This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX30S, 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 SI80BX30S
The AirTAC SI80 Standard Air Cylinder SI80BX30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 30mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX30S
- 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 SI80BX30S
The AirTAC SI80BX30S is a discontinued double-acting ISO 15552 profile cylinder with a 30 mm stroke and an 80 mm bore, delivering a push force of 2513 N at 0.5 MPa. This specific unit features a SUS304 stainless steel piston rod (-B) and a built-in magnet (-S) for legacy CS1-B/DS1-B switches. It operates on a G3/8 air port.
AirTAC replaced this legacy unit with the SAI80BX30S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, and output force. The SAI family introduces an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life.
Airtac SI80 Standard Air Cylinder SI80BX30S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX30S |
| Bore size | Ø80 mm |
| Stroke | 30 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 SAI80BX30S 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 SAI80BX30S 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 SI80BX30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×30 | 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 SI80BX30S Is Used
Washdown Clamping
Ideal for food or chemical processing fixtures requiring corrosion resistance, using the SUS304 rod to secure components during washing cycles.
Short-Stroke Ejection
Provides a robust 2513 N push at 0.5 MPa to eject dense machined metal parts from CNC fixtures over a compact 30 mm travel.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX30S with the SAI80BX30S
To replace the SI80BX30S, order the SAI80BX30S and confirm the ISO 15552 mounting interface, 80 mm bore, 30 mm stroke, G3/8 port, and your specific mounting accessory. Retain the -B SUS304 stainless rod and -S magnet configuration; note the SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B sensors. If you need to size up or down, neighboring bores are 63 mm and 100 mm, with the 63 mm bore providing 1559 N of push force at 0.5 MPa. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve. The SAIF variant integrates a 4M valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX30S
- ✓ 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 SI80BX30S FAQ
Yes, the AirTAC SI80BX30S is discontinued. The direct replacement is the SAI80BX30S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 30 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The bore is 80 mm with a G3/8 air port. Force ratings are: push 2513 N and pull 2268 N at 0.5 MPa, push 3518 N at 0.7 MPa, push 4523 N at 0.9 MPa, and a theoretical maximum force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX30S replacement — usually within 7-8 hours.