This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X125STC, 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 SI32X125STC
The AirTAC SI32 Standard Air Cylinder SI32X125STC 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 SAI32X125STC, 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 → SAI32X125STC
- 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 SI32X125STC
The AirTAC SI32X125STC 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 directly replaced by the SAI32X125STC. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, port and TC trunnion accessory.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces lock and valve variants (SAIL, SAIF, BSAI) absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32X125STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X125STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X125STC |
| 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 SAI32X125STC 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 SAI32X125STC 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 SI32X125STC
| 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 SI32X125STC Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of an automated fixture using 402N of thrust at 0.5MPa.
Clamp Actuation
Provides reliable 125mm travel to actuate secondary clamps on a machining station without consuming excessive space.
Gate Diversion
Deploys a 32mm bore diverter gate to route small parts on a packaging line, cycling safely within the 30-800mm/s speed range.
Replacing the Airtac SI32 Standard Air Cylinder SI32X125STC with the SAI32X125STC
To replace the SI32X125STC, order the SAI32X125STC. Confirm the ISO 15552 interface, 32mm bore, 125mm stroke, G1/8 port (PT/G/NPT thread options), TC trunnion mounting, and the -S magnet for CS1-B/DS1-B switches. The SAI uses current AirTAC switches. Sizing both ways: a neighbouring 40mm bore offers 628N push at 0.5MPa, while dropping to a lower pressure yields less force. Note that a plain cylinder does not hold load on air loss; the 27mm adjustable cushion only decelerates. For held loads, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 125mm stroke, rod-bending side loads are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X125STC
- ✓ 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 SI32X125STC FAQ
Yes, the SI32X125STC is discontinued. The direct replacement is the SAI32X125STC. It shares the same ISO 15552 mounting interface, 32mm bore, 125mm stroke, output force, G1/8 port and TC trunnion mount, fitting existing fixtures perfectly.
This 32mm bore double-acting cylinder features a G1/8 air port and a 12mm rod. 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 SAI32X125STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X125STC replacement — usually within 7-8 hours.