This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX225, 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 SI32BX225
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX225 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 225mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX225, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke225 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX225
- 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 SI32BX225
The AirTAC SI32BX225 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore, 225 mm stroke, and a SUS304 stainless steel rod. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32BX225. This drop-in upgrade matches the original G1/8 port, M10x1.25 thread, and ISO 15552 mounting interface.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. With no -S suffix, this SKU cannot take a sensor. For 225 mm strokes, safe working load is ~241 N (vertical lift ~20 kg). Because 225 mm exceeds the 1000 mm standard limit, this is a nonstandard stroke.
Airtac SI32 Standard Air Cylinder SI32BX225 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX225 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX225 |
| Bore size | Ø32 mm |
| Stroke | 225 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 SAI32BX225 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 SAI32BX225 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 SI32BX225
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×225 | 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 SI32BX225 Is Used
Lab Automation
Drives compact sample handlers using the SUS304 rod for corrosion resistance, providing 402 N push at 0.5 MPa.
Small Part Ejection
Executes 225 mm ejection strokes in tight machinery, safely moving loads under the 241 N working guideline.
Light Clamping
Applies up to 82 kgf max clamping force at 1.0 MPa for delicate fixture operations without needing a magnet.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX225 with the SAI32BX225
To replace the SI32BX225, order the SAI32BX225. Verify the ISO 15552 mounting, 32 mm bore, 225 mm stroke, G1/8 port, and SUS304 rod. The SAI family adds SAIL, SAIF, and BSAI variants. This non-magnet SKU cannot use CS1-B/DS1-B sensors. For loads needing holding, use an external rod lock, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX225
- ✓ 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 SI32BX225 FAQ
Yes, the SI32BX225 is discontinued. The exact drop-in replacement is the SAI32BX225, which shares the same ISO 15552 mounting interface, 32 mm bore, 225 mm stroke, and G1/8 port.
It features a G1/8 port and M10x1.25 thread. Force ratings are 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a maximum theoretical force of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX225
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX225 replacement — usually within 7-8 hours.