This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X35S, 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 SI32X35S
The AirTAC SI32 Standard Air Cylinder SI32X35S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 35mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X35S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke35 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X35S
- 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 SI32X35S
The AirTAC SI32X35S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 35 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X35S, a direct sharing the same interface, bore, stroke, force, port and mounting fixtures.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S suffix means this unit has a piston magnet for legacy CS1-B/DS1-B sensors, whereas the SAI uses current AirTAC switches. A plain cylinder drifts on air loss; for load holding explore the SAIL lock or BSAI clamp-lock variants.
Airtac SI32 Standard Air Cylinder SI32X35S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X35S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X35S |
| Bore size | Ø32 mm |
| Stroke | 35 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 SAI32X35S 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 SAI32X35S 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 SI32X35S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×35 | 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 SI32X35S Is Used
Small Part Clamping
Ideal for holding light machined components during secondary milling or drilling operations using the 402 N push force.
Ejector Mechanisms
Provides a compact 35 mm stroke to push finished small parts out of a die or fixture cleanly at high cycle rates.
Package Diverting
Suitable for actuating small diverting gates or stops on a 32 mm bore assembly line conveyor system.
Replacing the Airtac SI32 Standard Air Cylinder SI32X35S with the SAI32X35S
To replace the SI32X35S, order the SAI32X35S. Confirm the ISO 15552 mounting interface, the 32 mm bore, 35 mm stroke, G1/8 port (PT/G/NPT thread), and the -S magnet requirement. When sizing both ways, the 32 mm bore yields 402 N push at 0.5 MPa; dropping to a smaller bore loses force, while a larger 40 mm bore offers 628 N. Note that a standard cylinder does not hold load without live air—the cushion only decelerates. For holding needs, use an external rod lock, pilot check valve, or the SAIL/BSAI variants. The SAI family also adds the SAIF self-valve option for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X35S
- ✓ 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 SI32X35S FAQ
Yes, the SI32X35S is discontinued. The direct replacement is the AirTAC SAI32X35S. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 35 mm stroke, G1/8 port, output force, and mounting interface.
This 32 mm bore double-acting cylinder uses a G1/8 air port. It generates 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 force of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32X35S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X35S replacement — usually within 7-8 hours.