This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX475S, 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 SI32AX475S
The AirTAC SI32 Standard Air Cylinder SI32AX475S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 475mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX475S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke475 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX475S
- 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 SI32AX475S
The AirTAC SI32AX475S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 475mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32AX475S. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke and force.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. This unit has a SUS420J2 stainless rod and a magnet for CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32AX475S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX475S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX475S |
| Bore size | Ø32 mm |
| Stroke | 475 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 SAI32AX475S 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 SAI32AX475S 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 SI32AX475S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×475 | 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 SI32AX475S Is Used
Small Parts Ejection
Ideal for pushing lightweight machined components out of an automated fixture using the 402N push force at 0.5 MPa.
Package Diverting
Sorts small cartons on a packaging line, with the 475mm stroke providing ample reach across a narrow belt.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX475S with the SAI32AX475S
To replace the SI32AX475S, order the SAI32AX475S. Confirm the ISO 15552 mounting interface, 32mm bore, 475mm stroke, G1/8 port, and mounting accessory. The SAI family adds SAIL (air-released lock), SAIF (built-in 4M valve) and BSAI (clamp-lock) variants the SI lacked. If sizing up, a 40mm bore yields 628N push at 0.5MPa; if sizing down, a 32mm bore provides 402N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding. The 475mm stroke requires external guides to prevent rod bending and side-load wear. The SAI uses current AirTAC switches; the SI uses legacy CS1-B/DS1-B.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX475S
- ✓ 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 SI32AX475S FAQ
Yes, the SI32AX475S is discontinued. The direct replacement is the SAI32AX475S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 475mm stroke, 402N force, G1/8 port and mounting interface. You simply order the SAI equivalent.
The 32mm bore uses a G1/8 air port and an M10x1.25 rod thread. Force ratings are: 402N push and 345N pull at 0.5 MPa, 563N push at 0.7 MPa, 724N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX475S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX475S replacement — usually within 7-8 hours.