This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X800, 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 SI160X800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 800mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X800, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X800 is a discontinued double-acting ISO 15552 profile cylinder with an 800 mm stroke and a 160 mm bore, delivering 10053 N push force at 0.5 MPa. It features a Ø40 mm rod, M36x2 thread, and a G3/4 air port. AirTAC replaced this legacy unit with the SAI160X800, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade utilizes a new piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet and cannot accept position sensors. If you need load holding on air loss, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
| Model | Airtac SI160 Standard Cylinder SI160X800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X800 |
| Bore size | Ø160 mm |
| Stroke | 800 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 SAI160X800 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 SAI160X800 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. |
| ×800 | 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 up to 14074 N of push force at 0.7 MPa to form thick metal plates in automotive lines.
Pushes heavy fabricated components across wide conveyor belts using the 800 mm stroke without requiring intermediate stops.
To replace the discontinued SI160X800, order the SAI160X800 keeping the identical 160 mm bore, 800 mm stroke, G3/4 port, and ISO 15552 mounting interface. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, select an SAI model with the magnet option. When sizing, neighboring bores offer different forces: the 125 mm bore provides 6136 N push at 0.5 MPa, while the 200 mm bore provides 15708 N. For load holding without live air, a plain cylinder drifts; use an external pilot check valve or the SAIL/BSAI lock variants. Finally, at 800 mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
Yes, the SI160X800 is discontinued. The direct replacement is the SAI160X800. It shares the identical ISO 15552 mounting interface, 160 mm bore, 800 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
This 160 mm bore double-acting cylinder features a G3/4 air port. It delivers 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 theoretical maximum of 2050 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X800 replacement — usually within 7-8 hours.