This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X160SH, 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 SI160X160SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 160mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X160SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X160SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 160 mm stroke. It delivers 10053 N push force at 0.5 MPa and includes a high-temperature Viton H seal rated for 0 to 150 C. The direct replacement is the SAI160X160SH, sharing the same G3/4 port, M36x2 rod thread, and ISO 15552 mounting interface.
Upgrading to the SAI160X160SH retains all ratings while adding an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The SAI family also introduces SAIL and BSAI lock variants absent from the legacy SI line.
| Model | Airtac SI160 Standard Cylinder SI160X160SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X160SH |
| Bore size | Ø160 mm |
| Stroke | 160 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 SAI160X160SH 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 SAI160X160SH 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. |
| ×160 | 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 presses and stamping dies requiring 10053 N of push force at 0.5 MPa with stable high-temperature operation.
Actuates heavy welding fixtures where the 160 mm stroke and robust M36x2 rod secure large structural panels.
Moves cast components in hot environments up to 150 C using the Viton H seal for reliable high-temp performance.
To replace the SI160X160SH, order the SAI160X160SH, confirming the ISO 15552 mounting interface, 160 mm stroke, G3/4 port, and the high-temp Viton H seal. The built-in magnet (-S) supports legacy CS1-B/DS1-B sensors, though the SAI replacement uses current AirTAC switches. If downsizing, a 125 mm bore yields 6136 N push at 0.5 MPa; if upsizing, a 200 mm bore provides 15708 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI160X160SH is discontinued. The direct replacement is the SAI160X160SH. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 160 mm stroke, force, G3/4 port, and mounting fixtures.
It features a G3/4 port and delivers 10053 N push and 9425 N pull at 0.5 MPa. At 0.7 MPa push is 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X160SH replacement — usually within 7-8 hours.