This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X335, 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 SI80X335
The AirTAC SI80 Standard Air Cylinder SI80X335 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 335mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X335, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke335 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X335
- 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 SI80X335
The AirTAC SI80X335 is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel and a 335 mm stroke. Delivering 2513 N push force at 0.5 MPa, it is replaced by the SAI80X335. This direct upgrade shares the exact bore, port (G3/8), and mounting interface, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this no-magnet SKU cannot take a sensor, unlike CS1-B/DS1-B equipped -S models. The SAI family also adds SAIL and BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X335 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X335 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X335 |
| Bore size | Ø80 mm |
| Stroke | 335 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 SAI80X335 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 SAI80X335 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 SI80X335
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×335 | 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 SI80X335 Is Used
Pallet Diversion
Pushes heavy pallets sideways onto secondary packaging lines using 2513 N thrust at 0.5 MPa.
Press Ejection
Ejects formed metal components from hydraulic presses, relying on adjustable 36 mm cushions to absorb impact.
Replacing the Airtac SI80 Standard Air Cylinder SI80X335 with the SAI80X335
To replace the SI80X335, order the SAI80X335. Verify the ISO 15552 mounting interface (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT), and the 335 mm stroke. This no-magnet SKU cannot accept position sensors; if sensing is needed, order an SAI80X335S for CS1-B/DS1-B compatibility. At 0.5 MPa it yields 2513 N push and 2268 N pull; neighboring bores are 63 mm (1559 N) and 100 mm (3927 N). For the 335 mm stroke, use external guides to prevent rod bending and side loads. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X335
- ✓ 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 SI80X335 FAQ
Yes, the SI80X335 is discontinued. The direct replacement is the SAI80X335. It shares the same ISO 15552 mounting interface, 80 mm bore, 335 mm stroke, output force, and G3/8 port, fitting directly into your existing fixtures.
The 80 mm bore has a G3/8 air port. It delivers 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 force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X335
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X335 replacement — usually within 7-8 hours.