This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X160S, 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 SID200X160S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 160mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X160S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID200X160S is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This configuration means both faces use the rod-side area, so push and pull force are equal at 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. The direct replacement is the SAID200X160S, sharing the same 200mm bore, 160mm stroke, G3/4 port, and ISO 15552 mounting interface. The SAI replacement also uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The dual-rod design prevents piston rotation and allows the back rod to drive a second tool or carry a sensor cam. The bore dictates a 40mm rod, M36x2 thread, and 50mm adjustable cushions. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID200X160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X160S |
| Bore size | Ø200 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 SAID200X160S 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAID200X160S 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). |
|---|---|
| 200 | 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 opposing machining heads simultaneously from one piston, utilizing the equal both-ways force to ensure balanced material removal on both sides of a heavy workpiece.
Lifts and indexes a heavy conveyor diversion gate without twisting, relying on the rigid dual-rod architecture to maintain precise alignment during high-speed package sorting.
Executes a heavy-duty pressing operation while the extended rear rod actuates an external linear position sensor, providing closed-loop feedback for precision depth control.
To replace the discontinued SID200X160S, specify the SAID200X160S, which matches the 200mm bore, 160mm stroke, G3/4 port, and ISO 15552 mounting footprint without mechanical changes. Because force is equal both ways, verify your push and pull requirements against the 15080 N @0.5 MPa baseline; if downsizing, check the 160mm bore (9425 N @0.5 MPa) or 125mm bore (5734 N @0.5 MPa) for adequate capacity. A double-rod cylinder is the right choice when you need anti-rotation stability, want to drive two tools from one piston, or need a rear rod for a sensor cam. Reuse existing FA, LB, or TC mounts. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; the SAI replacement uses current AirTAC switches. For this 160mm stroke, side-load is minimal, but for any stroke >=300mm, ensure guide rails to prevent rod binding.
Replacement checklist
Yes, the SID200X160S is discontinued. The direct replacement is the SAID200X160S. It shares the same ISO 15552 interface, 200mm bore, 160mm stroke, G3/4 port, and mounting dimensions, while adding an upgraded piston seal. You can swap it directly without changing your machine layout.
As a double-rod cylinder, force is equal both ways: 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. It features a 40mm rod, M36x2 thread, G3/4 port, 50mm adjustable cushions, and operates at 0.15-1.0 MPa with a speed of 30-500 mm/s. The cushion only decelerates near stroke end; it does not hold loads on air loss.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X160S replacement — usually within 7-8 hours.