This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X230CA, 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 SI125X230CA
The AirTAC SI125 Standard Cylinder SI125X230CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 230mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X230CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke230 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X230CA
- 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 SI125X230CA
The AirTAC SI125X230CA is a discontinued double-acting ISO 15552 profile cylinder with a 125mm bore, 230mm stroke, and a CA clevis mount. Delivering 6136 N push force at 0.5 MPa, it is replaced directly by the SAI125X230CA. This direct successor shares the exact ISO 15552 mounting interface, G1/2 port, and output force, fitting existing fixtures seamlessly.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this non-magnet SKU cannot take a sensor. If load holding is required, the cushion only decelerates; explore the SAIL or BSAI lock variants or external pilot check valves.
Airtac SI125 Standard Cylinder SI125X230CA Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X230CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X230CA |
| Bore size | Ø125 mm |
| Stroke | 230 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 SAI125X230CA 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 SAI125X230CA 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 SI125X230CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×230 | 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 SI125X230CA Is Used
Heavy Press Clamping
Ideal for securing large metal castings or heavy plates in hydraulic press setups, utilizing the 6136 N push force at 0.5 MPa to hold workpieces firmly during machining operations.
Injection Mould Eject
Provides the high-force ejection stroke required to free dense plastic or aluminium moulded parts from tooling, benefiting from the 40mm adjustable air cushions to protect the 230mm stroke end.
Replacing the Airtac SI125 Standard Cylinder SI125X230CA with the SAI125X230CA
To replace the SI125X230CA, order the SAI125X230CA. Confirm the CA clevis mount, G1/2 port, and 230mm stroke match your fixture. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. At 0.5 MPa the 125mm bore yields 6136 N push and 5734 N pull. If undersizing, a 100mm bore gives 3927 N push; if oversizing, a 160mm bore provides 10053 N push. The cushion only decelerates the load; for dead-load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Since the 230mm stroke is under 300mm, severe rod-bending side loads are less critical, but always guide the load to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X230CA
- ✓ 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 SI125X230CA FAQ
Yes, the SI125X230CA is discontinued. The direct replacement is the SAI125X230CA. It is a true ISO 15552 profile cylinder that maintains the same 125mm bore, 230mm stroke, CA clevis mounting interface, G1/2 port, and output force, dropping directly into existing machinery.
The 125mm bore features a G1/2 air port and M27x2 rod thread. Force output is 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, with 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 SAI125X230CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X230CA replacement — usually within 7-8 hours.