This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X325S, 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 SI32X325S
The AirTAC SI32 Standard Air Cylinder SI32X325S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 325mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X325S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke325 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X325S
- 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 SI32X325S
The AirTAC SI32X325S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 325mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the direct replacement SAI32X325S. This successor shares identical mounting, bore, stroke, output and port dimensions for a direct fixture swap.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also introduces SAIL, SAIF and BSAI variants absent from the SI line. The -S magnet works with legacy CS1-B/DS1-B switches, while Viton H seals raise heat limits to 150C.
Airtac SI32 Standard Air Cylinder SI32X325S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X325S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X325S |
| Bore size | Ø32 mm |
| Stroke | 325 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 SAI32X325S 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 SAI32X325S 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 SI32X325S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×325 | 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 SI32X325S Is Used
Component Ejection
Ideal for pushing light machined parts out of CNC fixtures using the 402N output, with the 325mm stroke clearing the work envelope entirely.
Package Diverting
Suitable for actuating lightweight routing gates on packaging lines where a 20kg vertical lift capacity and extended reach are required.
Small Sortation
Deploys sorting paddles or deflector arms in distribution hubs, utilizing the compact 32mm bore to fit within tight conveyor frame clearances.
Replacing the Airtac SI32 Standard Air Cylinder SI32X325S with the SAI32X325S
To replace the SI32X325S, order the SAI32X325S, confirming the ISO 15552 mounting interface, G1/8 port, M10x1.25 rod thread and magnet. For higher force, the 40mm bore yields 628N push at 0.5MPa; for smaller footprints, the 32mm is optimal. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify an SAIL lock variant. The 325mm stroke requires external guides to prevent rod bending under side loads. Rod materials include carbon steel, SUS420J2 or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X325S
- ✓ 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 SI32X325S FAQ
Yes, the SI32X325S is discontinued. The direct replacement is the SAI32X325S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 325mm stroke, 402N force, G1/8 port and mounting interface to fit existing fixtures.
This double-acting cylinder features a G1/8 air port and provides 402N push / 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical maximum of 82kgf at 1.0MPa. It operates at 30-800mm/s with a 27mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X325S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X325S replacement — usually within 7-8 hours.