This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X310, 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 SI80X310
The AirTAC SI80 Standard Air Cylinder SI80X310 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 310mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X310, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke310 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X310
- 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 SI80X310
The AirTAC SI80X310 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 310mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa through a G3/8 port. The direct replacement is the SAI80X310, sharing the same interface, force, and mounting.
The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure. This no-magnet SKU cannot take a sensor, unlike the CS1-B/DS1-B legacy switches used on -S models.
Airtac SI80 Standard Air Cylinder SI80X310 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X310 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X310 |
| Bore size | Ø80 mm |
| Stroke | 310 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 SAI80X310 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 SAI80X310 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 SI80X310
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×310 | 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 SI80X310 Is Used
Press Ejection
Provides 2513N of push force at 0.5MPa to eject formed metal parts from stamping dies, utilizing the 310mm stroke to clear the press bed entirely.
Pallet Diversion
Actuates heavy lane guides to divert loaded pallets on a packaging line, where the long 310mm travel ensures complete redirection without jamming.
Replacing the Airtac SI80 Standard Air Cylinder SI80X310 with the SAI80X310
To replace the SI80X310, order the SAI80X310. Confirm the ISO 15552 mounting interface, 80mm bore, 310mm stroke, G3/8 port (PT/G/NPT threads), and M20x1.5 rod thread. Because this 310mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load wear. Neighbouring bores are 63mm (1559N push @0.5MPa) or 100mm (3927N push @0.5MPa). The air cushion only decelerates; it does not hold load on air loss. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. This SKU lacks a magnet and cannot accept a sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X310
- ✓ 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 SI80X310 FAQ
Yes, the SI80X310 is discontinued. The direct replacement is the AirTAC SAI80X310. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 310mm stroke, G3/8 port, and mounting fixtures.
The SI80X310 delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. Operating speed is 30-800mm/s. It uses a G3/8 port and M20x1.5 rod thread.
Request a Quote for the SAI80X310
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X310 replacement — usually within 7-8 hours.