This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X125S, 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 SI32X125S
The AirTAC SI32 Standard Air Cylinder SI32X125S 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 SAI32X125S, 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 → SAI32X125S
- 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 SI32X125S
The AirTAC SI32X125S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 125mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the direct replacement SAI32X125S. This upgrade keeps the exact interface, force, and mounting but uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure.
Because this SKU includes the -S magnet, it supports legacy CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Note that a plain cylinder drifts on air loss; cushions only decelerate. For load holding, use an external rod lock, pilot check valve, or SAIL/BSAI variant. Rod material options include carbon steel, SUS420J2, or SUS304.
Airtac SI32 Standard Air Cylinder SI32X125S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X125S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X125S |
| 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 SAI32X125S 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 SAI32X125S 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 SI32X125S
| 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 SI32X125S Is Used
Package Diverting
Sort or divert small cartons on a conveyor line where a 125mm stroke and 20kg vertical lift capacity provide precise handling.
Clamp Actuation
Secures thin workpieces during light assembly or gluing, using the 402N push force at 0.5MPa for reliable positioning.
Replacing the Airtac SI32 Standard Air Cylinder SI32X125S with the SAI32X125S
To replace the SI32X125S, order the SAI32X125S. Confirm the ISO 15552 mounting interface, 32mm bore, 125mm stroke, G1/8 port (PT/G/NPT thread options), and mounting accessory (LB, FA, TC, etc.). The -S suffix means a magnet is present for switching. If sizing alternatives, the neighboring 40mm bore yields 628N push at 0.5MPa, while dropping to a 25mm stroke reduces rod extension. For this 125mm stroke, ensure guide alignment to prevent rod bending and side-load wear. Remember, a standard cylinder does not hold load without live air; the cushion only decelerates. For secure holding, consider an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant with a built-in valve is also available for 32mm bores.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X125S
- ✓ 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 SI32X125S FAQ
Yes, the SI32X125S is discontinued. The direct replacement is the AirTAC SAI32X125S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 125mm stroke, G1/8 port, and mounting interface, but features an upgraded piston seal for longer life.
The 32mm bore features a G1/8 port and M10x1.25 rod thread. Force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, with a theoretical max of 82kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X125S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X125S replacement — usually within 7-8 hours.