This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X520S, 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 SI32X520S
The AirTAC SI32 Standard Air Cylinder SI32X520S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 520mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X520S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke520 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X520S
- 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 SI32X520S
The AirTAC SI32X520S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 520mm stroke, and a G1/8 port. Delivering 402N push force at 0.5MPa, it is directly replaced by the SAI32X520S. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, and output force, fitting existing fixtures perfectly.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. The -S magnet supports legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X520S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X520S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X520S |
| Bore size | Ø32 mm |
| Stroke | 520 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 SAI32X520S 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 SAI32X520S 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 SI32X520S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×520 | 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 SI32X520S Is Used
Small Part Ejection
Provides reliable 402N push force to eject machined small parts from an assembly fixture.
Gate Actuation
Cycles 520mm to open and close light access gates on automated material handling lines.
Replacing the Airtac SI32 Standard Air Cylinder SI32X520S with the SAI32X520S
To replace this SI32X520S with the SAI32X520S, verify the ISO 15552 mounting interface, 32mm bore, 520mm stroke, G1/8 port, and mounting accessory. The -S magnet allows CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. Sizing both ways: neighbouring bores offer more force (563N at 0.7MPa here), while smaller bores save space. A plain cylinder drifts on air loss as the cushion only decelerates; use an external rod lock or pilot check valve for load holding, or specify an SAIL/BSAI lock variant. For the 520mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X520S
- ✓ 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 SI32X520S FAQ
Yes, the SI32X520S is discontinued. The direct replacement is the SAI32X520S, which shares the same ISO 15552 mounting interface, 32mm bore, 520mm stroke, force, and G1/8 port.
The 32mm bore uses a G1/8 port. It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X520S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X520S replacement — usually within 7-8 hours.