This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX270S, 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 SI32AX270S
The AirTAC SI32 Standard Air Cylinder SI32AX270S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 270mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX270S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke270 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX270S
- 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 SI32AX270S
The AirTAC SI32AX270S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 270mm stroke, SUS420J2 stainless rod, and G1/8 port. Delivering 402N push at 0.5MPa, it is replaced by the SAI32AX270S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force, and port, fitting existing fixtures perfectly.
The SAI upgrade features an improved piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The original SI-S magnet supports CS1-B/DS1-B sensors, while the SAI family also adds SAIL lock, SAIF valve, and BSAI clamp variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32AX270S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX270S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX270S |
| Bore size | Ø32 mm |
| Stroke | 270 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 SAI32AX270S 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 SAI32AX270S 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 SI32AX270S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×270 | 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 SI32AX270S Is Used
Small Parts Ejection
Ideal for pushing lightweight machined components out of a fixture using a reliable 402N push force at 0.5MPa.
Package Diverting
Actuates a routing gate on a packaging line, where the 270mm stroke and SUS420J2 stainless rod resist moisture.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX270S with the SAI32AX270S
To replace the SI32AX270S, order the SAI32AX270S. Confirm the ISO 15552 mounting interface, the 32mm bore, 270mm stroke, G1/8 port (PT/G/NPT thread options), the SUS420J2 stainless rod (-A), and the -S magnet for current AirTAC switches. Sizing both ways: a neighbouring 40mm bore offers 628N push at 0.5MPa, while a 25mm stroke reduces rod-bending risk. At 270mm, add a guide to prevent side-load wear. A plain cylinder drifts on air loss (cushions only decelerate), so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX270S
- ✓ 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 SI32AX270S FAQ
Yes, the SI32AX270S is discontinued. The direct replacement is the SAI32AX270S. It shares the identical ISO 15552 mounting interface, 32mm bore, 270mm stroke, output force, and G1/8 port, fitting existing fixtures without modification.
This 32mm bore cylinder has a G1/8 air port and M10x1.25 rod thread. Force output is 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 SAI32AX270S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX270S replacement — usually within 7-8 hours.