This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X800, 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 SID100X800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X800, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID100X800 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This 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 port is G1/2, and the rod thread is M20x1.5. This SID model is discontinued; the direct replacement is the SAID100X800, sharing the same interface, bore, stroke, and mounting.
The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. A double-rod design prevents rod rotation and can drive two tools simultaneously. This non-magnetic SKU cannot take a sensor. A plain cylinder does not hold loads on air loss; the 36 mm cushions only decelerate. For held loads, use an external rod lock or SAIL/BSAI variant.
| Model | Airtac SID Series Double-Rod Cylinder SID100X800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X800 |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAID100X800 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 SAID100X800 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. |
| ×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 two opposing machining heads simultaneously with equal push and pull force, ensuring balanced cutting loads without requiring a second cylinder.
Uses the dual-rod architecture to prevent mechanical rotation during long 800mm transfers, maintaining precise alignment of heavy workpieces.
To replace the discontinued SID100X800, swap it directly for the SAID100X800, reusing the existing ISO 15552 mounting hardware (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both ways by checking the equal force ratings against your load, or step to neighbour bores (80mm or 125mm) if margins require. Choose a double-rod cylinder when you need anti-rotation, a back rod for a sensor cam, or to drive two tools. Select the -S magnet option if you need sensing, as this base SKU lacks it. For the 800mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
Yes, the SID100X800 is discontinued. The direct replacement is the SAID100X800. It shares the same ISO 15552 interface, 100mm bore, 800mm stroke, G1/2 port, and equal both-ways force, while adding an upgraded piston seal.
The G1/2 ported 100mm bore provides equal push and pull force of 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. Speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X800 replacement — usually within 7-8 hours.