This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX75, 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 SI32BX75
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX75 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 SAI32BX75, 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 → SAI32BX75
- 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 SI32BX75
The AirTAC SI32BX75 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 75mm stroke. It delivers 402N push and 345N pull at 0.5MPa via a G1/8 port. As this legacy unit is end-of-life, order the SAI32BX75 drop-in replacement. It shares the exact ISO 15552 mounting interface, bore, output force, and port size, dropping straight into existing fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet (-S), so it cannot take a CS1-B/DS1-B sensor. It uses a SUS304 stainless rod (B option) instead of carbon steel. For sizing, the safe working load is ~241N (60% of 402N), yielding a ~20kg vertical lift with a 2:1 margin. Note that plain cylinders drift without air; use an external rod lock or SAIL/BSAI variant for load holding.
Airtac SI32 Standard Air Cylinder SI32BX75 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX75 |
| 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 SAI32BX75 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 SAI32BX75 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 SI32BX75
| 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 SI32BX75 Is Used
Small Part Clamping
Ideal for holding light machined components during drilling or milling, utilizing the 402N push force at 0.5MPa with the SUS304 rod.
Ejector Mechanisms
Provides reliable 75mm ejection strokes for small parts in automated assembly lines, operating at speeds between 30-800mm/s.
Material Diverting
Suitable for actuating lightweight diverter gates on conveyor systems where a compact 32mm ISO 15552 footprint is required.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX75 with the SAI32BX75
To replace the SI32BX75, order the SAI32BX75. Confirm the ISO 15552 mounting interface, 32mm bore, 75mm stroke, G1/8 port (PT/G/NPT thread), and your mounting accessory (LB, FA, TC, etc.). Because this is a no-S SKU, it cannot accept a magnetic switch—if sensing is needed, select an SAI32BX75S. For sizing down or up, a 40mm bore offers 628N push at 0.5MPa, while this 32mm bore provides 402N. The cushion only decelerates the load near stroke end; it does not hold position. For drop prevention on air loss, use a pilot-operated check valve, an external rod lock, or the SAIL/BSAI lock variant. The SAIF variant adds a built-in 4M valve for compact setups.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX75
- ✓ 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 SI32BX75 FAQ
Yes, the AirTAC SI32BX75 is discontinued. The exact drop-in replacement is the SAI32BX75. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 75mm stroke, G1/8 port, and mounting interface.
This double-acting cylinder has a G1/8 port. It generates 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. Speed is 30-800mm/s.
Request a Quote for the SAI32BX75
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX75 replacement — usually within 7-8 hours.