This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X350S, 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 SI32X350S
The AirTAC SI32 Standard Air Cylinder SI32X350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 350mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke350 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X350S
- 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 SI32X350S
The AirTAC SI32X350S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 350mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32X350S. This direct upgrade matches the exact ISO 15552 mounting interface, bore, stroke, output force, port and mounting accessories, fitting existing fixtures perfectly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32X350S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X350S |
| Bore size | Ø32 mm |
| Stroke | 350 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 SAI32X350S 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 SAI32X350S 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 SI32X350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×350 | 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 SI32X350S Is Used
Compact Part Ejection
Uses the 402N push force to eject small machined components from a fixture, fitting neatly into tight machinery footprints.
Package Diverting
Extends 350mm to push light cartons off a main conveyor belt line, relying on the 20kg vertical lift capacity for reliable actuation.
Light Material Handling
Transfers small bins between processing stations, where the compact 32mm bore and ISO 15552 mounts offer easy installation.
Replacing the Airtac SI32 Standard Air Cylinder SI32X350S with the SAI32X350S
To replace the SI32X350S, order the SAI32X350S. Confirm the ISO 15552 mounting interface, 32mm bore, 350mm stroke, G1/8 port (PT/G/NPT thread options) and your specific mounting accessory. The -S magnet enables CS1-B/DS1-B sensors. For sizing both ways: dropping to a smaller bore reduces force, while stepping up to a 40mm bore increases push force to 628N at 0.5MPa. A plain cylinder does not hold load without live air; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because the 350mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X350S
- ✓ 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 SI32X350S FAQ
Yes, the AirTAC SI32X350S is discontinued. The direct replacement is the SAI32X350S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 350mm stroke, 402N force, G1/8 port and mounting interface.
This 32mm bore double-acting cylinder uses a G1/8 air port. Force ratings are: 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X350S replacement — usually within 7-8 hours.