This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X445S, 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 SI32X445S
The AirTAC SI32 Standard Air Cylinder SI32X445S 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 SAI32X445S, 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 → SAI32X445S
- 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 SI32X445S
The AirTAC SI32X445S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 445 mm stroke. Generating 402 N push at 0.5 MPa, it is superseded by the SAI32X445S direct replacement. This successor maintains the exact ISO 15552 mounting interface, G1/8 port, and output force, fitting existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors; the SAI family also adds SAIL lock and SAIF valve variants absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32X445S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X445S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X445S |
| 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 SAI32X445S 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 SAI32X445S 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 SI32X445S
| 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 SI32X445S Is Used
Compact Part Ejection
Uses the 402 N push force to eject small machined components from a fixture, fitting easily into tight machinery envelopes.
Light Transfer Routing
Actuates diverter gates on a packaging line, leveraging the 445 mm stroke to redirect lightweight cartons between belts.
Replacing the Airtac SI32 Standard Air Cylinder SI32X445S with the SAI32X445S
To replace the SI32X445S, order the SAI32X445S, confirming the ISO 15552 interface, 32 mm bore, 445 mm stroke, G1/8 port, and mounting accessory. Because this is a 445 mm stroke, use external guides to prevent rod bending and side-load wear. If sizing down, a 40 mm bore yields 628 N push; if sizing up, ensure your fixture handles the force. Note that a standard cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL lock variant. The -S magnet works with CS1-B/DS1-B switches; SAI uses current AirTAC sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X445S
- ✓ 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 SI32X445S FAQ
Yes, the SI32X445S is discontinued. The direct replacement is the SAI32X445S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 445 mm stroke, G1/8 port, and mounting hardware.
This double-acting cylinder delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s. It features a G1/8 port and a 27 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X445S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X445S replacement — usually within 7-8 hours.