This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX1200S, 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 SI80BX1200S
The AirTAC SI80 Standard Air Cylinder SI80BX1200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX1200S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX1200S
- 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 SI80BX1200S
The AirTAC SI80BX1200S is a discontinued double-acting ISO 15552 profile cylinder featuring an 80 mm bore, a 1200 mm stroke, and a SUS304 stainless steel piston rod. Generating 2513 N push force at 0.5 MPa, it is replaced by the SAI80BX1200S. This direct successor matches the bore, stroke, force, G3/8 port, and ISO 15552 mounting interface, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80BX1200S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX1200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX1200S |
| Bore size | Ø80 mm |
| Stroke | 1200 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 SAI80BX1200S 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 SAI80BX1200S 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 SI80BX1200S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1200 | 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 SI80BX1200S Is Used
Long-Stroke Diversion
Actuates large diverter gates across wide material handling lines, utilizing the 1200 mm stroke and 2513 N push force at 0.5 MPa to reposition heavy goods reliably.
High-Reach Palletizing
Lifts tiered pallet loads vertically; the SUS304 rod offers corrosion resistance in humid storage environments while providing a safe vertical lift of roughly 128 kg.
Large Press Ejection
Ejects formed parts from heavy industrial presses, relying on the 80 mm bore's 4523 N output at 0.9 MPa to clear bulky tooling effectively.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX1200S with the SAI80BX1200S
To replace the SI80BX1200S, order the SAI80BX1200S direct, confirming the ISO 15552 mounting interface, 80 mm bore, 1200 mm stroke, G3/8 port, and mounting accessory. The -B rod is SUS304 stainless steel, and the -S magnet works with legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). Sizing both ways: stepping up to a 100 mm bore yields 3927 N push at 0.5 MPa, while dropping to a 63 mm bore gives 1559 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL/BSAI lock for load holding. At 1200 mm, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX1200S
- ✓ 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 SI80BX1200S FAQ
Yes, the SI80BX1200S is discontinued. The direct replacement is the SAI80BX1200S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 1200 mm stroke, force, and G3/8 port, fitting directly into your existing fixtures.
The 80 mm bore features a G3/8 port and delivers a push force of 2513 N and pull of 2268 N at 0.5 MPa. At 0.7 MPa push is 3518 N, at 0.9 MPa it is 4523 N, and the theoretical max is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX1200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX1200S replacement — usually within 7-8 hours.