This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X125FA, 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 SI160 Standard Cylinder SI160X125FA
The AirTAC Airtac SI160 Standard Cylinder SI160X125FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 125mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X125FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X125FA
- 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 SI160 Standard Cylinder SI160X125FA
The AirTAC SI160X125FA is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 125 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a 40 mm rod, M36x2 thread, and a G3/4 port. AirTAC replaced this EOL unit with the SAI160X125FA, a direct sharing the exact FA flange mounting, output, and dimensions.
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 (-S) and cannot take a sensor. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI160 Standard Cylinder SI160X125FA Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X125FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X125FA |
| Bore size | Ø160 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160X125FA carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X125FA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X125FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×125 | 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 SI160 Standard Cylinder SI160X125FA Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 10053 N of push force at 0.5 MPa with stable FA flange mounting.
Pallet Lowering
Lowers heavy pallets or materials up to 512 kg safely, using adjustable 50 mm air cushions to decelerate at stroke end.
Mold Actuation
Actuates large injection molds or clamping fixtures where the 160 mm bore and M36x2 rod thread handle high axial loads.
Replacing the Airtac SI160 Standard Cylinder SI160X125FA with the SAI160X125FA
To replace the SI160X125FA, order the SAI160X125FA. It drops into existing fixtures via the ISO 15552 interface and FA flange. Confirm the G3/4 port and 125 mm stroke. Because this specific SKU has no -S magnet, it cannot support CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. Sizing both ways: a 200 mm bore offers more thrust, while a 125 mm bore provides 6136 N [email protected]. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. At 125 mm stroke, side-load risk is low, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X125FA
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X125FA FAQ
Yes, the SI160X125FA is discontinued. The direct replacement is the SAI160X125FA. It shares the identical ISO 15552 mounting interface, 160 mm bore, 125 mm stroke, G3/4 port, and FA flange, fitting existing fixtures perfectly while adding an upgraded piston seal.
This double-acting cylinder has a G3/4 port. The force ratings are: 10053 N push and 9425 N pull at 0.5 MPa; 14074 N push at 0.7 MPa; 18095 N push at 0.9 MPa; and a theoretical maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X125FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X125FA replacement — usually within 7-8 hours.