This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX25, 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 SI32AX25
The AirTAC SI32 Standard Air Cylinder SI32AX25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 25mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX25
- 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 SI32AX25
The AirTAC SI32AX25 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 25 mm stroke. It delivers 402 N push force at 0.5 MPa, features a G1/8 port, and uses an M10x1.25 rod thread. Because this legacy unit is end-of-life, you should order the direct replacement: the SAI32AX25. It shares the identical ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting existing fixtures perfectly.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. This specific SKU lacks a magnet (-S), so it cannot accept a CS1-B/DS1-B sensor. The -A suffix denotes a SUS420J2 stainless steel piston rod for corrosion resistance.
Airtac SI32 Standard Air Cylinder SI32AX25 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX25 |
| Bore size | Ø32 mm |
| Stroke | 25 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 SAI32AX25 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 SAI32AX25 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 SI32AX25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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 SI32AX25 Is Used
Compact Clamping
Ideal for securing small machined components during milling, providing precise 402 N hold at 0.5 MPa within tight fixture clearances.
Ejector Mechanisms
Short 25 mm stroke rapidly ejects lightweight plastic parts from injection molds without requiring excessive mounting depth.
Small Part Diverting
Provides reliable lateral movement on conveyor lines for routing small electronic packages using the SUS420J2 corrosion-resistant rod.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX25 with the SAI32AX25
To replace the SI32AX25, order the SAI32AX25, confirming the ISO 15552 interface, 32 mm bore, 25 mm stroke, G1/8 port, and SUS420J2 rod. This non-magnetic SKU cannot support switches; if sensing is needed, select an SAI32X25S. Sizing both ways: this bore yields 402 N push at 0.5 MPa, whereas the neighboring 40 mm bore provides 628 N. Note that a plain cylinder drifts without live air; the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL lock or BSAI clamp-lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX25
- ✓ 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 SI32AX25 FAQ
Yes, the SI32AX25 is discontinued. The direct replacement is the SAI32AX25. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 25 mm stroke, output force, G1/8 port, and mounting interface.
This 32 mm bore double-acting cylinder features a G1/8 port. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical maximum force of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32AX25
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX25 replacement — usually within 7-8 hours.