This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X900S, 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 SID Series Double-Rod Cylinder SID160X900S 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 SAID160X900S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID160X900S is a double-acting, double-rod ISO 15552 cylinder featuring a 160mm bore and 900mm stroke. Because a rod exits both ends, push and pull forces are equal at 9425N @0.5MPa, 13194N @0.7MPa, and 16964N @0.9MPa. This model is discontinued; the direct replacement is the SAID160X900S. It shares the same G3/4 port, M36x2 rod thread, and 50mm adjustable cushion. The SAI upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
With a 900mm stroke, external guides are recommended to prevent rod bending under side loads. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
| Model | Airtac SID Series Double-Rod Cylinder SID160X900S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X900S |
| 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 SAID160X900S 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 SAID160X900S 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 two opposing tools simultaneously from one piston, utilizing the equal force on both rod ends for balanced machining or forming operations.
Moves heavy pallets along a conveyor without rotational drift, using the inherent stability of the double-rod construction to maintain precise alignment.
Lifts and lowers a 480kg payload vertically, using the rear rod to mount a sensor cam for mid-stroke positioning feedback.
To replace the discontinued SID160X900S, use the SAID160X900S directly—it matches the ISO 15552 mounting interface, bore, stroke, and equal-both-ways force. When sizing, verify that 9425N @0.5MPa is sufficient both ways; if not, step up to the 200mm bore. Choose a double-rod design when you need anti-rotation, a back rod for sensor cams, or to drive two tools. Reuse FA, LB, or TC mounts. The -S magnet works with legacy CS1-B/DS1-B switches. For this 900mm stroke, add external guides to handle side-load and rod-bending risks.
Replacement checklist
Yes, the SID160X900S is discontinued. The direct replacement is the SAID160X900S. It shares the same ISO 15552 interface, 160mm bore, 900mm stroke, G3/4 port, and mounting options, while adding an upgraded piston seal.
Force is equal both ways: 9425N @0.5MPa, 13194N @0.7MPa, and 16964N @0.9MPa. The air port is G3/4, the rod thread is M36x2, and it features 50mm adjustable cushions at each end. Speed range is 30-500mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID160X900S replacement — usually within 7-8 hours.