This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAI32BX450S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAI32BX450S 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 SI32BX450S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX450S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 450mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX450S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX450S
About the Airtac SI32 Standard Air Cylinder SI32BX450S
The AirTAC SI32BX450S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore, 450 mm stroke, SUS304 stainless steel rod, and a built-in magnet for CS1-B/DS1-B switches. It delivers 402 N push at 0.5 MPa via a G1/8 port. The drop-in replacement is the SAI32BX450S, retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For sizing, the safe working load is roughly 241 N (about 60% of the 402 N push), yielding a 20 kg vertical lift with a 2:1 margin. If you need held loads, the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32BX450S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX450S |
| Bore size | Ø32 mm |
| Stroke | 450 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 SAI32BX450S 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 SAI32BX450S 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 SI32BX450S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SI32BX450S Is Used
Light-Part Diversion
Pushes small packages on a 32 mm bore line using 402 N at 0.5 MPa, with the 450 mm stroke reaching across a narrow conveyor belt.
Lab Equipment Actuation
Ideal for chemical or washdown settings due to the SUS304 stainless rod, driving lightweight doors over a 450 mm travel distance.
Small Tray Handling
Extends 450 mm to index small component trays, safely lifting up to 20 kg vertically with a 2:1 safety margin.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX450S with the SAI32BX450S
To replace the SI32BX450S, order the SAI32BX450S. Verify your ISO 15552 mounting interface, 32 mm bore, 450 mm stroke, G1/8 port (PT/G/NPT), and the -S magnet for current AirTAC switches. The -B rod is SUS304 stainless steel, offering corrosion resistance over standard carbon steel. For sizing, 402 N push at 0.5 MPa gives a 20 kg vertical lift with a 2:1 margin; if you need more force, the 40 mm bore yields 628 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. At 450 mm, prevent rod bending with an external guide to avoid side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX450S
- ✓ 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 SI32BX450S FAQ
Yes, the SI32BX450S is discontinued. The exact drop-in replacement is the SAI32BX450S. It is dimensionally interchangeable per ISO 15552, keeping the same 32 mm bore, 450 mm stroke, 402 N force, G1/8 port, and mounting fixtures.
The 32 mm bore uses a G1/8 port. Force ratings are: 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
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