This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX280S, 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 SI32BX280S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX280S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 280mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX280S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke280 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX280S
- 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 SI32BX280S
The AirTAC SI32BX280S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 280mm stroke, and a SUS304 stainless steel rod. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32BX280S. This drop-in successor matches the exact bore, stroke, force, and ISO 15552 mounting interface to fit existing fixtures.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. For this bore, safe working load is roughly 241N (60% of 402N) with a vertical lift capacity around 20kg at a 2:1 margin. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This -S model retains a piston magnet for CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32BX280S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX280S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX280S |
| Bore size | Ø32 mm |
| Stroke | 280 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 SAI32BX280S 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 SAI32BX280S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX280S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×280 | 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 SI32BX280S Is Used
Small Parts Ejection
Uses the 402N push force and 280mm stroke to push light machined components out of a fixture cleanly.
Package Diverting
Extends across a belt line to deflect small cartons, relying on the SUS304 rod for washdown corrosion resistance.
Compact Material Handling
Moves lightweight bins between zones where the 32mm ISO 15552 footprint and 20kg vertical lift margin are ideal.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX280S with the SAI32BX280S
To replace the SI32BX280S, order the SAI32BX280S ensuring the ISO 15552 mounting interface, 32mm bore, 280mm stroke, G1/8 port, and SUS304 rod are retained. At 0.5MPa it yields 402N push and 345N pull; if undersized, the neighboring 40mm bore provides 628N push. For the 280mm stroke, use a guide to prevent rod bending and side loads. A plain cylinder drifts on air loss; for load holding use an external pilot check valve or the SAIL/BSAI lock variants. The -S magnet works with legacy CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX280S
- ✓ 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 SI32BX280S FAQ
Yes, the SI32BX280S is discontinued. The exact drop-in replacement is the SAI32BX280S, which shares the identical ISO 15552 mounting interface, 32mm bore, 280mm stroke, G1/8 port, and output force.
It uses a G1/8 air port. The force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX280S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX280S replacement — usually within 7-8 hours.