This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX210, 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 SI80BX210
The AirTAC SI80 Standard Air Cylinder SI80BX210 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 210mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX210, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX210
- 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 SI80BX210
The AirTAC SI80BX210 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 210mm stroke. Built with an extruded aluminum barrel and a SUS304 stainless piston rod, it delivers 2513 N of push force at 0.5 MPa and uses a G3/8 air port. As a legacy unit, it must be replaced by the current-production SAI80BX210.
The SAI80BX210 is a direct replacement, matching the exact ISO 15552 mounting interface, stroke, output force, and port size. The upgraded SAI piston seal uses two Y-shaped one-way elements for low start-up pressure and extended life. Note that this specific SKU lacks a magnet and cannot accept a position sensor.
Airtac SI80 Standard Air Cylinder SI80BX210 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX210 |
| Bore size | Ø80 mm |
| Stroke | 210 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 SAI80BX210 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 SAI80BX210 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 SI80BX210
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×210 | 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 SI80BX210 Is Used
Stainless Rod Clamping
Ideal for washdown or corrosive manufacturing lines where the SUS304 rod resists rust while delivering 2513 N of clamping thrust at 0.5 MPa.
Heavy Diverter
Acts as a robust diverter on high-throughput conveyors, using the 210mm stroke to push heavy product lanes without side-load failure.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX210 with the SAI80BX210
To replace the discontinued SI80BX210, order the SAI80BX210. Verify your ISO 15552 mounting fixtures (LB, FA, TC, etc.), the 210mm stroke, and the G3/8 port. Because this unit has a -B SUS304 rod, confirm if your environment still requires the stainless steel rod over the standard carbon steel. This SKU has no magnet (-S), so it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position feedback is needed. Sizing both ways: the 80mm bore yields 2513 N push at 0.5 MPa, while a neighbouring 63mm bore offers 1559 N. Since the 210mm stroke exceeds 300mm? No, but for any future stroke over 300mm, add external guides to prevent rod bending. A plain cylinder drifts without air; for load holding, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX210
- ✓ 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 SI80BX210 FAQ
Yes, the SI80BX210 is discontinued. The direct replacement is the SAI80BX210. It shares the identical ISO 15552 mounting interface, 80mm bore, 210mm stroke, G3/8 port, and SUS304 rod, fitting directly into your existing fixtures.
This double-acting cylinder features a G3/8 air port and an M20x1.5 rod thread. The thrust ratings 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 maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX210 replacement — usually within 7-8 hours.