This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X120SH, 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 SI160 Standard Cylinder SI160X120SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X120SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X120SH is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 120 mm stroke. It delivers a push force of 10053 N at 0.5 MPa via a G3/4 port. The direct replacement is the SAI160X120SH, matching the bore, stroke, force, port, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the -H Viton seal extends operating temperature to 0-150 C.
| Model | Airtac SI160 Standard Cylinder SI160X120SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X120SH |
| Bore size | Ø160 mm |
| Stroke | 120 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 SAI160X120SH 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 SAI160X120SH 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. |
| ×120 | 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).
Drives large forming presses and heavy-duty industrial machinery requiring up to 10053 N of thrust at 0.5 MPa operating pressure.
Lifts substantial material loads with a safe working capacity near 6032 N, ideal for automated pallet handling and heavy transfer lines.
Secures components in hot environments up to 150 C using the Viton H seal option while maintaining a rigid ISO 15552 mounting interface.
To replace the SI160X120SH, order the SAI160X120SH. Confirm the ISO 15552 mounting interface, 120 mm stroke, G3/4 port, and your -S magnet and -H high-temp Viton seal options. The 160 mm bore yields 10053 N push at 0.5 MPa; if less force is needed, the 125 mm bore provides 6136 N, or the 200 mm bore gives 15708 N for heavier demands. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Although 120 mm is under 300 mm, always verify guide alignment to prevent rod bending on heavy loads.
Replacement checklist
Yes, the SI160X120SH is discontinued. The direct replacement is the SAI160X120SH. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 120 mm stroke, output force, G3/4 port, and mounting accessories.
The 160 mm bore provides a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa it pushes 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa, with an operating speed of 30-500 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X120SH replacement — usually within 7-8 hours.