This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X100S, 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 SID100X100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X100S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID100X100S 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. It features a 100mm bore, G1/2 air port, M20x1.5 rod-end thread, and 36mm adjustable air cushions at each end. This SID model is discontinued; the direct replacement is the SAID100X100S, sharing the same ISO 15552 interface, bore, stroke, force, and mounting.
The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for long life and low start-up pressure. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI line lacked. A double-rod design prevents rod rotation and lets the back rod carry a sensor cam or drive a second tool. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder does not hold loads on air loss; cushions only decelerate, so use an external rod lock for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID100X100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X100S |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAID100X100S 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 SAID100X100S 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. |
| ×100 | 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 5153 N force @0.7 MPa, ensuring perfectly balanced material removal without rod rotation.
Transfers workpieces across a conveyor using both rod ends, maintaining equal push and pull kinetics for stable 3681 N @0.5 MPa actuation.
To replace the discontinued SID100X100S, use the direct replacement SAID100X100S, which matches the ISO 15552 mounting interface, G1/2 port, and 100mm bore. Size both ways by checking equal force at neighbouring bores: the 80mm bore yields 2268 N @0.5 MPa, and the 125mm yields 5734 N @0.5 MPa. A double rod is right when you need anti-rotation, a back-rod sensor cam, or dual-tool driving. Mounting options include Basic, FA, LB, and TC. The -S magnet supports legacy CS1-B/DS1-B sensors. For this 100mm stroke, side-load is minimal, but for strokes >=300mm, ensure guide alignment to prevent binding.
Replacement checklist
Yes, the SID100X100S is discontinued. The direct replacement is the SAID100X100S. It shares the same ISO 15552 interface, 100mm bore, 100mm stroke, G1/2 port, and equal both-ways force. The SAI family also features an upgraded piston seal and adds SAIL, SAIF, and BSAI lock variants.
Because it is a double-rod cylinder, force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The air port is G1/2, the rod is Ø25mm with an M20x1.5 thread, and it has 36mm adjustable cushions.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X100S replacement — usually within 7-8 hours.