This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX50SN, 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 SI32AX50SN
The AirTAC SI32 Standard Air Cylinder SI32AX50SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 50mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX50SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX50SN
- 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 SI32AX50SN
The AirTAC SI32AX50SN is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 50mm stroke. Delivering 402N push at 0.5MPa via a G1/8 port, its direct replacement is the SAI32AX50SN, matching the exact mounting interface, force, and dimensions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This unit includes a SUS420J2 stainless rod (-A) and NBR seals (-N) for -20 to +70C. With the magnet (-S) fitted, it accepts legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32AX50SN Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX50SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX50SN |
| Bore size | Ø32 mm |
| Stroke | 50 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 SAI32AX50SN 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 SAI32AX50SN 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 SI32AX50SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 SI32AX50SN Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of an automated lathe using a compact 50mm stroke and 402N force.
Material Sorting
Actuates diverter gates on a conveyor belt to route small plastic or metal parts rapidly at speeds up to 800mm/s.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX50SN with the SAI32AX50SN
To replace the SI32AX50SN, order the SAI32AX50SN. Confirm the ISO 15552 interface, 32mm bore, 50mm stroke, G1/8 port, and mounting accessory. The -S magnet enables current AirTAC switches, while the -A rod provides SUS420J2 stainless steel. At 0.5MPa it yields 402N push and 345N pull; if undersized, the neighbouring 40mm bore gives 628N push. The cushion only decelerates; it does not hold load on air loss. For locked loads, use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX50SN
- ✓ 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 SI32AX50SN FAQ
Yes, the SI32AX50SN is discontinued. The direct replacement is the SAI32AX50SN. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 50mm stroke, G1/8 port, and mounting interface.
It uses a G1/8 air port. The force ratings are: 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX50SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX50SN replacement — usually within 7-8 hours.