This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX20S, 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 SI32AX20S
The AirTAC SI32 Standard Air Cylinder SI32AX20S 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 SAI32AX20S, 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 → SAI32AX20S
- 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 SI32AX20S
The AirTAC SI32AX20S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 20mm stroke, SUS420J2 stainless rod and a built-in magnet. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX20S, which matches the exact ISO 15552 mounting interface, bore, stroke, force and accessories.
The SAI upgrade features 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. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32AX20S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX20S |
| 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 SAI32AX20S 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 SAI32AX20S 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 SI32AX20S
| 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 SI32AX20S Is Used
Short-Stroke Clamping
Ideal for compact 20mm clamping tasks where a 402N push force secures light workpieces without occupying excessive fixture space.
Stainless Rod Ejector
The SUS420J2 rod option provides corrosion resistance for small part ejection in humid or mildly wet manufacturing environments.
Sensor-Ready Diverting
The integrated magnet allows CS1-B/DS1-B sensors to confirm position on short diverter gates handling 20kg vertical loads.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX20S with the SAI32AX20S
To replace the SI32AX20S, order the SAI32AX20S. Confirm the ISO 15552 mounting interface, 32mm bore, 20mm stroke, G1/8 port and the -A SUS420J2 stainless rod. The -S magnet enables CS1-B/DS1-B switches. If you need more force, the neighbouring 40mm bore gives 628N push at 0.5MPa. For lower force, look at smaller bores. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX20S
- ✓ 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 SI32AX20S FAQ
Yes, the SI32AX20S is discontinued. The direct replacement is the SAI32AX20S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 20mm stroke, 402N force and G1/8 port.
It uses a G1/8 air port. Force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX20S replacement — usually within 7-8 hours.