This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X900N, 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 SI160X900N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 900mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X900N, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X900N is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 900 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and NBR seals (-N) for -20 to +70 C operation. Because this SKU lacks a magnet, it cannot accept a position sensor.
AirTAC replaced this legacy unit with the SAI160X900N, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force, and port. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure.
| Model | Airtac SI160 Standard Cylinder SI160X900N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X900N |
| Bore size | Ø160 mm |
| Stroke | 900 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 SAI160X900N 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 SAI160X900N 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. |
| ×900 | 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 stamping dies requiring high thrust, using the 10053 N push force at 0.5 MPa to form thick plate metal reliably.
Swings large diverter arms on aggregate conveyors, needing the 900 mm stroke and robust 160 mm bore to move heavy material flows.
To replace the SI160X900N, order the SAI160X900N. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC) and the G3/4 port match your fixture. This non-magnet SKU cannot take a switch; if you need sensing, select an SAI model with an S suffix for current AirTAC switches. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 900 mm stroke, prevent rod bending by guiding the load externally. Neighbouring bores: 125 mm yields 6136 N [email protected], while 200 mm yields 15708 N.
Replacement checklist
Yes, the SI160X900N is discontinued. The direct replacement is the SAI160X900N. It shares the identical ISO 15552 mounting interface, 160 mm bore, 900 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
At 0.5 MPa, push is 10053 N and pull is 9425 N. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical max is 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s, the port is G3/4, and the cushion stroke is 50 mm.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X900N replacement — usually within 7-8 hours.