This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX220S, 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 SI80BX220S
The AirTAC SI80 Standard Air Cylinder SI80BX220S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 220mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX220S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke220 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX220S
- 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 SI80BX220S
The AirTAC SI80BX220S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 220mm stroke. It features a SUS304 stainless piston rod (-B) and a built-in magnet (-S) for legacy CS1-B/DS1-B switches. Delivering 2513 N push force at 0.5 MPa via a G3/8 port, its direct replacement is the SAI80BX220S, sharing the exact ISO 15552 mounting interface, bore, stroke, and output force.
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. A plain cylinder drifts on air loss; the cushion only decelerates, so use a pilot check valve for load holding.
Airtac SI80 Standard Air Cylinder SI80BX220S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX220S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX220S |
| Bore size | Ø80 mm |
| Stroke | 220 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 SAI80BX220S 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 SAI80BX220S 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 SI80BX220S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×220 | 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 SI80BX220S Is Used
Food-Grade Diverter
Uses the SUS304 stainless rod for washdown corrosion resistance, providing 2513 N to push heavy product lanes.
Vertical Press Fixture
Delivers 3518 N at 0.7 MPa to press components, requiring a pilot check valve since cushions only decelerate.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX220S with the SAI80BX220S
To replace the SI80BX220S, order the SAI80BX220S. Confirm the ISO 15552 mounting interface, 80mm bore, 220mm stroke, G3/8 port (PT/G/NPT threads), and mounting accessory. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B), and the -B SUS304 rod provides corrosion resistance. For load sizing, the 2513 N push force at 0.5 MPa safely handles about 1508 N. If you need more force, the neighbouring 100mm bore offers 3927 N push at 0.5 MPa; if less is needed, the 63mm bore provides 1559 N. Because this plain cylinder does not hold load on air loss, use an external rod lock or pilot check valve, or specify the SAIL/BSAI lock variant. At 220mm stroke, side-load is minimal, but ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX220S
- ✓ 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 SI80BX220S FAQ
Yes, the SI80BX220S is discontinued. The direct replacement is the SAI80BX220S. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 220mm stroke, G3/8 port, output force, and mounting interface.
The 80mm bore uses a G3/8 port. It generates 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 SAI80BX220S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX220S replacement — usually within 7-8 hours.