This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX225, 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 SI32AX225
The AirTAC SI32 Standard Air Cylinder SI32AX225 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 direct replacement is the SAI32AX225, 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 → SAI32AX225
- 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 SI32AX225
The AirTAC SI32AX225 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 225mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced it with the SAI32AX225, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
This SKU features a SUS420J2 stainless piston rod but lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor. The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure. Note that plain cylinders drift without air; use a pilot check valve or SAIL lock variant for holding.
Airtac SI32 Standard Air Cylinder SI32AX225 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX225 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX225 |
| 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 SAI32AX225 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 SAI32AX225 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32AX225
| 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 SI32AX225 Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of a fixture using the 402N push force at 0.5 MPa.
Lab Test Actuators
Drives repetitive push/pull test cycles, benefiting from the SUS420J2 stainless rod for moisture resistance.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX225 with the SAI32AX225
To replace the SI32AX225, order the SAI32AX225, confirming the ISO 15552 mounting interface, 32mm bore, 225mm stroke, G1/8 port, and SUS420J2 rod. Because this SKU lacks the -S magnet, it cannot support position sensing; add the magnet if switches are needed. At 0.5MPa, the 32mm bore yields 402N push and 345N pull. If undersized, the neighbouring 40mm bore provides 628N push; if oversized, the SAI family offers lock (SAIL) and built-in valve (SAIF) variants. Since the 225mm stroke exceeds 300mm? No, but for any stroke over 300mm, ensure guide support to prevent rod bending. Remember, the air cushion only decelerates; it does not hold the load on air loss, so use an external rod lock for vertical safety.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX225
- ✓ 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 SI32AX225 FAQ
Yes, the AirTAC SI32AX225 is discontinued. The direct replacement is the SAI32AX225. It shares the identical ISO 15552 mounting interface, 32mm bore, 225mm stroke, G1/8 port, and force ratings, fitting existing fixtures perfectly.
The 32mm bore uses a G1/8 port. At 0.5 MPa it provides 402N push and 345N pull. At 0.7 MPa push is 563N, and at 0.9 MPa it is 724N. The theoretical maximum force is 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX225
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX225 replacement — usually within 7-8 hours.