This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X355, 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 SI80X355
The AirTAC SI80 Standard Air Cylinder SI80X355 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 355mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X355, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke355 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X355
- 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 SI80X355
The AirTAC SI80X355 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 355mm stroke. Delivering 2513N push force at 0.5MPa via a G3/8 port, its direct replacement is the SAI80X355. This current-production SAI model preserves the exact ISO 15552 mounting interface, bore, stroke and output force for existing fixtures.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S), meaning it cannot accept CS1-B/DS1-B sensors. If your fixture requires load holding on air loss, step up to the SAIL or BSAI lock variants, as standard cushions only decelerate.
Airtac SI80 Standard Air Cylinder SI80X355 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X355 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X355 |
| Bore size | Ø80 mm |
| Stroke | 355 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 SAI80X355 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 SAI80X355 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 SI80X355
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×355 | 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 SI80X355 Is Used
Pallet Diversion
Actuates heavy lane diverters on packaging lines, using the 2513N push force at 0.5MPa to shift loaded pallets smoothly.
Vertical Lift Gate
Raises and lowers material handling gates; the 355mm stroke provides ample travel while the 80mm bore handles the gate mass.
Press Ejection
Ejects formed metal parts from hydraulic presses, relying on adjustable 36mm air cushions to decelerate the rod at stroke end.
Replacing the Airtac SI80 Standard Air Cylinder SI80X355 with the SAI80X355
To replace the SI80X355, order the SAI80X355 direct: it matches the 80mm bore, 355mm stroke, G3/8 port, M20x1.5 rod thread and ISO 15552 mounting. Because this SKU has no magnet, it cannot host position sensors; if you need switching, select an SAI80X355S and use current AirTAC switches. When sizing, neighbouring bores offer alternatives: a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore provides 3927N. For the 355mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—cushions only decelerate—so for held loads choose the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X355
- ✓ 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 SI80X355 FAQ
Yes, the AirTAC SI80X355 is discontinued. The direct replacement is the SAI80X355. It is a true ISO 15552 profile cylinder that matches the 80mm bore, 355mm stroke, G3/8 port, output force and mounting interface, dropping directly into existing fixtures.
The 80mm bore uses a G3/8 port. It generates 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical maximum force of 513 kgf at 1.0MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAI80X355
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X355 replacement — usually within 7-8 hours.