This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X125, 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 SI32X125
The AirTAC SI32 Standard Air Cylinder SI32X125 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 SAI32X125, 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 → SAI32X125
- 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 SI32X125
The AirTAC SI32X125 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 125mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32X125, which shares identical mounting, bore, stroke, force, and port dimensions. This SKU lacks a magnet (-S) and therefore cannot accept position sensors like the legacy CS1-B or DS1-B.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. If high-temperature operation is needed, Viton H seals raise the range to 150C.
Airtac SI32 Standard Air Cylinder SI32X125 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X125 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X125 |
| 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 SAI32X125 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 SAI32X125 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 SI32X125
| 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 SI32X125 Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture.
Package Diverting
Actuates a short 125mm stroke diverter arm to route small boxes on a secondary packaging line.
Clamp Actuation
Secures low-mass workpieces during light assembly, taking advantage of the compact 32mm profile barrel.
Replacing the Airtac SI32 Standard Air Cylinder SI32X125 with the SAI32X125
To replace the SI32X125, order the SAI32X125. Confirm your ISO 15552 mounting interface (LB, FA, TC, etc.), the G1/8 port thread (PT, G, or NPT), and the M10x1.25 rod-end thread. Because this specific SKU has no magnet, you cannot mount sensors; if position detection is required, order the SAI32X125S variant instead. Sizing both ways: the 32mm bore yields 402N push at 0.5MPa, while a 40mm neighbour bore provides 628N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL lock variant for suspended loads. At 125mm stroke, side-load and rod-bending risks are low, but ensure proper guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X125
- ✓ 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 SI32X125 FAQ
Yes, the SI32X125 is discontinued. The direct replacement is the SAI32X125. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 125mm stroke, G1/8 port, and mounting interface, so it fits existing fixtures perfectly.
The 32mm bore uses 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 force of 82kgf at 1.0MPa.
Request a Quote for the SAI32X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X125 replacement — usually within 7-8 hours.