This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X125N, 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 SI32X125N
The AirTAC SI32 Standard Air Cylinder SI32X125N 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 SAI32X125N, 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 → SAI32X125N
- 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 SI32X125N
The AirTAC SI32X125N is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 125 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. The direct replacement is the SAI32X125N, matching the interface, force and mounts. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This -N SKU uses NBR seals (-20 to +70 C), and because it lacks the -S magnet, it cannot accept a sensor.
The SAI family also introduces SAIL, SAIF and BSAI lock variants absent in the legacy SI line. Note that standard cylinders drift without live air; the cushion only decelerates at stroke end.
Airtac SI32 Standard Air Cylinder SI32X125N Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X125N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X125N |
| 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 SAI32X125N 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 SAI32X125N 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 SI32X125N
| 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 SI32X125N Is Used
Small Part Ejection
Uses the 402 N push force at 0.5 MPa to reliably push lightweight machined components out of a fixture.
Package Diverting
Actuates a diverting gate on a packaging line, safely handling the 20 kg vertical lift capacity.
Clamp Actuation
Secures small workpieces during secondary machining operations within the 125 mm travel range.
Replacing the Airtac SI32 Standard Air Cylinder SI32X125N with the SAI32X125N
To replace the SI32X125N, order the SAI32X125N. Verify the ISO 15552 mounting interface, 125 mm stroke, G1/8 port (PT/G/NPT) and accessory type (LB, FA, TC). Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. If you need to upsize, the 40 mm bore offers 628 N push at 0.5 MPa; downsizing is not recommended for this class. At 125 mm stroke, rod bending is minimal, but always guide external loads to prevent side-load wear. For load holding on air loss, add an external pilot check valve or rod lock, as the cushion only decelerates. The SAIL or BSAI lock variants provide integrated holding if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X125N
- ✓ 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 SI32X125N FAQ
Yes, the AirTAC SI32X125N is discontinued. The direct replacement is the SAI32X125N. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 125 mm stroke, G1/8 port and mounting interface.
This 32 mm bore cylinder uses a G1/8 port. It delivers 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X125N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X125N replacement — usually within 7-8 hours.