This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX290S, 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 SI32AX290S
The AirTAC SI32 Standard Air Cylinder SI32AX290S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 290mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX290S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke290 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX290S
- 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 SI32AX290S
The AirTAC SI32AX290S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 290 mm stroke. It delivered 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32AX290S, a direct alternative retaining the exact mounting interface, bore, stroke, output force, and port size.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. This specific SI32AX290S includes the SUS420J2 stainless steel rod (-A) and a piston magnet (-S) for legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32AX290S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX290S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX290S |
| Bore size | Ø32 mm |
| Stroke | 290 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 SAI32AX290S 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 SAI32AX290S 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 SI32AX290S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×290 | 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 SI32AX290S Is Used
Small Part Ejection
Ideal for pushing lightweight completed parts out of a machining fixture using its 402 N push force and 290 mm travel.
Package Diverting
Deploys a 290 mm stroke to divert small cartons on a packaging line, with the SUS420J2 rod resisting moisture.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX290S with the SAI32AX290S
To replace the SI32AX290S, order the SAI32AX290S. Confirm the ISO 15552 mounting interface, 32 mm bore, 290 mm stroke, G1/8 port (PT/G/NPT thread options), and your specific mounting accessory. The -S magnet enables position sensing (legacy CS1-B/DS1-B switches; the SAI uses current AirTAC switches), while the -A denotes the SUS420J2 stainless rod. For sizing both ways: a 40 mm bore yields 628 N push at 0.5 MPa, or dropping pressure to 0.3 MPa yields roughly 241 N. Because stroke is 290 mm, ensure adequate guidance to prevent rod bending and side-load wear. A plain cylinder does not hold load without live air; the cushion only decelerates. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX290S
- ✓ 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 SI32AX290S FAQ
Yes, the SI32AX290S is discontinued. The direct replacement is the SAI32AX290S. It shares the identical ISO 15552 mounting interface, 32 mm bore, 290 mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
This 32 mm bore cylinder uses a G1/8 port. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and 724 N push at 0.9 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX290S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX290S replacement — usually within 7-8 hours.