This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X50SH, 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 SI80X50SH
The AirTAC SI80 Standard Air Cylinder SI80X50SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X50SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X50SH
- 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 SI80X50SH
The AirTAC SI80X50SH is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 2513 N push force at 0.5 MPa through its G3/8 port. Because this legacy SI unit is end-of-life, you should order the SAI80X50SH direct replacement. It matches the exact 80 mm bore, 50 mm stroke, M20x1.5 rod thread, and ISO 15552 mounting interface for a direct fixture swap.
The SAI upgrade features a revised piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. This specific SI80X50SH includes a piston magnet for legacy CS1-B/DS1-B sensors and a Viton H seal, extending operating temperature to 0-150 C.
Airtac SI80 Standard Air Cylinder SI80X50SH Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X50SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X50SH |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAI80X50SH 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 SAI80X50SH 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 SI80X50SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SI80X50SH Is Used
High-Temp Clamping
Secures heavy metal castings in machining fixtures, utilizing the Viton H seal to withstand ambient heat up to 150 C.
Pallet Diverter
Pushes 100+ kg pallets onto secondary packaging lines, relying on the 2513 N thrust at 0.5 MPa for reliable lateral movement.
Replacing the Airtac SI80 Standard Air Cylinder SI80X50SH with the SAI80X50SH
To replace the SI80X50SH, order the SAI80X50SH. Confirm the ISO 15552 mounting interface, G3/8 port, and any mounting accessories (LB, FA, CA, TC). The -S magnet and -H Viton seal are retained, though the SAI family uses current AirTAC switches instead of the legacy CS1-B/DS1-B. If you need more force, the 100 mm bore offers 3927 N push at 0.5 MPa; for less, the 63 mm bore provides 1559 N. A plain cylinder drifts on air loss as the cushion only decelerates, so use an external rod lock or pilot check valve for load holding. The SAI family also adds SAIL, SAIF, and BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X50SH
- ✓ 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 SI80X50SH FAQ
Yes, the AirTAC SI80X50SH is discontinued. The direct replacement is the SAI80X50SH. It features the same ISO 15552 mounting interface, 80 mm bore, 50 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The bore is 80 mm with a G3/8 air port. 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, and a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X50SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X50SH replacement — usually within 7-8 hours.