This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX20, 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 SI32AX20
The AirTAC SI32 Standard Air Cylinder SI32AX20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 20mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke20 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX20
- 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 SI32AX20
The AirTAC SI32AX20 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 20 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32AX20, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU lacks a magnet (-S) and cannot accept a position sensor; legacy SI sensors were CS1-B/DS1-B. Note the -A code indicates a SUS420J2 stainless steel piston rod for corrosion resistance.
Airtac SI32 Standard Air Cylinder SI32AX20 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX20 |
| Bore size | Ø32 mm |
| Stroke | 20 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 SAI32AX20 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 SAI32AX20 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32AX20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×20 | 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 SI32AX20 Is Used
Short Stroke Ejection
The 20 mm stroke provides rapid, compact ejection of small finished parts from a fixture or die into a collection chute.
Diverting Mechanism
Drives small diverter gates or sorting flaps in light packaging lines where a compact 32 mm profile barrel is required.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX20 with the SAI32AX20
To replace the discontinued SI32AX20, order the SAI32AX20, confirming the ISO 15552 mounting interface, 32 mm bore, 20 mm stroke, and G1/8 port (PT/G/NPT thread options). Because this SKU lacks the -S magnet, it cannot support sensing; if switches are needed, order the SAI32AX20S and use current AirTAC sensors. For sizing, the 32 mm bore yields 402 N push at 0.5 MPa; if more force is needed, step up to the 40 mm bore (628 N push). A plain cylinder does not hold load without live air—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants. The -A rod is SUS420J2 stainless steel; default is carbon steel.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX20
- ✓ 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 SI32AX20 FAQ
Yes, the AirTAC SI32AX20 is discontinued. The direct replacement is the SAI32AX20. It shares the identical ISO 15552 mounting interface, 32 mm bore, 20 mm stroke, output force, and G1/8 port, fitting directly into existing fixtures.
The 32 mm bore cylinder features a G1/8 air port. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and 724 N push at 0.9 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAI32AX20
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX20 replacement — usually within 7-8 hours.