The AirTAC Airtac SCD Standard Cylinder SCD63X100STC 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, 100mm stroke, PT1/4 ports and adjustable end cushioning.
This SCD63X100STC double-rod pneumatic cylinder provides perfectly balanced 1402 N of force in both directions at 0.5 MPa, thanks to its through-rod design that subtracts the same 20 mm rod area from each side. With a 100 mm stroke and a body length A of 210 mm, it fits compact dual-action stations where the rear rod can carry a sensor flag or secondary tooling.
The centre trunnion (TC) mount, supplied with the TCM1 bracket (F-SC63TC), allows the cylinder to pivot freely, making it ideal for swinging transfer arms. A built-in magnet lets you clip on CMSG or DMSG reed sensors directly to the barrel for end-of-stroke detection without extra brackets, keeping your setup clean and fast to commission.
| Model | Airtac SCD Standard Cylinder SCD63X100STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 100 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. |
| ×100 | 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.
Mount a pressing tool on the front rod and a stripper plate on the rear rod. Both rods extend and retract in perfect sync with equal 2523 N of force at 0.9 MPa, simplifying complex assembly sequences.
The TC centre trunnion mount lets the entire cylinder body swing as it pushes a pallet or component between two conveyor lanes. The rear rod can trigger a DMSG sensor at the home position.
With a 20 mm rod protruding from both end caps and supported by two bearings, this cylinder resists rod rotation better than a single-rod type. Use it to push components without adding an external anti-rotate guide.
Choose the SCD63 bore when your application needs roughly 1400 N of balanced force per direction at standard plant pressure. If you can work with less force, the SCD50 delivers 825 N at 0.5 MPa and has a shorter 207 mm body. For heavier loads, the SCD80 steps up to 2268 N. Because this is a double-rod cylinder, both ends move with identical thrust and speed, unlike a single-rod SC where the pull stroke is weaker.
This model is a direct replacement for another AirTAC SCD63X100 that matches the PT port thread, centre trunnion mounting, and built-in magnet. If your load creates significant side forces, remember that the through-rod improves guidance but does not replace a dedicated guided cylinder or external linear rail for long-term bearing life.
Double-rod checklist
Because the piston rod passes through both ends, the effective pressure area is identical for both directions. The force is 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at the maximum operating pressure of 0.9 MPa. At the theoretical 1.0 MPa, it reaches 286 kgf.
Choose the SCD when you need equal force and speed in both directions, or when you want to use the rear rod extension for mounting a sensor cam, a mechanical stop, or secondary tooling. The through-rod also provides better support against side loads than a single-rod cylinder, though it is not a full guided solution.
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