This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125AX60, 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 SI125 Standard Cylinder SI125AX60
The AirTAC SI125 Standard Cylinder SI125AX60 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 60mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125AX60, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125AX60
- 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 SI125 Standard Cylinder SI125AX60
The AirTAC SI125AX60 is a discontinued double-acting ISO 15552 profile cylinder with a 125 mm bore and 60 mm stroke. It delivers 6136 N push force at 0.5 MPa via a G1/2 port. The direct replacement is the SAI125AX60, sharing the same interface, force, and mounting.
This SKU features a SUS420J2 stainless steel rod (A option) but lacks a magnet, meaning it cannot accept CS1-B/DS1-B sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure. For load holding, note the cushion only decelerates; use an external rod lock or SAIL variant.
Airtac SI125 Standard Cylinder SI125AX60 Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125AX60 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125AX60 |
| Bore size | Ø125 mm |
| Stroke | 60 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI125AX60 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAI125AX60 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI125 Standard Cylinder SI125AX60
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SI125 Standard Cylinder SI125AX60 Is Used
Heavy Press Operations
Drives robust pressing and stamping fixtures requiring up to 6136 N of thrust at 0.5 MPa within a short 60 mm travel.
Pallet Stop Gates
Actuates heavy-duty pallet stops and diverter gates in high-throughput logistics conveyors where high force is necessary.
Industrial Clamp Arms
Secures large fabricated components during welding or machining, utilizing the SUS420J2 stainless rod for corrosion resistance.
Replacing the Airtac SI125 Standard Cylinder SI125AX60 with the SAI125AX60
To replace the discontinued SI125AX60, order the SAI125AX60. Confirm the ISO 15552 mounting interface, 60 mm stroke, G1/2 port, and M27x2 thread. Because this SKU has no magnet (-S), it cannot support position sensing; if needed, specify a magnet on the SAI. If less force is needed, an 80 mm bore provides 2513 N. For load holding on air loss, add a pilot check valve or explore the SAIL lock or BSAI clamp-lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125AX60
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI125 Standard Cylinder SI125AX60 FAQ
Yes, the AirTAC SI125AX60 is discontinued. The direct replacement is the SAI125AX60. It is dimensionally interchangeable per ISO 15552, retaining the same 125 mm bore, 60 mm stroke, 6136 N force, G1/2 port, and mounting fixtures.
This double-acting cylinder uses a G1/2 air port. At 0.5 MPa it provides 6136 N push and 5734 pull force. At 0.7 MPa push is 8590 N, and 11045 N at 0.9 MPa. The theoretical maximum force is 1251 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125AX60
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125AX60 replacement — usually within 7-8 hours.