This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X200S, 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 SID100X200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X200S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID100X200S is a 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, making push and pull force equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The bore is 100 mm, the piston rod is Ø25 mm, and the air port is G1/2. This SID model is discontinued and end-of-life; the direct replacement is the SAID100X200S, which shares the same ISO 15552 interface, bore, stroke, force, port, and mounting.
The SAI replacement uses an upgraded piston seal featuring two Y-shaped one-way elements for long life and low start-up pressure. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAI replacement uses current AirTAC switches). A plain cylinder does not hold its load on air loss or when a valve is centered; the piston drifts, and the adjustable 36 mm air cushion only decelerates near stroke end. For a held load, use an external rod lock, a pilot-operated check valve, or the SAIL/BSAI lock variant.
| Model | Airtac SID Series Double-Rod Cylinder SID100X200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X200S |
| Bore size | Ø100 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID100X200S 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAID100X200S 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). |
|---|---|
| 100 | Bore size in mm. |
| ×200 | 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 a transfer carriage where the return stroke must match the forward stroke force exactly, preventing part slip during bidirectional indexing.
The second rod end drives a secondary tool or fixture, allowing one cylinder to alternate between two operations without extra valves.
Lifts loads vertically where the equal push/pull force prevents sagging on the return stroke, keeping the lift platform perfectly balanced.
To replace the discontinued SID100X200S, install the direct replacement SAID100X200S, matching the 100 mm bore, 200 mm stroke, G1/2 port, M20x1.5 rod thread, and ISO 15552 mounting. Size both ways by confirming the equal force requirement (3681 N @0.5 MPa) and checking neighbor bores if you need more or less power. A double rod is right when you need equal push/pull force, anti-rotation stability, or a back rod to carry a sensor cam. Reuse basic, FA, LB, or TC mounts. The -S magnet supports sensors. For this 200 mm stroke, side-load is minimal, but for strokes >=300 mm, ensure guide alignment to prevent binding.
Replacement checklist
Yes, the SID100X200S is discontinued. The direct replacement is the SAID100X200S. It shares the same ISO 15552 interface, 100 mm bore, 200 mm stroke, G1/2 port, and mounting, but adds an upgraded piston seal.
Force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. Speed is 30-800 mm/s. It uses a G1/2 port and a Ø25 mm rod.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X200S replacement — usually within 7-8 hours.