This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAI32BX400S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAI32BX400S 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 SI32BX400S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX400S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 400mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX400S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke400 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX400S
About the Airtac SI32 Standard Air Cylinder SI32BX400S
The AirTAC SI32BX400S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 400mm stroke, SUS304 stainless rod, and a piston magnet. It delivers 402N push force at 0.5MPa via a G1/8 port. The exact drop-in replacement is the SAI32BX400S, sharing the same interface, force, and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For your planning, the safe working load is roughly 241N (60% of the 402N figure), equating to a 20kg vertical lift with a 2:1 margin. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32BX400S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX400S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX400S |
| Bore size | Ø32 mm |
| Stroke | 400 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 SAI32BX400S 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 SAI32BX400S 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 SI32BX400S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SI32BX400S Is Used
Stainless Rod Actuation
Ideal for light-duty machinery requiring the SUS304 corrosion-resistant rod option for washdown or humid environments.
400mm Stroke Diverting
Provides the extended 400mm reach needed to push small product packages between conveyor lanes.
Low Force Positioning
Suitable for lab automation where 402N push at 0.5MPa is sufficient to move testing samples.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX400S with the SAI32BX400S
To replace the SI32BX400S, order the SAI32BX400S. Confirm the ISO 15552 mounting interface, 32mm bore, 400mm stroke, G1/8 port, and mounting accessory. Your -B rod is SUS304 stainless and the -S magnet works with legacy CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). For sizing, a 40mm bore yields 628N push at 0.5MPa, while dropping to 25mm stroke reduces rod bending. At 400mm, add external guides to prevent side-load wear. For load holding on air loss, use an external rod lock or pilot check valve, as cushions only decelerate; alternatively, specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX400S
- ✓ 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 SI32BX400S FAQ
Yes, the SI32BX400S is discontinued. The exact drop-in replacement is the SAI32BX400S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 400mm stroke, G1/8 port, and mounting interface.
The G1/8 port bore delivers 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
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