This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX115S, 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 SI80BX115S
The AirTAC SI80 Standard Air Cylinder SI80BX115S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 115mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX115S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX115S
- 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 SI80BX115S
The AirTAC SI80BX115S is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless piston rod, an integrated magnet, and a 115 mm stroke. Delivering 2513 N push force at 0.5 MPa, it is replaced by the SAI80BX115S. This direct successor shares the exact bore, port (G3/8), and mounting interface, dropping straight into existing fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80BX115S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX115S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX115S |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAI80BX115S 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 SAI80BX115S 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 SI80BX115S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SI80BX115S Is Used
Stainless Rod Clamping
Ideal for fixture clamping requiring corrosion resistance, using the SUS304 rod to secure heavy components with 2513 N push force.
Mid-Stroke Diversion
Precisely diverts products on a packaging line using the 115 mm stroke and adjustable air cushions for smooth end-of-travel deceleration.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX115S with the SAI80BX115S
To replace the SI80BX115S, order the SAI80BX115S, confirming the ISO 15552 mounting interface, 80 mm bore, 115 mm stroke, G3/8 port, and mounting accessory. The -S magnet works with legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. The -B rod is SUS304 stainless steel. If sizing up or down, check neighboring bores against the 2513 N push at 0.5 MPa. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX115S
- ✓ 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 SI80BX115S FAQ
Yes, the SI80BX115S is discontinued. The direct replacement is the SAI80BX115S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 115 mm stroke, force, G3/8 port, and mounting interface.
The G3/8 port feeds a 25 mm rod. Force outputs are 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 SAI80BX115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX115S replacement — usually within 7-8 hours.