This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX45S, 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 SI32AX45S
The AirTAC SI32 Standard Air Cylinder SI32AX45S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 45mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX45S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke45 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX45S
- 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 SI32AX45S
The AirTAC SI32AX45S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 45mm stroke, SUS420J2 stainless rod, and a piston magnet. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32AX45S. This direct upgrade shares identical ISO 15552 mounting dimensions, stroke, and force, but adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
The original SI uses CS1-B/DS1-B sensors, while the SAI family supports current AirTAC switches. Note that a standard cylinder drifts on air loss; for load holding, explore the SAIL lock or BSAI clamp-lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32AX45S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX45S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX45S |
| Bore size | Ø32 mm |
| Stroke | 45 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 SAI32AX45S 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 SAI32AX45S 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 SI32AX45S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 SI32AX45S Is Used
Material Diverting
Suitable for low-profile diverter arms on conveyors, where the 32mm bore and 20kg vertical lift capacity easily pivot light product flows.
Lab Automation
The SUS420J2 stainless rod option excels in clean or mildly corrosive laboratory environments, providing reliable 45mm strokes for sample handling.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX45S with the SAI32AX45S
To replace the SI32AX45S, order the SAI32AX45S. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the 32mm bore, 45mm stroke, G1/8 port, and the -S magnet requirement. The -A rod material specifies SUS420J2 stainless steel, which is crucial for corrosive environments. If you need more force, the neighbouring 40mm bore provides 628N push at 0.5MPa. For applications requiring load holding on air loss, a plain SAI cylinder will drift (the cushion only decelerates); instead, use the SAIL air-released lock, the BSAI clamp-lock, or an external pilot check valve. The SAIF variant with a built-in 4M valve is also available for 32mm bores.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX45S
- ✓ 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 SI32AX45S FAQ
Yes, the AirTAC SI32AX45S is discontinued. The direct replacement is the SAI32AX45S. It shares the same ISO 15552 mounting interface, 32mm bore, 45mm stroke, G1/8 port, and force, fitting existing fixtures perfectly.
The 32mm bore features a G1/8 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 SAI32AX45S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX45S replacement — usually within 7-8 hours.