This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX75S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SI32BX75S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 75mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke75 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX75S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI32 Standard Air Cylinder SI32BX75S
The AirTAC SI32BX75S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 75mm stroke, and a SUS304 stainless steel rod. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32BX75S. This drop-in upgrade matches the G1/8 port, M10x1.25 thread, and mounting interface exactly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. For your 402N output, the safe working load is roughly 241N, and vertical lift capacity is about 20kg with a 2:1 margin. The SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32BX75S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX75S |
| Bore size | Ø32 mm |
| Stroke | 75 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 SAI32BX75S 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 SAI32BX75S 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 SI32BX75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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 SI32BX75S Is Used
Small Part Ejection
Ideal for pushing lightweight plastic or aluminium components out of machining fixtures using its 402N thrust.
Corrosive Environment Actuation
The SUS304 stainless rod option excels in food packaging or chemical handling tasks requiring repeatable 75mm movements.
Package Diverting
Provides reliable stroke actuation for sorting small cartons on a conveyor line without overwhelming the mechanism.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX75S with the SAI32BX75S
To replace the SI32BX75S, order the SAI32BX75S. Verify the ISO 15552 mounting interface, 32mm bore, 75mm stroke, G1/8 port, and magnet. The -B rod is SUS304 stainless steel for corrosion resistance. If you need more force, the adjacent 40mm bore yields 628N push at 0.5MPa. For load holding, note that a plain cylinder drifts on air loss; use an external pilot check valve or the SAIL lock variant. The built-in magnet supports CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX75S
- ✓ 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 SI32BX75S FAQ
Yes, the SI32BX75S is discontinued. The exact drop-in replacement is the SAI32BX75S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 75mm stroke, 402N force, G1/8 port, and mounting interface.
The 32mm bore uses a G1/8 port. At 0.5MPa it provides 402N push and 345N pull force. At 0.7MPa push is 563N, and at 0.9MPa push is 724N. The theoretical maximum force is 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX75S replacement — usually within 7-8 hours.