This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X460, 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 SI125X460
The AirTAC SI125 Standard Cylinder SI125X460 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 460mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X460, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke460 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X460
- 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 SI125X460
The AirTAC SI125X460 is a discontinued double-acting ISO 15552 profile cylinder with a 125 mm bore and 460 mm stroke. Delivering 6136 N push force at 0.5 MPa, it features a 32 mm rod, M27x2 thread, G1/2 port, and 40 mm adjustable cushions. The direct replacement is the SAI125X460, sharing the same ISO 15552 mounting interface, output, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot take a sensor. The SAI family also adds SAIL lock and BSAI clamp variants absent in the SI line.
Airtac SI125 Standard Cylinder SI125X460 Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X460 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X460 |
| Bore size | Ø125 mm |
| Stroke | 460 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 SAI125X460 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 SAI125X460 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 SI125X460
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×460 | 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 SI125X460 Is Used
Heavy Stamping Press
Drives large dies and heavy platens in metal forming, utilizing the 6136 N push force to shape thick steel blanks reliably.
Pallet Handling Gate
Actuates robust 460 mm stroke diverter gates in high-throughput distribution centers to route loaded pallets.
Injection Mold Eject
Provides the long 460 mm extraction stroke needed to push large molded plastic parts safely out of heavy industrial tooling.
Replacing the Airtac SI125 Standard Cylinder SI125X460 with the SAI125X460
To replace the SI125X460, order the SAI125X460. Verify your ISO 15552 mounting accessories (LB, FA, CA, TC), the G1/2 port, and the 460 mm stroke. Because this is a non-magnet SKU, it cannot support CS1-B/DS1-B sensors; if sensing is needed, specify an SAI with a magnet. The 460 mm stroke creates a risk of rod bending under side loads—use external guides to prevent premature seal wear. If sizing down, a 100 mm bore yields 3927 N at 0.5 MPa; sizing up to 160 mm provides 10053 N. For load holding on air loss, note that cushions only decelerate; add an external pilot check valve or choose the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X460
- ✓ 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 SI125X460 FAQ
Yes, the SI125X460 is discontinued. The direct replacement is the SAI125X460. It is dimensionally interchangeable per ISO 15552, matching the 125 mm bore, 460 mm stroke, 6136 N force, and G1/2 port, so it fits existing fixtures directly.
At 0.5 MPa it provides 6136 N push and 5734 pull force. At 0.7 MPa push is 8590 N, and at 0.9 MPa it is 11045 N. The theoretical max is 1251 kgf at 1.0 MPa, with an operating speed of 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X460
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X460 replacement — usually within 7-8 hours.