This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X1130S, 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 SI125X1130S
The AirTAC SI125 Standard Cylinder SI125X1130S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 1130mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X1130S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke1130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X1130S
- 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 SI125X1130S
The AirTAC SI125X1130S is a discontinued double-acting ISO 15552 profile cylinder with a 125mm bore and 1130mm stroke. It delivers 6136N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI125X1130S, matching the interface, force, and stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The SAI family adds SAIL and BSAI lock variants the SI lacked. This -S model uses CS1-B/DS1-B sensors.
Airtac SI125 Standard Cylinder SI125X1130S Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X1130S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X1130S |
| Bore size | Ø125 mm |
| Stroke | 1130 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 SAI125X1130S 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 SAI125X1130S 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 SI125X1130S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×1130 | 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 SI125X1130S Is Used
Heavy Press Ejection
Provides the robust 6136N push force needed to eject dense stamped metal parts from heavy press dies over a long 1130mm extraction distance.
Pallet Discharge
Handles the long 1130mm reach required to push loaded pallets completely off a conveyor roller bed using steady 0.5MPa thrust.
Large Mold Handling
Shifts substantial injection molds along extended machine beds, utilizing the 32mm rod and M27x2 thread for secure heavy fixture linkage.
Replacing the Airtac SI125 Standard Cylinder SI125X1130S with the SAI125X1130S
To replace the SI125X1130S, order the SAI125X1130S direct, confirming the ISO 15552 interface, 125mm bore, 1130mm stroke, G1/2 port, and -S magnet. It operates at 30-500 mm/s. For sizing, the neighbouring 100mm bore yields 3927N push at 0.5MPa, while the 160mm bore yields 10053N. At 1130mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss; for load holding, use an external rod lock or pilot check valve, or specify an SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X1130S
- ✓ 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 SI125X1130S FAQ
Yes, the SI125X1130S is discontinued. The direct replacement is the SAI125X1130S. It is dimensionally interchangeable per ISO 15552, retaining the same 125mm bore, 1130mm stroke, G1/2 port, and mounting fixtures.
It features a G1/2 air port. Force outputs are 6136N push and 5734N pull at 0.5MPa, 8590N push at 0.7MPa, 11045N push at 0.9MPa, and a theoretical max of 1251 kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X1130S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X1130S replacement — usually within 7-8 hours.