This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X300S, 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 SI32X300S
The AirTAC SI32 Standard Air Cylinder SI32X300S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 300mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X300S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X300S
- 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 SI32X300S
The AirTAC SI32X300S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 300 mm stroke. It delivers 402 N push force at 0.5 MPa and uses a G1/8 port. AirTAC replaced this legacy unit with the SAI32X300S, a direct sharing the same interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S suffix means a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X300S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X300S |
| Bore size | Ø32 mm |
| Stroke | 300 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 SAI32X300S 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 SAI32X300S 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 SI32X300S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 SI32X300S Is Used
Compact Part Ejection
Uses the 402 N push force at 0.5 MPa to eject small machined components from a fixture over the 300 mm travel distance.
Light Package Diverting
Actuates a diverting gate on a packaging line, where the 20 kg vertical lift capacity handles lightweight product routing reliably.
Small Tray Sorting
Pushes sorted inventory trays between conveyor lanes, benefiting from the adjustable 27 mm air cushions at both ends for smooth stops.
Replacing the Airtac SI32 Standard Air Cylinder SI32X300S with the SAI32X300S
To replace the SI32X300S, order the SAI32X300S. Verify the ISO 15552 mounting interface, 300 mm stroke, G1/8 port, and your mounting accessory. The -S magnet allows CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). For sizing, a 32 mm bore gives 402 N push at 0.5 MPa; dropping to a 25 mm bore loses thrust, while a 40 mm bore yields 628 N. At 300 mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X300S
- ✓ 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 SI32X300S FAQ
Yes, the SI32X300S is discontinued. The direct replacement is the SAI32X300S. It shares the identical ISO 15552 mounting interface, 32 mm bore, 300 mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
The 32 mm bore provides 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 max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s. It features a 12 mm rod, M10x1.25 thread, and 27 mm cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X300S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X300S replacement — usually within 7-8 hours.