The AirTAC Airtac SCD Standard Cylinder SCD63X150 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, 150mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD63X150 is a double-acting, double-rod pneumatic cylinder that outputs identical thrust in both directions because the 20 mm rod passes through both end caps. At 0.5 MPa it provides 1402 N each way, rising to 2523 N at the maximum operating pressure of 0.9 MPa, making actuation fully symmetric for fixtures that need balanced force.
With a 150 mm stroke, this 63 mm bore model uses PT1/4 ports and an M16x1.5 knuckle thread on each rod end. The body length A(SCD) is 210 mm, and the adjustable air cushion at each end is 28 mm long to decelerate the piston smoothly. It is a genuine AirTAC tie-rod cylinder built for dual-sided tooling tasks.
| Model | Airtac SCD Standard Cylinder SCD63X150 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 150 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. |
| ×150 | 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 through-rod lets you mount identical grippers or vacuum cups on both ends, so the cylinder can shuttle parts between two parallel conveyors with the same stroke and force in each direction.
With a rod supported by bearings in both end caps, the SCD63X150 resists twisting better than a single-rod cylinder, making it suitable for pushing components into a press without adding an external anti-rotate guide.
Attach a sensor flag or cam to the rear rod extension to trigger limit switches or CMSG reed sensors, confirming full retraction without needing to access the front tooling area.
Choose the SCD63 when your application needs around 1400 N of balanced force at standard plant pressure. If you can accept slightly less thrust, the SCD50 delivers 825 N at 0.5 MPa and may fit a tighter envelope. For higher force, the SCD80 provides 2268 N at the same pressure. This double-rod design is the right pick when you must mount a tool, stopper, or sensor flag on the rear rod; if you only need push force from one end, the single-rod SC63 is a simpler, shorter alternative.
For a direct replacement, match the 63 mm bore, 150 mm stroke, PT port thread, and basic mounting style. If your existing unit has a magnet or a specific bracket, add the corresponding suffix (-S for magnet, -LB, -FA, or -TC for mounting). At this 150 mm stroke, rod deflection is minimal under axial loads, but any significant side force requires an external guide rail, not just the through-rod guidance.
Double-rod checklist
Because the 20 mm rod extends through both ends, the effective piston area is identical on both sides. The force is 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at 0.9 MPa for both the extend and retract strokes.
Pick the SCD63 when you need equal force and speed in both directions, or when you want to use the rear rod to mount a secondary tool, a mechanical stop, or a position-sensing flag. If you only need a strong push stroke and the pull stroke is just for return, the single-rod SC63 is usually more compact and cost-effective.
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