This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X100S, 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 SID200X100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 100mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X100S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID200X100S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston. 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. It features a 200mm bore, 40mm rod, M36x2 thread, 50mm adjustable cushion and a G3/4 port. The direct replacement is the SAID200X100S, sharing the same interface, stroke and mounting.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Because both rods share the same piston, the back rod can carry a sensor cam for -S magnet tracking via legacy CS1-B/DS1-B switches. 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 SID200X100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X100S |
| Bore size | Ø200 mm |
| Stroke | 100 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 SAID200X100S 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 SAID200X100S 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. |
| ×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 from one piston, utilising the equal both-ways force to deliver 15080 N @0.5 MPa cutting pressure on both faces.
The dual 40mm rods exiting both ends prevent rotation during heavy part diversion, maintaining precise alignment without external guides.
To replace the discontinued SID200X100S, install the SAID200X100S directly; it preserves the ISO 15552 mounting interface, 100mm stroke, G3/4 port and equal-both-ways force. Size both ways by checking neighbour bores if you need less force, ensuring the equal push/pull rating fits your load. A double rod is right when you need anti-rotation stability or must drive two tools from one piston. Reuse FA, LB or TC mounts. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. For this 100mm stroke side-load is minimal, but for any stroke >=300mm verify guide alignment to prevent binding.
Replacement checklist
Yes, the SID200X100S is discontinued. The direct replacement is the SAID200X100S, which matches the ISO 15552 interface, bore, stroke, G3/4 port and mounting hardware.
Force is equal both ways: 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. Speed is 30-500 mm/s. It operates at 0.15-1.0 MPa with a 50mm adjustable cushion at each end.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X100S replacement — usually within 7-8 hours.