This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX110S, 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.

The AirTAC Airtac SI160 Standard Cylinder SI160AX110S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 110mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX110S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160AX110S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore, 110mm stroke, and an SUS420J2 stainless steel piston rod. Delivering 10053 N push force at 0.5 MPa, it is replaced by the SAI160AX110S. This direct upgrade shares the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
The -S magnet supports CS1-B/DS1-B legacy sensors, while the SAI family uses current AirTAC switches. For high-heat environments, Viton H seals raise the operating range to 0-150 C.
| Model | Airtac SI160 Standard Cylinder SI160AX110S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX110S |
| Bore size | Ø160 mm |
| Stroke | 110 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 SAI160AX110S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160AX110S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×110 | 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).
Generates 14074 N at 0.7 MPa to secure large metal fabrications during machining or welding operations.
Moves substantial payloads along automated lines using the 30-500 mm/s speed range and 110mm stroke.
To replace this SI160AX110S, order the SAI160AX110S and verify your ISO 15552 mounting fixtures, bore, stroke, G3/4 port, and the -S magnet requirement. If you need load holding, note that a plain cylinder drifts on air loss as the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. To size both ways: dropping to a 125mm bore reduces force, while stepping up to 200mm increases it. At 0.5 MPa this 160mm bore yields 10053 N push and 9425 N pull. The -A rod specifies SUS420J2 stainless steel for corrosion resistance.
Replacement checklist
Yes, the SI160AX110S is discontinued. The direct replacement is the SAI160AX110S. It shares the same ISO 15552 mounting interface, 160mm bore, 110mm stroke, force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder has a G3/4 port. It delivers a push force of 10053 N and pull of 9425 N at 0.5 MPa, 14074 N at 0.7 MPa, 18095 N at 0.9 MPa, and a maximum theoretical force of 2050 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX110S replacement — usually within 7-8 hours.