This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X175FA, 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 SI160X175FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 175mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X175FA, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X175FA is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 175 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port and M36x2 rod thread. AirTAC replaced this legacy unit with the SAI160X175FA, a direct upgrade retaining the exact FA flange mounting interface, output force, and 50 mm adjustable air cushions.
Because this SKU lacks the -S magnet, it cannot accept position sensors. The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure. For load holding, note that standard cylinders drift without live air; consider the SAIL lock or BSAI clamp-lock variants.
| Model | Airtac SI160 Standard Cylinder SI160X175FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X175FA |
| Bore size | Ø160 mm |
| Stroke | 175 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 SAI160X175FA 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 SAI160X175FA 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. |
| ×175 | 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 of thrust at 0.7 MPa to secure large metal castings or heavy plates during machining and press operations.
Moves substantial injection mold halves or heavy stamping dies with smooth 50 mm adjustable air cushions at both ends.
To replace the SI160X175FA, order the SAI160X175FA. Confirm the ISO 15552 FA flange interface, 160 mm bore, 175 mm stroke, G3/4 port, and M36x2 thread. Since this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors. If you need position feedback, select an SAI model with a magnet. For sizing, the 160 mm bore yields 10053 N push at 0.5 MPa; dropping to a 125 mm bore reduces push to 6136 N, while a 200 mm bore increases it to 15708 N. A plain cylinder does not hold load on air loss—the cushion only decelerates. For secure holding, use the SAIL or BSAI lock variants, or an external pilot check valve. Although 175 mm is under 300 mm, always verify guide alignment to prevent rod bending on heavy fixtures.
Replacement checklist
Yes, the SI160X175FA is discontinued. The direct replacement is the SAI160X175FA. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 175 mm stroke, FA flange, and G3/4 port.
This double-acting cylinder operates at 30-500 mm/s. It outputs 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 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 SAI160X175FA replacement — usually within 7-8 hours.