This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X350SN, 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 SI32X350SN
The AirTAC SI32 Standard Air Cylinder SI32X350SN 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 SAI32X350SN, 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 → SAI32X350SN
- 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 SI32X350SN
The AirTAC SI32X350SN is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 350 mm stroke. It delivers 402 N push force at 0.5 MPa via a G1/8 port. AirTAC replaced it with the SAI32X350SN, a direct sharing the same interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family adds SAIL, SAIF, and BSAI variants the SI lacked. This -SN unit uses an NBR seal (-20 to +70 C) and a piston magnet for CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32X350SN Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X350SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X350SN |
| 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 SAI32X350SN 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 SAI32X350SN 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 SI32X350SN
| 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 SI32X350SN Is Used
Package Diverting
Sorts light parcels on a 350 mm stroke, using the 402 N push force to push cartons cleanly off a main belt line.
Small Part Ejection
Ejects machined small components from a fixture, where the 20 kg vertical lift capacity handles the ejection weight reliably.
Gate Actuation
Opens and closes light pneumatic flow gates over a 350 mm travel distance in material handling systems.
Replacing the Airtac SI32 Standard Air Cylinder SI32X350SN with the SAI32X350SN
To replace the SI32X350SN, order the SAI32X350SN direct, matching the ISO 15552 interface, 32 mm bore, 350 mm stroke, G1/8 port (PT/G/NPT), and mounting. The -S magnet works with CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. For higher force, the neighboring 40 mm bore gives 628 N push at 0.5 MPa. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because the 350 mm stroke exceeds 300 mm, use an external guide to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X350SN
- ✓ 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 SI32X350SN FAQ
Yes, the SI32X350SN is discontinued. The direct replacement is the SAI32X350SN. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 350 mm stroke, G1/8 port, and mounting fixtures.
This double-acting cylinder uses a G1/8 port. The thrust is 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max force of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X350SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X350SN replacement — usually within 7-8 hours.