This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX375S, 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 SI32AX375S
The AirTAC SI32 Standard Air Cylinder SI32AX375S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 375mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX375S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke375 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX375S
- 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 SI32AX375S
The AirTAC SI32AX375S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 375 mm stroke. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32AX375S. This direct successor shares the exact ISO 15552 mounting interface, G1/8 port, and M10x1.25 rod thread. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI replacement uses current AirTAC switches. The -A suffix indicates a SUS420J2 stainless steel rod for corrosion resistance. Note that plain cylinders drift without live air; use a pilot check valve or the SAIL lock variant to hold loads.
Airtac SI32 Standard Air Cylinder SI32AX375S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX375S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX375S |
| Bore size | Ø32 mm |
| Stroke | 375 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 SAI32AX375S 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 SAI32AX375S 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 SI32AX375S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×375 | 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 SI32AX375S Is Used
Small Parts Ejection
Ideal for pushing lightweight completed parts out of a machining fixture using a compact 32 mm bore and 375 mm reach.
Package Diverting
Deploys a 375 mm stroke to sort or divert small cartons on a conveyor line, providing 402 N of push force at 0.5 MPa.
Lightweight Pallet Stops
Acts as a pneumatic stop for low-weight pallets, where the SUS420J2 stainless rod offers resistance against humidity.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX375S with the SAI32AX375S
To replace the SI32AX375S, order the SAI32AX375S, confirming the ISO 15552 mounting interface, 32 mm bore, 375 mm stroke, G1/8 port, and -S magnet. If downsizing, a 20 mm bore offers less force; if upsizing, a 40 mm bore yields 628 N push at 0.5 MPa. Because this is a 375 mm stroke, add external guides to prevent rod bending and side-load wear. The air cushion (27 mm) only decelerates the piston; it does not hold the load. For secure load holding on air loss, specify the SAIL air-released lock or BSAI clamp-lock variant, or use an external pilot check valve. The SAIF variant (bores 32-100) integrates a 4M valve if space is tight.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX375S
- ✓ 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 SI32AX375S FAQ
Yes, the SI32AX375S is discontinued. The direct replacement is the SAI32AX375S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 375 mm stroke, G1/8 port, and mounting fixtures, but features an upgraded two Y-shaped element piston seal.
The G1/8 port is fixed by the 32 mm bore. Force ratings are: 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 maximum of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX375S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX375S replacement — usually within 7-8 hours.