This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X445, 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 SI32X445
The AirTAC SI32 Standard Air Cylinder SI32X445 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 445mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X445, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke445 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X445
- 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 SI32X445
The AirTAC SI32X445 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 445mm stroke, delivering 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced it with the SAI32X445, a direct upgrade sharing the exact interface, bore, stroke, force, port and mounting.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This no-magnet SKU cannot take a sensor, unlike legacy CS1-B/DS1-B switches. SAIL lock and SAIF valve variants expand options.
Airtac SI32 Standard Air Cylinder SI32X445 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X445 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X445 |
| Bore size | Ø32 mm |
| Stroke | 445 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 SAI32X445 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 SAI32X445 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 SI32X445
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×445 | 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 SI32X445 Is Used
Light-Duty Ejection
Provides reliable 402N push force at 0.5MPa for ejecting small machined aluminium parts from a fixture.
Package Diverting
Handles 445mm stroke routing of lightweight cardboard cartons on a packaging line at 30-800mm/s.
Replacing the Airtac SI32 Standard Air Cylinder SI32X445 with the SAI32X445
To replace the SI32X445, order the SAI32X445 and confirm the ISO 15552 mounting interface, 445mm stroke, G1/8 port, and M10x1.25 rod thread. Because this lacks the -S magnet, it cannot accept position sensors; order a magnet-equipped SAI if you need CS1-B/DS1-B equivalent switches. At 445mm, the 12mm rod is vulnerable to side-load bending—use external guides to prevent premature seal wear. If sizing up or down, neighbouring bores (40mm) offer 628N push at 0.5MPa. For load holding on air loss, note the cushion only decelerates; add an external pilot check valve or use the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X445
- ✓ 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 SI32X445 FAQ
Yes, the SI32X445 is discontinued. The direct replacement is the SAI32X445. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 445mm stroke, 402N force, G1/8 port and mounting fixtures.
The G1/8 port bore delivers push 402N and pull 345N at 0.5MPa, push 563N at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa. Operating pressure is 0.15-1.0MPa.
Request a Quote for the SAI32X445
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X445 replacement — usually within 7-8 hours.