This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAI32BX540S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAI32BX540S in place of this model. 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 SI32BX540S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX540S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 540mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX540S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke540 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX540S
About the Airtac SI32 Standard Air Cylinder SI32BX540S
The AirTAC SI32BX540S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 540mm stroke, and SUS304 stainless steel rod. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32BX540S. This drop-in upgrade shares the exact ISO 15552 mounting interface, bore, and stroke.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. A computed buyer insight: safe working load is ~241N (60% of 402N), lifting ~20kg vertically with a 2:1 margin. This -S model has a magnet for CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants.
Airtac SI32 Standard Air Cylinder SI32BX540S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX540S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX540S |
| Bore size | Ø32 mm |
| Stroke | 540 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 SAI32BX540S 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 SAI32BX540S 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 SI32BX540S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×540 | 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 SI32BX540S Is Used
Corrosion-Resistant Diverting
The SUS304 rod excels in washdown diverter gates, pushing light 20kg packages over 540mm without rusting.
Long-Stroke Product Reject
Cycles at 30-800mm/s to knock faulty items off a line, using the 540mm extension to clear wide belts.
Lab Sample Positioning
Moves sample trays along the 540mm path where the non-magnetic stainless rod prevents contamination.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX540S with the SAI32BX540S
To replace the SI32BX540S, order the SAI32BX540S. Confirm the ISO 15552 mounting fixture, 540mm stroke, G1/8 port, and -S magnet. The -B rod is SUS304 stainless steel. For sizing, a 32mm bore yields 402N push at 0.5MPa; a 40mm bore gives 628N. A 540mm stroke requires external guides to prevent rod bending and side-load wear. The cushion only decelerates; it does not hold load on air loss. For held loads, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX540S
- ✓ 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 SI32BX540S FAQ
Yes, the SI32BX540S is discontinued. The exact drop-in replacement is the SAI32BX540S. It shares the same ISO 15552 mounting interface, 32mm bore, 540mm stroke, G1/8 port, and output force, fitting existing fixtures perfectly.
It has a G1/8 port. Force ratings are: 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. The cushion travel is 27mm.
Related AirTAC SAI Cylinders
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