This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX35S, 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 SI32AX35S
The AirTAC SI32 Standard Air Cylinder SI32AX35S 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 SAI32AX35S, 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 → SAI32AX35S
- 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 SI32AX35S
The AirTAC SI32AX35S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 35mm stroke, and an SUS420J2 stainless steel rod. Delivering 402N push at 0.5MPa, its direct replacement is the SAI32AX35S. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure, and the family adds SAIL, SAIF, and BSAI variants the SI lacked.
This legacy unit has a G1/8 port, M10x1.25 rod thread, 27mm cushions, and a piston magnet for CS1-B/DS1-B switches. The SAI replacement uses current AirTAC switches. Note that plain cylinders drift on air loss; cushions only decelerate. For load holding, use an external rod lock or pilot check valve. Viton H seals raise temps to 0-150C.
Airtac SI32 Standard Air Cylinder SI32AX35S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX35S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX35S |
| 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 SAI32AX35S 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 SAI32AX35S 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 SI32AX35S
| 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 SI32AX35S Is Used
Compact Ejection
Ideal for short-stroke part ejection in machining centers where the 35mm stroke and 402N force at 0.5MPa reliably clear small components from fixtures.
Corrosive Sorting
The SUS420J2 stainless rod option suits light-duty sorting gates in washdown environments, providing stable actuation without rod corrosion.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX35S with the SAI32AX35S
To replace the SI32AX35S, order the SAI32AX35S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 35mm stroke, G1/8 port, M10x1.25 thread, and mounting. Retain the -S magnet for sensing and the -A SUS420J2 rod for corrosion resistance. If you need more force, the neighboring 40mm bore yields 628N push at 0.5MPa; if less is acceptable, drop to a smaller series. For load holding on air loss, remember the cushion only decelerates; add an external pilot check valve or use the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX35S
- ✓ 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 SI32AX35S FAQ
Yes, the AirTAC SI32AX35S is discontinued. The direct replacement is the SAI32AX35S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 35mm stroke, 402N force, G1/8 port, and mounting interface.
This 32mm bore cylinder has a G1/8 port. It delivers 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. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX35S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX35S replacement — usually within 7-8 hours.