This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X820SH, 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 SI80X820SH
The AirTAC SI80 Standard Air Cylinder SI80X820SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 820mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X820SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke820 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X820SH
- 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 SI80X820SH
The AirTAC SI80X820SH is a discontinued double-acting ISO 15552 profile cylinder featuring an 80mm bore, 820mm stroke, and a G3/8 port. Delivering 2513 N push force at 0.5 MPa, it is superseded by the SAI80X820SH direct replacement. The SAI shares identical mounting, bore, stroke, and force, fitting existing fixtures perfectly. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life.
This configuration includes the -S magnet for legacy CS1-B/DS1-B sensors and the -H Viton seal, extending operating temperature from -20...+70 C up to 0-150 C. The 820mm length requires external guides to prevent rod-bending under side loads. Note that standard cushions only decelerate; for load holding on air loss, use the SAIL lock or BSAI clamp-lock variant.
Airtac SI80 Standard Air Cylinder SI80X820SH Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X820SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X820SH |
| Bore size | Ø80 mm |
| Stroke | 820 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 SAI80X820SH 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 SAI80X820SH 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 SI80X820SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×820 | 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 SI80X820SH Is Used
High-Temp Ejection
Uses the Viton H seal to push parts out of 150 C molding zones, relying on the 2513 N thrust at 0.5 MPa to break adhesion.
Pallet Transfer
Deploys the 820mm stroke to shift heavy pallets between lines, requiring external guides to absorb side-load during transit.
Vertical Lift Gate
Lifts a 128 kg mezzanine gate using 0.5 MPa air, demanding a SAIL lock or pilot check valve to prevent drift on air loss.
Replacing the Airtac SI80 Standard Air Cylinder SI80X820SH with the SAI80X820SH
To replace the discontinued SI80X820SH, order the SAI80X820SH. Verify the ISO 15552 interface, 80mm bore, 820mm stroke, G3/8 port, and M20x1.5 rod thread. The -S magnet enables CS1-B/DS1-B sensors, while the -H Viton seal handles 0-150 C. At 820mm, add external guides to prevent rod-bending. If sizing down, the 63mm bore yields 1559 N push at 0.5 MPa; sizing up, the 100mm bore yields 3927 N. Plain cylinders drift without air; for secure load holding, specify the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X820SH
- ✓ 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 SI80X820SH FAQ
Yes, the SI80X820SH is discontinued. The direct replacement is the SAI80X820SH. It shares the identical ISO 15552 mounting interface, 80mm bore, 820mm stroke, output force, and G3/8 port, fitting existing fixtures without modification.
The G3/8 port feeds a 25mm rod. Force ratings are: 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X820SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X820SH replacement — usually within 7-8 hours.