This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X408S, 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 SI32X408S
The AirTAC SI32 Standard Air Cylinder SI32X408S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 408mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X408S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke408 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X408S
- 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 SI32X408S
The AirTAC SI32X408S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 408mm stroke, delivering 402N push at 0.5MPa. AirTAC replaced it with the SAI32X408S, a direct upgrade retaining the exact ISO 15552 mounting interface, G1/8 port, and M10x1.25 rod thread.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The -S magnet works with legacy CS1-B/DS1-B sensors, while Viton H seals raise heat resistance to 150C.
Airtac SI32 Standard Air Cylinder SI32X408S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X408S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X408S |
| Bore size | Ø32 mm |
| Stroke | 408 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 SAI32X408S 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 SAI32X408S 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 SI32X408S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×408 | 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 SI32X408S Is Used
Compact Part Ejection
Uses the 402N push force to eject small machined components from a fixture over the 408mm travel distance.
Package Routing
Diverts lightweight cartons on a packaging line where the compact 32mm bore saves space.
Pallet Tagging
Extends a labeling applicator 408mm to reach pallets, relying on the magnetic piston for position confirmation.
Replacing the Airtac SI32 Standard Air Cylinder SI32X408S with the SAI32X408S
To replace the SI32X408S, order the SAI32X408S and confirm the ISO 15552 mounting accessory, G1/8 port, and -S magnet. For sizing both ways, a 40mm bore increases force to 628N push at 0.5MPa, while dropping to 0.5MPa yields 402N. Because the 408mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load wear. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant adds a built-in valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X408S
- ✓ 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 SI32X408S FAQ
Yes, the SI32X408S is discontinued. The direct replacement is the SAI32X408S, which shares the same ISO 15552 mounting interface, 32mm bore, 408mm stroke, and G1/8 port.
It has a G1/8 port. The force ratings are 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X408S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X408S replacement — usually within 7-8 hours.