This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X290, 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 SI80X290
The AirTAC SI80 Standard Air Cylinder SI80X290 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 290mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X290, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X290
- 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 SI80X290
The AirTAC SI80X290 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 290mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa, operating via a G3/8 port. Because this legacy unit is end-of-life, you should order the SAI80X290 direct replacement, which matches the ISO 15552 mounting interface, bore, stroke, force and port exactly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this specific SKU lacks the -S magnet, so it cannot accept a CS1-B/DS1-B sensor.
Airtac SI80 Standard Air Cylinder SI80X290 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X290 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X290 |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAI80X290 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 SAI80X290 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 SI80X290
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SI80X290 Is Used
Pallet Diversion
Actuates heavy lane diverters on packaging lines, utilizing the 2513N push force to shift loaded pallets smoothly.
Vertical Lift Gate
Raises and lowers mezzanine safety gates, safely handling loads near the 128kg vertical lift threshold.
Press Ejection
Ejects formed metal parts from stamping presses, relying on adjustable 36mm air cushions to brake at stroke end.
Replacing the Airtac SI80 Standard Air Cylinder SI80X290 with the SAI80X290
To replace the SI80X290, order the SAI80X290. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT) and the 290mm stroke. Since this SKU has no -S suffix, it cannot host a magnetic sensor; if position detection is needed, select an SAI80X290S. For sizing, a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. At 290mm stroke, ensure adequate guide support to prevent rod bending and side-load wear. A plain cylinder does not hold load without live air; for load holding on air loss, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X290
- ✓ 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 SI80X290 FAQ
Yes, the SI80X290 is discontinued. The direct replacement is the SAI80X290. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 290mm stroke, 25mm rod, G3/8 port and mounting interface.
At 0.5MPa it provides 2513N push and 2268N pull. At 0.7MPa push is 3518N, and at 0.9MPa it is 4523N. The theoretical max force is 513kgf at 1.0MPa, with an operating speed of 30-800mm/s.
Request a Quote for the SAI80X290
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X290 replacement — usually within 7-8 hours.