The AirTAC Airtac SCD Standard Cylinder SCD50X60S 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. Ø50mm bore, 60mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD50X60S delivers balanced 825 N of force in both directions at 0.5 MPa, thanks to its double-rod design that removes the rod area from both sides of the piston. With a 60 mm stroke and a 20 mm diameter rod protruding from each end, it is ideal for compact fixtures where you need to mount tooling or a sensor flag on the rear rod.
This model includes a built-in magnet, allowing you to clamp CMSG, DMSG, or EMSG sensors directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length is 207 mm, and the adjustable air cushion at each end decelerates the piston smoothly, making it a durable choice for repetitive, two-sided actuation tasks.
| Model | Airtac SCD Standard Cylinder SCD50X60S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 60 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, 21 mm |
| Max stroke | Up to 1200 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 | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 168 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). |
|---|---|
| 50 | Bore size in mm. |
| ×60 | 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 rod extending from both ends allows a single cylinder to push a component into place while simultaneously retracting a locking pin on the opposite side, synchronizing two actions with one pneumatic circuit.
With the built-in magnet, a sensor can be mounted on the rear rod's path to confirm full retraction, keeping the front tooling area clear and simplifying cable routing in tight automation cells.
The dual-rod connection at the piston provides inherent anti-rotation, making this cylinder suitable for pushing parts onto a fixture where rod twist would cause misalignment, without needing an external guide for light loads.
Choose the SCD50 when you need the equal push/pull output of 825 N at 0.5 MPa. If your application requires more force, stepping up to the SCD63 provides 1402 N under the same pressure. For less force, the SCD40 delivers 528 N. This double-rod cylinder is the right pick over a single-rod SC when you need a rear rod extension for a secondary operation, but if your load applies a significant side force, a guided cylinder is necessary, as the through-rod provides guidance but is not a full side-load bearing.
To replace an existing SCD50X60S, match the 50 mm bore, 60 mm stroke, PT port thread, basic mounting, and the -S magnet option. For strokes of 300 mm or longer, always evaluate the unsupported rod length for buckling and consider an external guide to protect the rod bearings.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 825 N, at 0.7 MPa it outputs 1154 N, and at the maximum operating pressure of 0.9 MPa it reaches 1484 N in both directions.
Choose the SCD when you need a rear rod to perform work, such as mounting a cam, a sensor flag, or a secondary tool. It also provides better guidance and symmetric bearing loading than a single-rod cylinder, which is useful for maintaining alignment, though it is not a replacement for a fully guided cylinder under high side loads.
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