This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX15S, 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 SI80BX15S
The AirTAC SI80 Standard Air Cylinder SI80BX15S 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 SAI80BX15S, 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 → SAI80BX15S
- 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 SI80BX15S
The AirTAC SI80BX15S is a discontinued double-acting ISO 15552 profile cylinder with a 15 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80BX15S, matching the bore, stroke, force, port and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This SI80BX15S uses a SUS304 stainless rod (B option) and a piston magnet (S) for CS1-B/DS1-B switches.
Airtac SI80 Standard Air Cylinder SI80BX15S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX15S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX15S |
| 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 SAI80BX15S 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 SAI80BX15S 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 SI80BX15S
| 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 SI80BX15S Is Used
Short-Stroke Clamping
Ideal for high-force 2513 N clamping tasks in machining fixtures where a 15 mm stroke securely holds stainless workpieces without marring.
Corrosive Ejecting
The SUS304 rod option excels in washdown ejection stations, pushing parts out of forming dies using the 2268 N pull force at 0.5 MPa.
Transfer Diverting
Provides robust 80 mm bore diverting force on packaging lines, using the integrated magnet for CS1-B/DS1-B position sensing at stroke end.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX15S with the SAI80BX15S
To replace the SI80BX15S, order the SAI80BX15S. Confirm the ISO 15552 mounting interface, 80 mm bore, 15 mm stroke, G3/8 port, and the -B SUS304 rod with -S magnet. The SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding use SAIL, BSAI, or a pilot check valve. Neighbouring bores: 63 mm gives 1559 N push, 100 mm gives 3927 N push at 0.5 MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX15S
- ✓ 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 SI80BX15S FAQ
Yes, the SI80BX15S is discontinued. The direct replacement is the SAI80BX15S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 80 mm bore, 15 mm stroke, force, G3/8 port and mounting accessories.
This double-acting cylinder uses a G3/8 air port. It delivers 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 max of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX15S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX15S replacement — usually within 7-8 hours.