This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX15, 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 SI80BX15
The AirTAC SI80 Standard Air Cylinder SI80BX15 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 15mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX15, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke15 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX15
- 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 SI80BX15
The AirTAC SI80BX15 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 15mm stroke, SUS304 stainless steel rod, and a G3/8 port. Delivering 2513N push at 0.5MPa, it is replaced by the SAI80BX15 direct. This upgrade retains identical mounting and force but adds two Y-shaped one-way piston seals for lower start-up pressure.
Because this SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the legacy line. Note that a plain cylinder drifts on air loss; the 36mm adjustable cushion only decelerates near stroke end, so use an external rod lock for holding.
Airtac SI80 Standard Air Cylinder SI80BX15 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX15 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX15 |
| Bore size | Ø80 mm |
| Stroke | 15 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 SAI80BX15 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 SAI80BX15 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 SI80BX15
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×15 | 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 SI80BX15 Is Used
Short-Stroke Clamping
Ideal for high-force 2513N clamping of heavy parts in machining fixtures using the 15mm stroke.
Transfer Diversion
Provides robust 80mm bore push force to divert heavy goods on packaging and material transfer lines.
Corrosive Ejecting
The SUS304 rod excels in washdown ejection tasks, ejecting parts reliably in humid environments.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX15 with the SAI80BX15
To replace the SI80BX15, order the SAI80BX15 to keep the exact ISO 15552 interface, 80mm bore, 15mm stroke, G3/8 port, and SUS304 rod. If sizing up or down, an adjacent 63mm bore gives 1559N push at 0.5MPa, while a 100mm bore yields 3927N. This non-magnetic SKU cannot take a sensor; order an -S variant if you need CS1-B/DS1-B switches. For load holding on air loss, select the SAIL or BSAI lock variant, as the cushion only decelerates. Strokes under 300mm rarely need side-load guides, but always verify rod-bending limits.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX15
- ✓ 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 SI80BX15 FAQ
Yes, the SI80BX15 is discontinued. The direct replacement is the SAI80BX15, which matches the ISO 15552 mounting interface, 80mm bore, 15mm stroke, force, and G3/8 port.
It features a G3/8 port and delivers 2513N push / 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a 513kgf maximum at 1.0MPa. The SAI upgrade uses two Y-shaped seals for low start-up pressure.
Request a Quote for the SAI80BX15
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX15 replacement — usually within 7-8 hours.