This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X80S, 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 SID63X80S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X80S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID63X80S is a discontinued ISO 15552 double-acting double-rod cylinder featuring a 63mm bore and 80mm stroke. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal (1402N at 0.5MPa, 1962N at 0.7MPa, 2523N at 0.9MPa). The direct replacement is the SAID63X80S, sharing the same G3/8 port, M16x1.5 rod thread, and 30mm adjustable cushions.
The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; they do not hold loads on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID63X80S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X80S |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAID63X80S 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 SAID63X80S 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. |
| ×80 | 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 1402N force at 0.5MPa, ensuring balanced material removal without requiring two separate single-rod actuators.
Uses the twin-rod architecture to prevent mechanical twist during rapid 30-800mm/s part diversion on a packaging line, maintaining precise alignment without external guides.
Extends a physical stop from both end faces to catch and center pallets securely, leveraging the equal both-ways force to halt loads up to 71kg safely.
To replace the discontinued SID63X80S, specify the SAID63X80S which drops directly into the existing ISO 15552 mounting interface without dimensional changes. Size both ways by verifying the equal push/pull force against your requirements; if 1402N at 0.5MPa is insufficient, step up to the 80mm bore, or drop to 50mm if lower force is acceptable. Choose a double-rod configuration when you need anti-rotation stability or need to drive two tools simultaneously. Reuse existing FA, LB, or TC mounts. The -S magnet enables position sensing. For this 80mm stroke side-load is minimal, but for any stroke >=300mm ensure guide alignment to prevent rod binding.
Replacement checklist
Yes, the SID63X80S is discontinued. The direct replacement is the SAID63X80S. It shares the same ISO 15552 interface, 63mm bore, 80mm stroke, G3/8 port, and mounting options, but features an upgraded two Y-shaped one-way piston seal for longer life.
Because it is a double-rod cylinder, force is equal both ways and uses the rod-side area: 1402N at 0.5MPa, 1962N at 0.7MPa, and 2523N at 0.9MPa. The air port size is fixed at G3/8 by the 63mm bore. It operates at 0.15-1.0MPa with a speed range of 30-800mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID63X80S replacement — usually within 7-8 hours.