This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX125S, 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 SI32AX125S
The AirTAC SI32 Standard Air Cylinder SI32AX125S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 125mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX125S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX125S
- 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 SI32AX125S
The AirTAC SI32AX125S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 125mm stroke. Featuring a SUS420J2 stainless steel rod and a built-in piston magnet for CS1-B/DS1-B switches, it delivers 402 N push force at 0.5 MPa via a G1/8 port. The direct replacement is the SAI32AX125S, matching the interface, bore, stroke, force, and mounting exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy SI line.
Airtac SI32 Standard Air Cylinder SI32AX125S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX125S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX125S |
| Bore size | Ø32 mm |
| Stroke | 125 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 SAI32AX125S 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 SAI32AX125S 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 SI32AX125S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SI32AX125S Is Used
Lightweight Material Sorting
The SUS420J2 stainless rod provides corrosion resistance for diverting small plastic or light metal parts in humid environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX125S with the SAI32AX125S
To replace the SI32AX125S, order the SAI32AX125S to retain the exact ISO 15552 mounting interface, 125mm stroke, G1/8 port, and M10x1.25 rod thread. Confirm your thread standard (PT/G/NPT) and mounting accessory (LB, FA, TC, etc.). The -S magnet enables CS1-B/DS1-B sensors, which use current AirTAC switches on the SAI. If sizing up, a 40mm bore yields 628 N push at 0.5 MPa; if downsizing, a 25mm bore is weaker. Remember, a plain cylinder drifts without live air—the cushion only decelerates—so use a pilot check valve or SAIL lock for load holding. At 125mm stroke, rod bending is low, but always guide external loads to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX125S
- ✓ 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 SI32AX125S FAQ
Yes, the AirTAC SI32AX125S is discontinued. The direct replacement is the SAI32AX125S. It is dimensionally interchangeable per ISO 15552, offering the same 32mm bore, 125mm stroke, force, G1/8 port, and mounting interface.
The 32mm bore delivers 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 theoretical max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX125S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX125S replacement — usually within 7-8 hours.