This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAI32BX900S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAI32BX900S 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 SI32BX900S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX900S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 900mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX900S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke900 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX900S
About the Airtac SI32 Standard Air Cylinder SI32BX900S
The AirTAC SI32BX900S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore, 900 mm stroke, SUS304 stainless steel rod and a piston magnet. It delivers 402 N push and 345 N pull at 0.5 MPa. The exact drop-in replacement is the SAI32BX900S, which shares the same ISO 15552 mounting interface, G1/8 port, M10x1.25 rod thread and output force. The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces SAIL, SAIF and BSAI lock variants absent from the SI line.
For sizing, a safe working load is roughly 241 N (about 60% of the 402 N push force), translating to a 20 kg vertical lift with a 2:1 safety margin. The original SI-SKU used CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. If your process requires heat resistance, Viton H seals raise the operating range to 0-150 C. Note that a 900 mm stroke demands external guides to prevent rod bending under side loads.
Airtac SI32 Standard Air Cylinder SI32BX900S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX900S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX900S |
| Bore size | Ø32 mm |
| Stroke | 900 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 SAI32BX900S 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 SAI32BX900S 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 SI32BX900S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×900 | 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 SI32BX900S Is Used
Long-Reach Diversion
Pushes light packages across a conveyor lane at 900 mm stroke, utilizing the 241 N safe working load to slide items without stalling.
Corrosive Fluid Handling
Actuates a valve or gate in a washdown environment, relying on the SUS304 stainless rod to resist rust while shifting 20 kg vertical loads.
High-Bay Ejection
Extends 900 mm to eject bins from high storage racks, requiring external guides to prevent rod bending during the long extension.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX900S with the SAI32BX900S
To replace the SI32BX900S, order the SAI32BX900S and confirm the ISO 15552 mounting interface, 32 mm bore, 900 mm stroke, G1/8 port, M10x1.25 thread and the magnet for current AirTAC switches. If you need less force, a 25 mm bore offers lower output; for more force, a 40 mm bore provides 628 N push at 0.5 MPa. Because this is a 900 mm stroke, use external guides to prevent rod bending from side loads. A plain cylinder does not hold load without live air, as the cushion only decelerates; for load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX900S
- ✓ 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 SI32BX900S FAQ
Yes, the SI32BX900S is discontinued. The exact drop-in replacement is the SAI32BX900S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 900 mm stroke, G1/8 port and mounting interface.
The 32 mm bore delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
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