This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X60SCA, 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 SI125X60SCA
The AirTAC SI125 Standard Cylinder SI125X60SCA 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 SAI125X60SCA, 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 → SAI125X60SCA
- 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 SI125X60SCA
The AirTAC SI125X60SCA is a discontinued double-acting ISO 15552 profile cylinder featuring a 125 mm bore, 60 mm stroke, and a CA clevis mount. Delivering 6136 N push force at 0.5 MPa, it is replaced by the SAI125X60SCA. This direct successor shares the exact ISO 15552 mounting interface, G1/2 port, and output force, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Beyond the standard line, the SAI family adds SAIL, SAIF, and BSAI variants the SI lacked. The -S magnet works with legacy CS1-B/DS1-B sensors, while rod options include SUS420J2 or SUS304.
Airtac SI125 Standard Cylinder SI125X60SCA Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X60SCA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X60SCA |
| 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 SAI125X60SCA 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 SAI125X60SCA 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 SI125X60SCA
| 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 SI125X60SCA Is Used
Heavy-Duty Pressing
Drives large stamping and riveting fixtures requiring up to 11045 N of thrust at 0.9 MPa.
Automated Clamping
Secures heavy structural components during machining using the robust 125 mm bore profile.
Material Forming
Provides steady downward pressure for bending or forming thick metal plates in fabrication lines.
Replacing the Airtac SI125 Standard Cylinder SI125X60SCA with the SAI125X60SCA
To replace the SI125X60SCA, order the SAI125X60SCA. Confirm the ISO 15552 CA clevis interface, 125 mm bore, 60 mm stroke, G1/2 port (PT/G/NPT thread), and the -S magnet for CS1-B/DS1-B switches. If sizing up or down, neighboring bores are 100 mm (3927 N push @0.5 MPa) and 160 mm (10053 N push @0.5 MPa). Note that a plain cylinder drifts on air loss; the 40 mm adjustable air cushion only decelerates the load. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 32 mm rod and M27x2 thread remain unchanged.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X60SCA
- ✓ 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 SI125X60SCA FAQ
Yes, the SI125X60SCA is discontinued. The direct replacement is the SAI125X60SCA. It is dimensionally interchangeable per ISO 15552, retaining the same 125 mm bore, 60 mm stroke, CA clevis mount, and G1/2 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 max is 1251 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X60SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X60SCA replacement — usually within 7-8 hours.