This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X1060S, 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 SI125X1060S
The AirTAC SI125 Standard Cylinder SI125X1060S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 1060mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X1060S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke1060 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X1060S
- 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 SI125X1060S
The AirTAC SI125X1060S is a discontinued double-acting ISO 15552 profile cylinder with a 125 mm bore and 1060 mm stroke. It delivers 6136 N push force at 0.5 MPa. The direct replacement is the SAI125X1060S, matching the exact bore, stroke, G1/2 port, and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL and BSAI lock variants absent in the SI line. The -S suffix means it has a piston magnet for CS1-B/DS1-B sensors.
Airtac SI125 Standard Cylinder SI125X1060S Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X1060S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X1060S |
| Bore size | Ø125 mm |
| Stroke | 1060 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 SAI125X1060S 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 SAI125X1060S 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 SI125X1060S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×1060 | 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 SI125X1060S Is Used
Heavy Press Actuation
Drives large platens and press fixtures where 6136 N of thrust at 0.5 MPa is required for forming or stamping operations.
Pallet Lift Stations
Lifts loaded pallets vertically; the 1060 mm stroke provides the elevation needed for multi-tier conveyor transfer systems.
Long-Stroke Diversion
Actuates heavy-duty routing gates over extended distances, utilizing the full 1060 mm travel to reposition large products.
Replacing the Airtac SI125 Standard Cylinder SI125X1060S with the SAI125X1060S
To replace this SI cylinder, order the SAI125X1060S. Confirm the ISO 15552 mounting interface, the 1060 mm stroke, the G1/2 port (PT/G/NPT), and your mounting accessory. Because this is a 1060 mm stroke, use external guides to prevent rod bending and side-load damage. If sizing down, a 100 mm bore gives 3927 N push at 0.5 MPa; sizing up to 160 mm yields 10053 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use the SAIL lock or a pilot check valve to hold loads. The -S magnet works with legacy CS1-B/DS1-B switches; the SAI uses current AirTAC switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X1060S
- ✓ 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 SI125X1060S FAQ
Yes, the SI125X1060S is discontinued. The direct replacement is the SAI125X1060S. It is dimensionally interchangeable per ISO 15552, retaining the same 125 mm bore, 1060 mm stroke, output force, G1/2 port, and mounting interface.
It has a G1/2 air port. The force ratings are: 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, 11045 N push at 0.9 MPa, and a theoretical maximum of 1251 kgf at 1.0 MPa. The operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X1060S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X1060S replacement — usually within 7-8 hours.