI80X35SH FAQ
Yes, the AirTAC SI80X35SH is discontinued. The direct replacement is the SAI80X35SH. It is a true ISO 15552 profile cylinder that matches the original 80 mm bore, 35 mm stroke, G3/8 port, and mounting interface, fitting existing fixtures perfectly.
The 80 mm bore features a G3/8 air port and a 25 mm piston rod. Force output 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, with a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X35SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X35SH replacement — usually within 7-8 hours.