This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X330S, 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 SI80X330S
The AirTAC SI80 Standard Air Cylinder SI80X330S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 330mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X330S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke330 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X330S
- 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 SI80X330S
The AirTAC SI80X330S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 330 mm stroke. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X330S. This direct upgrade retains the exact ISO 15552 mounting interface, bore, stroke and output force, fitting existing fixtures perfectly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces SAIL, SAIF and BSAI lock variants absent in the legacy line. The -S suffix denotes a piston magnet for CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X330S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X330S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X330S |
| Bore size | Ø80 mm |
| Stroke | 330 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 SAI80X330S 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 SAI80X330S 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 SI80X330S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×330 | 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 SI80X330S Is Used
Pallet Diversion
Routes heavy pallets on packaging lines using the 2513 N push force at 0.5 MPa, ensuring reliable lateral shifting without mechanical binding.
Vertical Lift Gate
Raises material handling gates; the 330 mm stroke provides ample travel while the 128 kg vertical lift capacity handles substantial gate weights safely.
Press Ejection
Ejects formed metal components from press beds, utilising the adjustable 36 mm air cushions to decelerate the 25 mm rod smoothly at stroke ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80X330S with the SAI80X330S
To replace the SI80X330S, order the SAI80X330S, confirming the ISO 15552 mounting interface, 80 mm bore, 330 mm stroke, G3/8 port (PT/G/NPT) and mounting accessory. The -S magnet is present for legacy CS1-B/DS1-B switches, though the SAI replacement family uses current AirTAC switches. For sizing, the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore provides 3927 N. Note that a plain cylinder drifts on air loss as the air cushion only decelerates; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 330 mm stroke, prevent rod bending by using an external guide to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X330S
- ✓ 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 SI80X330S FAQ
Yes, the SI80X330S is discontinued. The direct replacement is the SAI80X330S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 330 mm stroke, output force, G3/8 port and mounting interface.
At 0.5 MPa it pushes 2513 N and pulls 2268 N. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical max force is 513 kgf at 1.0 MPa, with an operating speed of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X330S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X330S replacement — usually within 7-8 hours.