This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X200S, 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 SID63X200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X200S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID63X200S is a 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 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The bore is 63 mm, the rod is Ø20 mm with an M16x1.5 thread, the air port is G3/8, and adjustable air cushions are 30 mm at each end. This SID model is discontinued; the direct replacement is the SAID63X200S, sharing the same interface, stroke, and mounting.
The double-rod design prevents rotation and lets the back rod carry a sensor cam or drive a second tool simultaneously. The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix means 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 or SAIL/BSAI variant for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID63X200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X200S |
| Bore size | Ø63 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID63X200S 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAID63X200S 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). |
|---|---|
| 63 | 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 two opposing machining heads simultaneously using both extending rods, ensuring perfectly synchronized cutting cycles with equal push and pull force.
The primary rod pushes parts down a conveyor while the rear rod actuates a mechanical cam or limit switch, eliminating the need for external position sensors.
To replace the discontinued SID63X200S, specify the SAID63X200S; it is a direct swap retaining the ISO 15552 mounting interface, 63 mm bore, 200 mm stroke, G3/8 port, and equal both-ways force. Size both directions by checking the equal force against your load; if 1402 N @0.5 MPa is insufficient, step up to the 80 mm bore, or drop to 50 mm if lower force is acceptable. A double rod is right when you need anti-rotation, a back-side sensor cam, or dual-tool driving. Mounting options include Basic, FA, LB, and TC. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches (the SAI uses current switches). For this 200 mm stroke, side-load is minimal, but for strokes >=300 mm ensure guide alignment to prevent rod binding.
Replacement checklist
Yes, the SID63X200S is discontinued. The direct replacement is the SAID63X200S. It shares the same ISO 15552 mounting interface, 63 mm bore, 200 mm stroke, G3/8 port, and equal both-ways force. The SAI family also adds upgraded piston seals and SAIL/BSAI lock variants.
Because it is a double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The air port is G3/8. Air cushions are 30 mm at each end.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X200S replacement — usually within 7-8 hours.