The AirTAC Airtac SCD Standard Cylinder SCD63X80STC is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø63mm bore, 80mm stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCD63X80STC is a double-acting, double-rod pneumatic cylinder delivering perfectly symmetrical force in both directions. With a 63 mm bore and 80 mm stroke, it provides a consistent 1402 N of thrust at 0.5 MPa, whether extending or retracting, thanks to its through-rod design that equalises the effective piston area.
This model comes configured with a built-in magnet for direct mounting of CMSG, DMSG, or EMSG sensors, and a centre trunnion (TC) mount that includes the TCM1 bracket, allowing the cylinder to pivot for swinging loads. The 20 mm diameter rod protrudes from both ends, offering robust guidance and the ability to mount tooling or flags on the rear side.
| Model | Airtac SCD Standard Cylinder SCD63X80STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 80 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The centre trunnion mount allows the cylinder to pivot smoothly, making it perfect for actuating swinging transfer gates or diverters on conveyors where equal force is needed in both directions.
The built-in magnet enables easy attachment of reed or solid-state sensors along the barrel, while the rear rod can carry a separate flag or cam for end-of-stroke detection on the back side.
With a rod extending from both ends, this cylinder can drive two independent clamping arms or tooling plates simultaneously, ensuring perfectly synchronised and equal force application.
The SCD63X80STC is a direct replacement for any AirTAC SCD63X80 with a centre trunnion and magnet. Ensure the replacement matches the bore, stroke, PT thread, and mounting style. The TC mount, supplied with the TCM1 bracket, is designed for applications where the cylinder body needs to swing. If your load requires rigid linear guidance without pivot, consider the basic or LB foot mount versions.
Double-rod checklist
The force is identical in both directions because it's a double-rod cylinder. At 0.5 MPa, it provides 1402 N of force. At the maximum operating pressure of 0.9 MPa, the force increases to 2523 N.
Yes, the 'S' in the model code SCD63X80STC indicates it has a built-in magnet. This allows you to mount AirTAC's CMSG, DMSG, or EMSG series sensors directly onto the cylinder's tie-rod to detect piston position.
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