This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAI32BX320S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAI32BX320S 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 SI32BX320S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX320S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 320mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX320S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke320 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX320S
About the Airtac SI32 Standard Air Cylinder SI32BX320S
The AirTAC SI32BX320S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 320mm stroke, SUS304 stainless steel rod, and a piston magnet. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32BX320S. This drop-in upgrade shares the exact same ISO 15552 mounting interface, bore, stroke, force, and G1/8 port.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For your 320mm stroke, expect a safe working load around 241N (60% of the 0.5MPa push) or 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 SI32BX320S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX320S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX320S |
| Bore size | Ø32 mm |
| Stroke | 320 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 SAI32BX320S 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 SAI32BX320S 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 SI32BX320S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×320 | 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 SI32BX320S Is Used
Lab Automation
Ideal for compact 32mm bore testing jigs needing 402N push over a 320mm travel, where the SUS304 rod resists moisture.
Package Diverting
Provides 241N safe working load to push light cartons on a 320mm stroke, dropping into existing ISO 15552 fixtures.
Small Part Ejection
Ejects molded parts with a 20kg vertical lift capacity, relying on adjustable 27mm cushions for smooth end-of-stroke stops.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX320S with the SAI32BX320S
To replace the SI32BX320S, order the SAI32BX320S. Confirm the ISO 15552 mounting interface, the M10x1.25 rod thread, the G1/8 port, and the -S magnet for legacy CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). Sizing both ways: a 40mm bore gives 628N push at 0.5MPa, while dropping to a 25mm bore reduces force. Note that a 320mm stroke on a 12mm rod requires external guides to prevent rod bending under side loads. For load holding on air loss, the cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX320S
- ✓ 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 SI32BX320S FAQ
Yes, the AirTAC SI32BX320S is discontinued. The exact drop-in replacement is the SAI32BX320S. It is dimensionally interchangeable per ISO 15552, keeping the same 32mm bore, 320mm stroke, force, G1/8 port, and mounting.
It features a G1/8 port and provides 402N push / 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
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