This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX180S, 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 SI32 Standard Air Cylinder SI32BX180S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX180S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 180mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX180S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke180 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX180S
- 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 SI32 Standard Air Cylinder SI32BX180S
The AirTAC SI32BX180S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 180mm stroke, SUS304 stainless piston rod, and a built-in magnet. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32BX180S. This drop-in upgrade shares the exact ISO 15552 mounting interface, G1/8 port, and M10x1.25 rod thread.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For your 402 N output, the safe working load is roughly 241 N, translating to a 20 kg vertical lift with a 2:1 margin. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S magnet supports legacy CS1-B/DS1-B sensors, while SAI uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32BX180S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX180S |
| Bore size | Ø32 mm |
| Stroke | 180 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI32BX180S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32BX180S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX180S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×180 | 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 SI32 Standard Air Cylinder SI32BX180S Is Used
Small Part Ejection
Uses the 402 N push force to reliably eject small machined components from a fixture without damaging the surface.
Package Diverting
Actuates a diverter arm on a packaging line, where the 180mm stroke provides the exact reach needed to redirect lightweight boxes.
Lab Test Positioning
Moves sample trays into testing position, leveraging the SUS304 stainless rod for corrosion resistance in humid laboratory environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX180S with the SAI32BX180S
To replace the SI32BX180S, order the SAI32BX180S. Verify the ISO 15552 interface, 32mm bore, 180mm stroke, G1/8 port, and mounting accessory. The -B rod is SUS304 stainless steel, and -S denotes the magnet for position sensing. For sizing, a 40mm bore yields 628 N push at 0.5 MPa if more force is needed, while a 32mm bore is optimal for lighter loads. 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. At 180mm stroke, side-load and rod-bending risks are low, but ensure proper guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX180S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI32 Standard Air Cylinder SI32BX180S FAQ
Yes, the SI32BX180S is discontinued. The exact drop-in replacement is the SAI32BX180S. It shares the same ISO 15552 mounting interface, 32mm bore, 180mm stroke, output force, G1/8 port, and mounting accessories, fitting directly into existing fixtures.
The 32mm bore features a G1/8 air port and M10x1.25 rod thread. Force output is 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, with a theoretical max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX180S replacement — usually within 7-8 hours.