This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX280, 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 SI32BX280
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX280 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 SAI32BX280, 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 → SAI32BX280
- 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 SI32BX280
The AirTAC SI32BX280 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 280mm stroke, and SUS304 stainless steel rod. It delivers 402N push force at 0.5MPa via a G1/8 port. The exact drop-in replacement is the SAI32BX280, matching the interface, bore, stroke, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet, so it cannot take a sensor. Safe working load is about 241N (roughly 60% of the 402N push force), equating to a 20kg vertical lift with a 2:1 margin.
Airtac SI32 Standard Air Cylinder SI32BX280 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX280 |
| 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 SAI32BX280 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 SAI32BX280 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 SI32BX280
| 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 SI32BX280 Is Used
Stainless Rod Actuation
Ideal for light-duty machinery requiring the SUS304 corrosion-resistant rod option for pushing tasks up to 402N.
Compact Package Sorting
Provides 280mm travel for diverting small parcels in distribution hubs where a 20kg vertical lift margin is sufficient.
Fixture Clamping
Clamps small aluminum parts in machining cells, relying on the 32mm bore's 345N pull force at 0.5MPa.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX280 with the SAI32BX280
To replace this SI32BX280, order the SAI32BX280. Confirm the ISO 15552 mounting interface, 32mm bore, 280mm stroke, G1/8 port, and SUS304 rod. Since there is no -S magnet, position sensing is impossible on this SKU. For sizing, a 40mm bore gives 628N push at 0.5MPa, while dropping to a 25mm bore reduces force. At 280mm stroke, use a guide to prevent rod bending and side loads. The air cushion only decelerates; it does not hold load. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX280
- ✓ 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 SI32BX280 FAQ
Yes, the SI32BX280 is discontinued. The exact drop-in replacement is the SAI32BX280. It features the same ISO 15552 mounting interface, 32mm bore, 280mm stroke, output force, G1/8 port, and SUS304 rod material, fitting directly into existing fixtures.
The 32mm bore uses a G1/8 port. It generates 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 SAI32BX280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX280 replacement — usually within 7-8 hours.