This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X60, 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 SI125X60
The AirTAC SI125 Standard Cylinder SI125X60 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 SAI125X60, 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 → SAI125X60
- 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 SI125X60
The AirTAC SI125X60 is a discontinued double-acting ISO 15552 profile cylinder with a 125 mm bore and 60 mm stroke, delivering 6136 N push force at 0.5 MPa. AirTAC replaced it with the SAI125X60 direct: identical bore, stroke, output, G1/2 port and mounting fixtures. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life.
This non-magnetic SKU cannot take a sensor, unlike the -S version which supports CS1-B/DS1-B switches. The SAI family also introduces SAIL, SAIF and BSAI lock variants absent in the SI line.
Airtac SI125 Standard Cylinder SI125X60 Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X60 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X60 |
| 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 SAI125X60 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 SAI125X60 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 SI125X60
| 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 SI125X60 Is Used
Heavy Pressing
Applies 6136 N at 0.5 MPa for seating heavy components and bearings in automated assembly lines.
Clamping Jigs
Secures large workpieces during machining, utilizing the 32 mm rod and M27x2 thread for rigid holding.
Replacing the Airtac SI125 Standard Cylinder SI125X60 with the SAI125X60
To replace this SI125X60, order the SAI125X60. Confirm the ISO 15552 mounting interface (foot, flange, clevis or trunnion), the G1/2 port thread (PT, G or NPT) and the 60 mm stroke. Because this specific SKU lacks the -S magnet, it cannot accept position sensors; if sensing is required, select the SAI125X60S equivalent and use current AirTAC switches. For force context, the 125 mm bore yields 6136 N push at 0.5 MPa; dropping to a 100 mm bore reduces push to 3927 N, while a 160 mm bore increases it to 10053 N. Note that a standard cylinder drifts on air loss—the cushion only decelerates near stroke end—so for load holding consider an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X60
- ✓ 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 SI125X60 FAQ
Yes, the AirTAC SI125X60 is discontinued. The direct replacement is the SAI125X60. It is dimensionally interchangeable per ISO 15552, matching the 125 mm bore, 60 mm stroke, force, G1/2 port and mounting interface, but features an upgraded piston seal for longer life.
The 125 mm bore features a G1/2 air port and a 32 mm rod. It delivers 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X60
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X60 replacement — usually within 7-8 hours.