This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X350STC, 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 SI32X350STC
The AirTAC SI32 Standard Air Cylinder SI32X350STC 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 SAI32X350STC, 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 → SAI32X350STC
- 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 SI32X350STC
The AirTAC SI32X350STC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 350mm stroke. It delivers 402N push at 0.5MPa via a G1/8 port. AirTAC replaced it with the SAI32X350STC, a direct upgrade retaining the exact mounting interface, force, and TC trunnion.
The SAI features an upgraded two Y-shaped one-way piston seal for low start-up pressure. The SAI family adds SAIL lock, SAIF valve, and BSAI clamp variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32X350STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X350STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X350STC |
| 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 SAI32X350STC 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 SAI32X350STC 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 SI32X350STC
| 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 SI32X350STC Is Used
Diverting Arms
Drives lightweight routing gates on packaging lines, utilizing the 402N push force and 350mm travel to redirect cartons smoothly.
Small Part Ejection
Pushes completed components out of machining fixtures, where the TC trunnion mount accommodates slight misalignment during the ejection stroke.
Replacing the Airtac SI32 Standard Air Cylinder SI32X350STC with the SAI32X350STC
To replace the SI32X350STC, order SAI32X350STC to keep the ISO 15552 TC trunnion mount, 32mm bore, 350mm stroke, and G1/8 port. Because the 350mm stroke is >=300mm, use an external guide to prevent rod bending and side-load wear. If you need more force, the adjacent 40mm bore gives 628N at 0.5MPa. A plain cylinder drifts on air loss; for load holding, use an external rod lock or pilot check valve, or specify the SAIL lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X350STC
- ✓ 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 SI32X350STC FAQ
Yes, the SI32X350STC is discontinued. The direct replacement is the SAI32X350STC. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 350mm stroke, TC mount, and G1/8 port.
The 32mm bore uses a G1/8 port. It generates 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a maximum theoretical force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X350STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X350STC replacement — usually within 7-8 hours.