This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125AX130, 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 SI125AX130
The AirTAC SI125 Standard Cylinder SI125AX130 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 130mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125AX130, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125AX130
- 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 SI125AX130
The AirTAC SI125AX130 is a discontinued double-acting ISO 15552 profile cylinder with a 125 mm bore and 130 mm stroke. It delivers 6136 N push force at 0.5 MPa and features a G1/2 port. The direct replacement is the SAI125AX130, sharing the same interface, force, and mounting. This specific SKU uses an SUS420J2 stainless steel rod (A suffix) for corrosion resistance, but lacks a magnet, meaning it cannot accept position switches.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For load holding, note that standard cylinders drift on air loss; the cushion only decelerates. Use the SAIL or BSAI lock variants if needed.
Airtac SI125 Standard Cylinder SI125AX130 Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125AX130 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125AX130 |
| Bore size | Ø125 mm |
| Stroke | 130 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 SAI125AX130 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 SAI125AX130 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 SI125AX130
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SI125AX130 Is Used
Heavy Stamping Press
Drives robust tooling in automated metal forming lines, utilizing the 6136 N thrust to actuate heavy dies and form thick gauge materials reliably.
Large Clamp Fixture
Secures oversized composite or steel components during machining, relying on the rigid 32 mm SUS420J2 stainless rod for corrosion resistance.
Replacing the Airtac SI125 Standard Cylinder SI125AX130 with the SAI125AX130
To replace the discontinued SI125AX130, order the SAI125AX130. Verify the ISO 15552 mounting interface, the 130 mm stroke, and the G1/2 port. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is required. The SUS420J2 stainless rod is retained. Sizing both ways: this bore yields 6136 N at 0.5 MPa, while a neighbouring 100 mm bore provides 3927 N. For load holding on air loss, add an external pilot check valve or choose the SAIL lock variant, as cushions only decelerate. Strokes under 300 mm minimize rod-bending side-load risks.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125AX130
- ✓ 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 SI125AX130 FAQ
Yes, the AirTAC SI125AX130 is discontinued. The direct replacement is the SAI125AX130. It is dimensionally interchangeable per ISO 15552, retaining the same 125 mm bore, 130 mm stroke, G1/2 port, and mounting interface, but features an upgraded two Y-shaped piston seal for longer life.
This double-acting cylinder has a G1/2 port. 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 force of 1251 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125AX130
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125AX130 replacement — usually within 7-8 hours.