This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X125H, 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 SI32X125H
The AirTAC SI32 Standard Air Cylinder SI32X125H 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 SAI32X125H, 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 → SAI32X125H
- 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 SI32X125H
The AirTAC SI32X125H is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 125mm stroke. Built for high-temperature duty with a Viton H seal (0-150 C), it delivers 402N push at 0.5MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X125H, a direct upgrade retaining the exact ISO 15552 mounting interface, M10x1.25 rod thread, and 27mm cushions.
The SAI replacement features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. Note that this specific SKU lacks a magnet and cannot accept position sensors.
Airtac SI32 Standard Air Cylinder SI32X125H Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X125H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X125H |
| 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 SAI32X125H 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 SAI32X125H 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 SI32X125H
| 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 SI32X125H Is Used
Hot End Ejection
Ideal for ejecting small parts near heat sources, leveraging the Viton H seal to maintain integrity up to 150 C without deformation.
Compact Clamping
Provides 402N of push force at 0.5MPa for securing light workpieces in tight machining fixtures where ISO 15552 mounting is required.
Transfer Diverting
Drives small diverter arms on packaging lines, offering a 125mm stroke and 30-800mm/s speed for rapid product sorting.
Replacing the Airtac SI32 Standard Air Cylinder SI32X125H with the SAI32X125H
To replace the SI32X125H, order the SAI32X125H to guarantee the same ISO 15552 interface, 125mm stroke, G1/8 port, and mounting accessories. Confirm your thread standard (PT/G/NPT) and high-temperature Viton H seal requirement. Because this SKU lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, specify a magnet on the SAI order. For sizing, the 32mm bore yields 402N push at 0.5MPa; if more force is needed, the neighbouring 40mm bore provides 628N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for suspended loads use an external pilot check valve or the SAIL/BSAI lock variants. At 125mm stroke, rod bending is minimal, but always guide the load to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X125H
- ✓ 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 SI32X125H FAQ
Yes, the SI32X125H is discontinued. The direct replacement is the SAI32X125H. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 125mm stroke, 402N force, G1/8 port, and mounting interface.
The 32mm bore features a G1/8 air port and M10x1.25 rod thread. It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X125H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X125H replacement — usually within 7-8 hours.