This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X340SCA, 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 SI80X340SCA
The AirTAC SI80 Standard Air Cylinder SI80X340SCA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 340mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X340SCA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke340 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X340SCA
- 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 SI80X340SCA
The AirTAC SI80X340SCA is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, adjustable air cushions, and a 340 mm stroke. Delivering 2513 N push and 2268 N pull at 0.5 MPa, it is replaced by the SAI80X340SCA. This direct upgrade keeps the exact bore, force, G3/8 port, and CA mounting interface. The SAI uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
The SAI family adds SAIL, SAIF, and BSAI variants the SI lacked. This -S SKU has a piston magnet for CS1-B/DS1-B sensors. Rod material options include carbon steel, SUS420J2, or SUS304, with Viton H seals for high temps.
Airtac SI80 Standard Air Cylinder SI80X340SCA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X340SCA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X340SCA |
| Bore size | Ø80 mm |
| Stroke | 340 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 SAI80X340SCA 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 SAI80X340SCA 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 SI80X340SCA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×340 | 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 SI80X340SCA Is Used
Pallet Diversion
Actuates heavy lane guide arms to divert loaded pallets on a packaging line, utilizing the 2513 N push force to overcome lateral friction.
Press Ejection
Pushes stamped metal parts out of a press bed using the 340 mm stroke, requiring the external guide to handle the extended rod length safely.
Vertical Lift Gate
Raises a 120 kg mezzanine safety gate, staying within the 128 kg vertical lift capacity, with a pilot check valve to prevent drifting.
Replacing the Airtac SI80 Standard Air Cylinder SI80X340SCA with the SAI80X340SCA
To replace the SI80X340SCA, order the SAI80X340SCA. It drops into existing fixtures via the ISO 15552 mounting interface, matching the 80 mm bore, 340 mm stroke, 2513 N output, G3/8 port, and CA clevis mount. Confirm your thread standard (PT, G, or NPT) and retain the magnet for current AirTAC switches. If you need more force, the 100 mm bore yields 3927 N push at 0.5 MPa; if less is acceptable, the 63 mm bore gives 1559 N. Because the 340 mm stroke is long, use an external guide to prevent rod bending and side loads. A plain cylinder drifts without air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X340SCA
- ✓ 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 SI80X340SCA FAQ
Yes, the AirTAC SI80X340SCA is discontinued. The direct replacement is the SAI80X340SCA. It features the same ISO 15552 mounting interface, 80 mm bore, 340 mm stroke, output force, G3/8 port, and CA clevis mounting, so it fits existing fixtures directly.
The bore is 80 mm with a G3/8 air port and an M20x1.5 rod thread. Force output is 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 maximum of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X340SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X340SCA replacement — usually within 7-8 hours.