This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X700, 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 SID63X700 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X700, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID63X700 is a double-acting, double-rod ISO 15552 cylinder with a 63 mm bore and 700 mm stroke. Because a rod exits both ends, the effective piston area is identical in each direction, yielding equal force both ways: 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at 0.9 MPa. This model is discontinued; the direct replacement is the SAID63X700, which retains the G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
A double-rod design prevents rod rotation and lets the back rod drive a second tool or sensor cam. For this SKU, the absence of a -S magnet means it cannot carry a reed switch. Note that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variants.
| Model | Airtac SID Series Double-Rod Cylinder SID63X700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X700 |
| Bore size | Ø63 mm |
| Stroke | 700 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 SAID63X700 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 SAID63X700 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. |
| ×700 | 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 conveyor pusher where the return stroke must deliver the same 1402 N force as the advance, keeping cycle timing symmetric.
Uses the rod exiting the rear end to carry a secondary sensor cam, triggering an external gauge without adding a separate actuator.
Lifts a 71 kg vertical payload in a storage gantry, relying on the twin rods to prevent platform twist without external linear bearings.
To replace the discontinued SID63X700, install the direct replacement SAID63X700, matching the ISO 15552 mounting interface, 700 mm stroke, and G3/8 port. Size both directions by the equal force: if 1962 N at 0.7 MPa is insufficient, step up to an 80 mm bore, or drop to a 50 mm bore if 1154 N suffices. A double rod is right when you need anti-rotation, equal push/pull, or a back-end sensor cam. Reuse FA, LB, or TC mounts. For the 700 mm stroke, add external guides to prevent rod bending under side loads. This SKU lacks the -S magnet, so sensing is impossible.
Replacement checklist
Yes, the SID63X700 is discontinued. The direct replacement is the SAID63X700, which shares the identical ISO 15552 mounting interface, 700 mm stroke, G3/8 port, and equal both-ways force.
Because it is a double-rod cylinder, force is equal both ways: 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at 0.9 MPa. The bore is 63 mm, the air port is G3/8, and the rod thread is M16x1.5.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X700 replacement — usually within 7-8 hours.